5 of the Largest and Strongest Cranes

5 of the Largest and Strongest Cranes

5 of the Largest and Strongest Cranes

There are so many types of cranes and crane equipment, which we’ve covered on the blog before—But which types of cranes are the biggest and strongest? Don’t worry, Hercules SLR is here to help.

Read on to discover what some of the mightiest cranes are and what they can do.

1. LTM 11200-9.1

LTM 11200-9.1 crane

Designed by Liebherr, located in Switzerland, the mobile crane, LTM 11200-9.1, is the strongest telescopic mobile crane in the market and offers the world’s longest telescopic boom. It has a maximum lift capacity of 1,200-tons, a maximum hoisting height of 188 meters (616 feet) and a maximum radius of 136 meters (446 feet) – This is over the length of a football field! 

Some of the features found on the LTM 11200-9.1 are:

  • 100m long telescopic boom and 22m telescopic boom extension.
  • Lifting capacity of 65-tons at the 100m long, suspended telescopic boom.
  • 126m long luffing fly jib.
  • 60.5m long fixed jib, optionally hydraulically adjustable.
  • Fast and easy crane assembly with little required space.
  • Active, speed dependent rear-axle steering (all axles can be steered).
  • Economical transportation.

The LTM 11200-9.1 has been used to assemble larger portal cranes, radio towers, absorber columns, and wind power generators. When fully-loaded the base of the vehicle drives with slewing platforms, luffing cylinder and all four folding beams—With all of these elements, it will weigh in at over 100-tons. However, dismantling these elements is easy to do, making it so you only have to travel with what will be used on the job. Doing this can lessen the total weight to 34-tons, making it much more economical to transport.

2. PTC 200 DS PTC 200 DS crane

The PTC 200 DS is owned and operated by a company called Mammoet, located in the Netherlands. This crane is nearly 205 meters (675 feet) tall, has an attachment that can lift 3,500 tons at it’s max capacity and is so large that in order to weigh it down, 35 shipping containers (each 40 feet long) filled with sand are used as counterweights.

This heavy-lift crane has a maximum lift height of 140 meters (459 feet) and a radius of over 136 meters (446 feet). The PTC200 DS can handle a 2,000-ton load at a radius of up to 78 meters with 3,500 tonnes of ballast and 117 meters (383 feet) of boom—Or 58 (190 feet) meters radius on a 140-meter boom. It recently went through an upgrade that allows the crane to lift a 2,000-ton structure in one piece as opposed to lifting it in multiple sections.

The PTC 200 DS heavy-lift crane is used around the world mostly on large refinery and petrochemical projects. The crane was even used to construct the Dubai Observation Wheel, which is the world’s tallest Ferris wheel towering at nearly 213 meters (700 feet) tall. Other than this project, the crane has spent the majority of its life in the United States, South America and here in Canada!

3. The Asian Hercules IIIasian hercules lll 3 crane

The Asian Hercules is one of the world’s largest floating cranes, weighing in at a whopping 16,805-tons. The complete vessel features accommodations for 45 people! With a lifting capacity of 5,000-tons and a maximum lifting height of 120 meters (393 feet), this floating giant is designed for heavy lifting operations offshore.

The Asian Hercules III was constructed in 2015, registered in Singapore and has an ‘ABS A1, + AMS – Heavy Lift Vessel’ classification crane. Among its features, this crane operates with the following winches:

  • 2 cargo winches capable of pulling 20 tons at 10m/min.
  • 2 class anchor winches for handling the 6,975kg HHP bow anchor with a 76 mm grade 3 anchor chain.
  • 2 luffing winches providing a maximum luffing speed of 1.00m/min at full load.
  • 4 main hoisting winches for the A-frame, and 2 for the Jib, each capable of hoisting speeds of 2m/min at full load and 5m/min a light or no load.
  • 2 Jib adjustments winches, mounted on the A-frame, for adjustment of the job without load from 00 to 400 with respect to the A-frame.
  • 2 aux hoisting winches for the A-frame and 1 unit for the Jib, each capable of hoisting speeds of 10m/min at full load of 20 tons.

What’s the Jib? A jib or jib arm is the horizontal or near-horizontal beam used in many types of crane to support the load clear of the main support.

The construction of this mega-crane, designed by Gunnebo, is the culmination of more than 250-years of technical know-how. Designing the vessel required a 5000-ton modular block system with a spreader beam, luffing blocks, and sheaves. After two years of design and construction, the Asian Hercules III is a flexible lifting solution with interchangeable parts that can be customized for different lifting configurations.

4. SGC – 250 sgc-250 crane

The SGC – 250, the Sarens Giant Crane also known as ‘Big Carl’, is a 250,000t/m heavy crane designed to accommodate the heavy lifting requirements for refinery, oil and gas, mining, offshore platform, and third-generation components for nuclear power plants.

Built in 2015, this crane has a maximum lift capacity of 5,000-tons and features a 118m – 160.5m main boom configuration with a 40.5m – 99.5 m heavy-duty jib configuration. It operates on a 48.5m outer ring and requires a 5,200-ton counterweight. The jib can be extended up to 100 meters, giving it a maximum height of 250 meters (820 feet) and radius 275 meters (902 feet).

The SGC – 250 can operate on two different blocks at the same time—One on the main boom and one on the jib. The crane’s main hook block weighs 105 tonnes and has a safe working load (SWL) of 3,200 tonnes while the jib hook weighs 58 tonnes and has an SWL of 1,600 tonnes.

After it’s unveiling the SGC – 250 was transported to the UK where it was used on the Hinkley Point C nuclear power station construction project. Over the course of that project, the SGC lifted more than 600 pieces of pre-fabricated components.

5. SK10,000

SK10,000

Finishing up our list we have a crane that hasn’t yet hit the scene, but when it does, it will take the spot of the world’s largest land-based crane. The SK10,000, created by ALE, is set to be completed by Q4 of 2020.

As floating production storage and offloading (FPSO) units and floating liquefied natural gas (FLNG) units grow in popularity, larger cranes like the SK10,000 become necessary. Often times, modules of these ships are constructed elsewhere and then transferred to the shipyard for assembly. The SK10,000 will allow modules to be installed directly onto the ship’s hulls, advancing current capabilities in terms of both maximum weight lifted and impact on these project’s efficiency.

The SK10,000 will deliver unparalleled lifting capacity as well as a number of other features such as:

  • Jib outreach of up to 200m (655ft).
  • Ground bearing pressure below 25te/m2.
  • A winch hoisting system with various hook blocks to maximize lift capacity and hoisting speed.
  • A small plot area—The design will eliminate the need to install a full ring or crane track unless specifically required for the project, which will reduce the space needed to operate by 45%. This will be ideal for busy shipyards or areas with restricted access like oil refineries or petrochemical plants.
  • Reduced on-site disruption—The large lifting radius will allow the crane to be fully rigged and operated off-plot with less groud preparation needed.
  • Simplified logistics and assembly—ALE‘s specialists will be able to assemble the crane in a matter of weeks using standard plant and a crawler crane.

What’s a crawler crane? A crawler crane has its boom mounted on an undercarriage fitted with a set of crawler tracks that provide both stability and mobility. Crawler cranes range in lifting capacity from 40 to 3,500 short tons.


Hercules SLR offers crane certifications & LEEA-certified inspections, repairs, predictive & preventive maintenance and crane parts & accessories like wire rope slings, hoists & whatever else you need to lift.

When you spend a long day lifting, hoisting and pulling, your body probably has some aches & pains. Did you know your crane is no different? Just like a weightlifter must take care of their body, watch what they eat and even ensure the palms of their hands are prepared to lift, your crane needs a similar level of care. (And, we know what happens when this level of care is overlooked).

Click here to discover what type of cranes Hercules SLR services, the equipment & products we service, sell & inspect and why looking after your crane benefits you in the long-run.


NEED A QUOTE? HAVE A QUESTION? CALL US—WE KNOW THE (WIRE) ROPES & EVERYTHING RIGGING-RELATED.

Product Spotlight: What is Aircraft Cable?

aircraft cable blog header

Product Spotlight: What is Aircraft Cable?

Obviously cables are used in an aircraft, right? Easy—Done!

Well, yes, that’s technically correct…But wait, there’s more!

You would assume aircraft cable is a type of wire rope used throughout an aircraft, for everything from adjustable seat back controls to controlling the movement of the wing flaps and landing gear on planes with analog flight systems. These cables are essentially specialized high strength wire rope, made to withstand the special environmental circumstances found on an aircraft such as harsh temperatures and moisture. Aircraft cable is also known as galvanized wire rope, and is often made from carbon steel and is drawn galvanized. Galvanizing protects the cable from corrosion for a period of time, but will discolor to a white or dull appearance—Prolonged exposure to the elements will eventually cause corrosion, which is why it’s always important to keep your aircraft cable up to date with inspections.

So, what is wire rope?

A piece of wire rope has three main components. Individual wires that make up each strand, the strand itself and finally, the core it’s built around. The core is typically composed of fibre core (FC) or steel wire core, called independent wire rope core (IWRC). The steel core increases strength by 7% and the weight by 10%, which provides more support to the outer strands than fibre cores. Steel cores resist crushing and are more resistant to heat.

The design factor of wire rope tells you the ratio between minimum breaking load of the rope and the working load limit (WLL).

Manufactures, like Hercules SLR, stock aircraft cable to commercial and military specifications in stainless steel, galvanized carbon steel, and a variety of other alloys. If you’re curious, the most common aircraft cable diameters are 1/16 through 5/32 with 7×7 or 7×19 construction. Normal breaking strength varies—Here at Hercules SLR we carry aircraft cable from a normal breaking strength of 480lbs to 14,400lbs.

 

However, aircraft cable isn’t just used on airplanes! It’s typically used in more strenuous applications because of its ability to withstand harsh temperatures and corrosion, but can serve effective in a variety of personal, commercial, industrial and military purposes.

Some examples of uses for aircraft cable NOT found within an aircraft, are:

  • Securing Cargo: Aircraft cable can be used to tie down heavy cargo on ships. Aircraft cable can be particularly useful because as mentioned above, it is resistant to extreme temperatures and moisture.
  • Boats and Docking: Aircraft cable is used for several applications in boats and docking like securing boats, hoisting them out of the water, sailboat rigging and on fishing boats.
  • Pulleys and Winches: The strength of aircraft cable makes it the perfect choice for lifting and hoisting.
  • Stage Rigging: Once again because of it’s strength and durability it is often the cable of choice for the rigging that opens, closes, and lifts heavy curtains, moves backdrops, raises and lowers lighting and so on.
  • Zip Lines: Both galvanized and stainless steel are used for zip lines, depending on the weather conditions in the location of the zip line.
  • Garage Doors: Aircraft cable can be found in garage door raising/lowering mechanisms.
  • Exercise Equipment: Aircraft cable is often used in a variety of exercise equipment, most commonly in weight machines.

Inspecting Aircraft Cable

Aircraft cables, both on and off airplanes, often live in fairly harsh environments—It’s often the wire rope of choice in those circumstances. As well, on some aircraft’s, the cable remains in one static position around pulley bends for extended periods of time. You should always ensure ALL of your rigging gear is inspected on it’s recommended timeline—But it’s especially important when you know the equipment is being exposed to harsh environments.

At every inspection, all control cables must be inspected for broken wires strands—This includes sections of the cable that may be hidden behind or within part of the aircraft structure. One of the easiest ways to do this is to run a cotton cloth over the length of the wire, checking for any places where the material get’s snagged. Any cable that has a single broken wire strand located around critical fatigue areas (where the cable runs around a pulley, sleeve or through a fair-lead; or any section where the cable is flexed, rubbed, or worked) must be replaced. Generally, SOME broken wires in non-critical areas are okay, but always consult your service/maintenance manual.

You’ll also want to look out for any flat spots, any areas where the cable twist is unraveling, or any other condition resulting in the cable being distorted—If any of these things are present, you must replace the cable.

It is recommended to remove the cable from critical areas and flex them to ensure that all cables on the inside of the wire rope haven’t worn down due to environmental deterioration, distortion or fatigue. This is definitely recommended if you haven’t been keeping up with regular inspections. There is a chance that the cable could look completely sound from the outside, but as soon as you remove it from the position it has remained in for so long, it will completely fail.


Need aircraft cable? Need an inspection? We’ve got you covered!

With a full service, one-stop-shop for rigging companies with all the service, inspections and repairs that any company would need, we can top the rest! Our goal is to make it look like you don’t need us! From advice, help with design, problem solutions, through to seamless procurement and excellent customer service, we are here to support your business and move it forward—Whatever it is, we can help.


NEED A QUOTE? HAVE A QUESTION? CALL US—WE KNOW THE (WIRE) ROPES & EVERYTHING RIGGING-RELATED.

Get to Know your Regional Sales Manager, Steve Hanes

rigger next to giant wire rope spool

Get to Know your Regional Sales Manager, Steve Hanes

Tell us about your educational/professional background:

I worked my way through school and was learning to become a computer technician and programmer. With some help from the economy and getting married, my path has taken me to sales.

Can you tell us about your work experience before joining Hercules SLR?

For over 19 years, I worked in the automotive industry—I started in the wash bay at a car dealership, worked my way up to Service Advisor, then Assistant Service Manager. I spent eight years as a Service Manager for Honda, Toyota and Saturn dealerships. After this, I spent three years as General Manager in aftermarket sales for import cars.

This was the stepping stone to learn outside sales, and how to operate in more than location. In 2006 I was hired by Unalloy IWRC and became a Technical Sales Representative, and this was when I finally became part of this great, ever-changing industry! 

Why did you decide to work for Hercules SLR? 

Hercules SLR presented me with an opportunity to move from Sales Manager at another branch to become Branch Manager at the newly-opened Hamilton, Ontario branch.

With responsibilities in both Operations and Sales, this was an excellent opportunity to grow in the rigging & lifting industry. 

Where have you traveled during your time at Hercules SLR, and where did you enjoy traveling to most?

With Hercules SLR, I’ve had various roles in our Ontario locations—Brampton, Hamilton, Sarnia and Sudbury, and several times to Dartmouth, Nova Scotia for meetings & training, which was the first time I’ve been to the East Coast.    

Is there anywhere that you would like to travel to in the future with Hercules SLR?

I hope to eventually visit all the branches and cities Hercules SLR has coast-to-coast! 

What’s something you’re most proud to have accomplished in your career at Hercules SLR?

Hercules SLR has helped me grow my career in operations, sales and travel. 

Did I mention when I was hired over 12 years ago as a Technical Sales Advisor, and had no technical experience in this industry? I had the drive to learn, train and ask for help, and now I’m confident in my title. 

Hercules SLR has also let me coach and lead other staff, which is so personally rewarding. I’m still learning to be the person I want to be at work, and most importantly, at home. 

What do you enjoy most about the securing, lifting and rigging industry?

I’ve been asked this several times and since I moved industries, what I’ve learned is it’s not about selling from a catalog or taking orders, it’s about making orders.

We have a sign that says ‘Value Added Service’ and it’s not just a poster on the wall. I’ve worked in the steel mill, marine, towers, quarries, forestry, windmills, assembly plants, mobile/tower cranes, construction sites, and they all need to move something, whether it’s building materials, furniture or parts.    

One thing I’ve enjoyed over the years is the customers and relationships I’ve built—They’re some of the most solid I can imagine. I’ve even kept in contact with some after they’ve retired! #notjustasalesguy. 

Give us some advice for people who work, or want to work in an industrial environment:

This industry has something for everyone, at every level, from work in the shop to manufacturing slings that move & lift the world, to inside sales, outside sales, rigger, inspector, trainer and operations. I could go on, but if someone wants to be a part of a team to help and partner with every other industry. 

Don’t miss out on rigging expertise at Hercules SLR—Join our Fundamentals of Rigging Course in Hamilton, Ontario and learn how to rig it right with Steve Hache and gain practical, hands-on experience. Learn more here, or e-mail sbohm@herculesslr.com or call (905) 790-3112


FOR RELATED READING, CHECK OUT OUR BLOGS:

TRAIN WITH THE BEST IN HAMILTON, ONTARIO

WELCOME TO HAMILTON, ONTARIO: MEET RIGGER, JIM CASE


HERCULES SLR PROVIDES MAINTENANCE, INSPECTIONS & REPAIRS FOR RIGGING EQUIPMENT

NEED A LIFT? DROP US A LINE, OR GIVE US A CALL!

INFO@HERCULESSLR.COM  1 (877) 461-4876

 


Hercules SLR is part of Hercules Group of Companies, with locations and unique businesses coast-to-coast. We provide securing, lifting and rigging services for sectors in Canada and Internationally. Hercules SLR serves the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

We have the ability to provide any hoisting solution your business or project will need. Call us today for more information. 1-877-461-4876 or email info@herculesslr.com

We Pull Anything! ATV Towing Tips

atv towing tips

We Pull Anything! ATV Towing Tips

You’ve probably heard us mention that we lift anything, but we also pull anything. 

Many of us on the Hercules SLR team are enthusiastic ATV-ers—That’s all-terrain vehicles for all you newbies out there. 

There’s a couple additional things you’ll need before you hit the road, though—You have to get your ATV to the trail, woods or wherever you ride, and it’s illegal to use your ATV on public roads. There’s also a good chance you’ll get stuck in the mud, so it’s essential to have reliable chain, ropes & winches to haul yourself out of a rut. 

atv towing gear
Winch.

Often, ATV’s are transported in a trailer, sometimes a truck (however, most professional sources recommend a trailer to keep your vehicle secure) and a winch (a device used to pull or let a load out) to move your ATV for transport. Many ATV’s come with winches pre-installed, and aircraft cable is commonly used with them. However, some synthetic winch lines have started to appear and rise in popularity. 

ATV TIPS TO SECURE IT SAFELY

The job’s not done when it’s on the ramp—Now comes securing your ATV. 

You likely dropped a pretty penny on your ATV and don’t want it to come crashing down somewhere on the highway. This is why it’s so important to take the same approach with the tie-down process, equipment included. 

To secure your ATV, you’ll need:

  • Ramp and/or Trailer 
  • Webbed nylon tie-down straps/Ratchet Straps 
  • Metal hooks (Snap, wire, flat or delta hooks/rings if strap isn’t equipped with them)

Once your ATV is secure, it should look like it’s supporting a rider, and the wheels should be firmly placed against the trailer. 

It’s also important to make sure your trailer or towing vehicle has the proper rated-capacity to hold the ATV, it has an appropriate amount of tie-down points and your tie-down method complies with the owner’s manual. Take your time loading it onto the trailer, so you don’t over-shoot the trailer and ‘jump’ it, and be sure the trailer, and the ATV are aligned straight with your vehicle. 

Keep the length of your trailer in mind when driving on public roads, take it slow and try to avoid passing other cars if possible. 

ATV TIPS TO TOW IT SAFELY  

Here’s a few members of the Hercules SLR team having fun on their ATV’s.

Okay, so your ATV is secure and you’ve made it to your favourite muddy trail. What else would you possibly need?! 

Like we mention, many ATV’s do have winches, but this isn’t always enough if you’re truly stuck. Their reach might not be enough or they could fail. Some sort of towing line will be invaluable during these situations.

There are many benefits of using a synthetic strap—For example, synthetic strap snapback tends to be less severe & hazardous than say, chain snapback. It also tends to break less than rope, be more durable AND much easier to de-mud. There’s also less risk of cuts on the hand from handling chain or steel, versus synthetic rope, like AMSTEEL Blue.    

Here are some more safety tips for safe muddin’: 

  • NEVER ride alone 
  • Bring or wear at least one piece of hi-vis clothing. Why? Well, if something were to happen and you’re suited-up in camoflauge, it will be extremely difficult for first-responders or search parties to easily locate you. 
  • Keep the distribution of weight in-mind when towing your ATV to avoid tip-over 
  • We can’t repeat this enough—Bring a towing strap and don’t get stuck in the mud! 

What other equipment is beneficial to bring on your ATV rides? Here are some of our suggestions: 

  • Water 
  • Safety gloves
  • First-aid kit 
  • GPS/Phone/Compass 
  • Water-resistant gear (Jackets, ponchos, etc.) 
  • Tools for repair (Tire repair, etc.) 

TOWING EQUIPMENT AT HERCULES SLR:  

CHAIN

  • Standard chain
  • Grade-70 Transport Chain 

SYNTHETIC SLINGS

  • Standard Nylon & Polyester Round Slings
  • Polyester Round Slings 

SYNTHETIC ROPE

  • Amsteel Blue Rope 
  • Manila Synthetic Rope
  • Nylon Synthetic Rope 

TIE DOWN EQUIPMENT

  • Ratchet Straps 
  • Tie-down Cargo Strap with Ratchet
  • Tie-down Cargo Strap with Ratchet 
  • Rubber Tie-down 

WIRE ROPE

  • Aircraft Cable 
  • Standard Wire Rope 

FOR RELATED READING, CHECK OUT OUR BLOGS:

WHICH ROPE HAS THE GREATEST TENSION?

STOP THE SNAP: PREVENT ROPE SNAPBACK

SAMSON K-100 HOIST LINE: THE FIRST SYNTHETIC CRANE ROPE


HERCULES SLR PROVIDES MAINTENANCE, INSPECTIONS & REPAIRS FOR RIGGING EQUIPMENT

NEED A LIFT? GIVE US A CALL, OR DROP US A LINE.

INFO@HERCULESSLR.COM  1 (877) 461-4876

 


Hercules SLR is part of Hercules Group of Companies, with locations and unique businesses coast-to-coast. We provide securing, lifting and rigging services for sectors in Canada and Internationally. Hercules SLR serves the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

We have the ability to provide any hoisting solution your business or project will need. Call us today for more information. 1-877-461-4876 or email info@herculesslr.com

How we Make a HUGE Wire Rope Sling in Hamilton, Ontario

spools to make wire rope sling

HOW HERCULES SLR IN HAMILTON, ONTARIO MAKES A GIGANTIC WIRE ROPE SLING

What are we up to at Hercules SLR in Hamilton, Ontario? We’re making big things – a big wire rope sling, specifically.  

Check out these shots of Bryan Jarret, Production Supervisor and Adam making a sling for crane-use. It takes both of these guys just to hold it! 

So, how do Hercules SLR rigger’s make a sling this big? We’ll show you. 

WIRE ROPE SLING MAKING—WATCH HOW IT’S DONE

rigging tech pressing wire rope sling

 

 

 

 

 

This is Bryan Jarret, our Production Supervisor at Hercules SLR in Hamilton, Ontario. Here, he’s pressing these huge lengths of wire rope to form a 6-foot eye on each end. 

This large sling will eventually be used on a crane for one of our clients’ here in Ontario. 

HOLDING A SLING IS A TWO-MAN JOB

rigging techs hold wire rope sling

 

 

 

 

 

 

 

 

 

A sling this size takes about 1-hour to splice. Each foot weighs about 15-20 pounds on its own. One technician holds the sling, while the other technician splices the opposite end. 

FORMING THE WIRE ROPE SLING EYE

wire rope sling socket swaging

 

 

 

 

 

 

 

 

 

A wire rope this size has a WLL of 76,000lbs. If these two rigging technicians were standing on top of one another, the sling would still be taller than both of them! 

BIG WIRE ROPE SLINGS NEED BIG MUSCLE

rigging techs swage and splice steel cable sling

 

 

 

 

 

 

 

 

Here, they complete the pressing/swaging process on the other side. As the wire rope strands become tighter, the technicians must manually bend through the eye, which takes a lot of arm-strength!  

There you have it, folks—Here’s how our riggers make a sling that lifts BIG things. 


HERCULES SLR RIGS IT RIGHT

NEED A LIFT? HERCULES SLR PROVIDES WIRE ROPE SLING INSPECTIONS & REPAIRS 

INFO@HERCULESSLR.COM  1 (905) 790-3112


FOR RELATED WIRE ROPE SLING READING,

VISIT OUR BLOG:

WELCOME TO HAMILTON, ONTARIO: MEET RIGGER JIM CASE

RIGGING TIPS: AVOID COMMON WIRE ROPE DAMAGE

WIRE ROPE: A MANUFACTURING & TRANSPORTATION PIONEER


STAY IN THE LOOP—FOLLOW US

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Hercules SLR is part of Hercules Group of Companies, with locations and unique businesses coast-to-coast. We provide securing, lifting and rigging services for sectors in Canada and Internationally. Hercules SLR serves the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

We have the ability to provide any hoisting solution your business or project will need. Call us today for more information. 1-877-461-4876 or email info@herculesslr.com

Which Rope Has the Greatest Tension?

wire rope rigging, Which Rope Has the Greatest Tension?

WHICH ROPE HAS THE GREATEST TENSION?

Which rope has the greatest tension? That’s a good question, with many answers that might surprise you. 

Rope tension can be a confusing concept for some to grasp (they’ve even studied why students have such a hard time grasping the concept of tension with a block and pulley)—we’re going to explain why ‘which rope has the greatest tension?’ isn’t necessarily the best question to ask.

Instead, we’re going to discuss how tension affects rope, and why different rope will demonstrate different tensions depending on the conditions. 

Rope tension is affected by a number of things. like the size/weight of the load, length of rope, diameter of the sheave, speed/velocity of the pull and any wear & tear the rope has been placed under. 

In this article, we’ll cover:

  • What’s rope tension, and why does it matter? 
  • Hoisting equipment selection
  • Tension fatigue—What is it? 
  • Tensile strength—What is it? 
  • Rope at Hercules SLR 

WHICH ROPE HAS THE GREATEST TENSION?

WHAT IS ROPE TENSION? 

Tension refers to what happens when a rope or cable is used to transmit a force. Put even simpler, rope is under tension when it’s attached to something. 

Consider what happens when a rope and hoist pulls a piece of building material. In this scenario, the rigger themselves isn’t in contact with the load, they’re not placing direct force on the load—The rope is. 

It’s a simple concept, with many ways to calculate, which all depend on different circumatances, like the weight the rope must lift and other factors that might impact tension. 

WHICH ROPE HAS THE GREATEST TENSION? 

There are many ways to discuss rope tension. Steel (iron combined with other mined materials) is considered to have one of the greatest tensile strengths. However, steel wire rope’s construction and fabrication can impact tensile strength, and its rated capacity.

This might seem a bit over-complicated, but it’s worth understanding how tension works, even if you’re not a physicist. Most mechanical applications use tension, which is calculated in newton’s. 

What’s a newton? A newton is the force you need to accelerate a 1-kilogram mass by 1-metre per second if no friction is present. However, this can change very quickly—that’s why for the sake of practicality, we won’t discuss what these calculations are, but how tension impacts a rigging operation. 

EQUIPMENT SELECTION & TENSION

Tension can help you understand rope’s breaking strength, as well. Breaking strength refers to the weakest point of the rigging (in this case, a rope) whether it be the webbing, end-fittings, or tensioning device.

A tensioning device is used to apply force at a particular point in the rigging to create tension. This is typically done to reduce hazards that would happen otherwise.  

TENSION FATIGUE

Tension fatigue happens to steel wire rope or synthetic rope when it’s subjected to different stress-levels (represented by the stress level exerted on the rope).

Basically, tension deteriorates with time and the older a rope is, the less accurate it’s original ratings become.

TENSILE STRENGTH

First of all—What’s tensile strength? Tensile strength (in this case) measures the force that would break the rope when under pressure. 

There are three kinds of tensile strength—They are:

1) Yield Strength

Yield strength refers to the highest amount of stress the rope can withstand without causing any deformations to the original rope dimension’s. 

2) Ultimate Strength

The ultimate tensile strength refers to the total amount of stress or force the rope can take.

3) Breaking Strength 

Breaking strength refers to a rope’s ability to withstand a lift, pull or move at a specific point. 

ROPE AT HERCULES SLR 

Although we didn’t necessarily tell you ‘which rope has the greatest tension’, we hope this helps you decide which rope to choose based on their tensile properties and what works best for the application, lift and load.

Hercules SLR carries rope for marine, safety, rescue, arborist applications and more—Drop us a line and we’ll pair you with the best rope for whatever application you have. 


RIG IT RIGHT

WHAT ARE YOU WAITING FOR?

INFO@HERCULESSLR.COM 1-877-461-4876


FOR RELATED READING,

VISIT OUR BLOG:

RIGGING TIPS: AVOID COMMON WIRE ROPE DAMAGE

STOP THE SNAP: PREVENT ROPE SNAPBACK

SAMSON K-100 HOIST LINE: THE FIRST SYNTHETIC CRANE ROPE


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Hercules SLR is part of the Hercules Group of Companies. We have a unique portfolio of businesses nationally, with locations coast-to-coast. Hercules Group of Companies provides extensive coverage of products and services that support a variety of sectors across Canada which includes the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, mining and marine industries. 

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

We have the ability to provide any hoisting solution your business or project will need. Call us today for more information. 1-877-461-4876 or email info@herculesslr.com

Engineer (by Default) Emily Warren Roebling

Brooklyn bridge engineer

Emily Warren Roebling (September 23, 1843 – February 28, 1903) is known for her contribution to the completion of the Brooklyn Bridge after her husband Washington Roebling developed caisson disease (a.k.a. decompression disease). Her husband was a civil engineer and the chief engineer during the construction of the Brooklyn Bridge.

Emily Roebling

Engineer (by Default) Emily Warren Roebling: Early Life

Emily was born to Sylvanus and Phebe Warren at Cold Spring, New York, on September 23, 1843. She was the second youngest of twelve children. Emily’s interest in pursuing education was supported by her older brother Gouverneur K. Warren. The two siblings always held a close relationship. She attended school at the Georgetown Visitation Academy in Washington DC.

In 1864, during the American Civil War, Emily visited her brother, who was commanding the Fifth Army Corps (a.k.a. V Corps), at his headquarters. At a solider’s ball that she attended during the visit, she became acquainted with Washington Roebling, the son of Brooklyn Bridge designer John A. Roebling, who was a civil engineer serving on Gouverneur Warren’s staff. Emily and Washington married in a dual wedding ceremony (alongside another Warren sibling) in Cold Spring on January 18, 1865.

As John Roebling was starting his preliminary work on the Brooklyn Bridge, the newlyweds went to Europe to study the use of caissons for the bridge. In November 1867, Emily gave birth to the couple’s only child, John A. Roebling II, while living in Germany.

Engineer (by Default) Emily Warren Roebling: Brooklyn Bridge

On their return from their European studies, Washington’s father died of tetanus following an accident at the bridge site, and Washington took charge of the Brooklyn Bridge’s construction as chief engineer.  As he immersed himself in the project, Washington developed decompression sickness, which was known at the time as “caisson disease”.  It affected him so badly that he became bed-ridden.

As the only person to visit her husband during his sickness, Emily was to relay information from Washington to his assistants and report the progress of work on the bridge. She developed an extensive knowledge of strength of materials, stress analysis, cable construction, and calculating catenary curves through Washington’s teachings. Emily’s knowledge was complemented by her prior interest in and study of the bridge’s construction upon her husband’s appointment to chief engineer. For the decade after Washington took to his sick bed, Emily’s dedication to the completion of the Brooklyn Bridge was unyielding. She took over much of the chief engineer duties, including day-to-day supervision and project management. Emily and her husband jointly planned the bridge’s continued construction. She dealt with politicians, competing engineers, and all those associated with the work on the bridge to the point where people believed she was behind the bridge’s design.

In 1882, Washington’s title of chief engineer was in jeopardy because of his sickness. In order to allow him to retain his title, Emily went to gatherings of engineers and politicians to defend her husband. To the Roeblings’ relief, the politicians responded well to Emily’s speeches, and Washington was permitted to remain chief engineer of the Brooklyn Bridge.

The Brooklyn Bridge was completed in 1883. In advance of the official opening, carrying a rooster as a sign of victory, Emily Roebling was the first to cross the bridge by carriage. At the opening ceremony, Emily was honored in a speech by Abram Stevens Hewitt, who said that the bridge was

…an everlasting monument to the sacrificing devotion of a woman and of her capacity for that higher education from which she has been too long disbarred.

Engineer (by Default) Emily Warren Roebling: Later Life

Upon completion of her work on the Brooklyn Bridge, Emily invested her time in several women’s causes including Committee on Statistics of the New Jersey Board of Lady Managers for the World’s Colombian Exposition, Committee of Sorosis, Daughters of the American Revolution, George Washington Memorial Association, and Evelyn College.  This occurred when the Roebling family moved to Trenton, New Jersey. Emily also participated in social organizations such as the Relief Society during the Spanish–American War. She traveled widely—in 1896 she was presented to Queen Victoria, and she was in Russia for the coronation of Tsar Nicholas II.  She also continued her education and received a law certificate from New York University.

Engineer (by Default) Emily Warren Roebling: Tributes

Roebling is also known for an influential essay she authored, “A Wife’s Disabilities,” which won wide acclaim and awards. In the essay, she argued for greater women’s rights and railed against discriminatory practices targeted at women. Until her death on February 28, 1903, she spent her remaining time with her family and kept socially and mentally active.


FOR MORE INFORMATION ON RIGGING,

CHECK OUT OUR BLOGS:

A BRIEF HISTORY OF ELEVATOR WIRE ROPE

WIRE ROPE: A MANUFACTURING AND TRANSPORTATION PIONEER

WOMEN IN INDUSTRY – INSPECTION TECHNICIAN HEATHER YOUNG


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Is a career in rigging right for you? Hercules SLR will lift you there.

Click here to learn more about career opportunities across Canada with Hercules SLR. 

Hercules SLR is part of the Hercules Group of Companies which offers a unique portfolio of businesses nationally with locations from coast to coast. Our companies provide an extensive coverage of products and services that support the success of a wide range of business sectors across Canada including the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, oil and gas, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

Welcome to Hamilton, Ontario: Meet Jim Case, Rigger

rigger doing repair at hercules slr

RIGGING WITH OVER 15 YEARS’ EXPERIENCE: JIM CASE INTERVIEW

There’s so much experience to be found at Hercules SLR – today, we sit down with Associate Rigger Jim Case (he has over 15 years’ experience!) to discuss some cool projects he’s rigged, his path at Hercules SLR and some career tips for new workers starting out. 

Read on to learn more about Jim Case, and his job as a Rigger at Hercules SLR in Hamilton, Ontario. 

Tell us about your background as a Rigger, Jim: 

I started working in the rigging industry when I was 20 years old. I worked in a rope shop for 5 years and spliced rope. The company I worked for was bought, then switched hands a few times – I ended up making slings which, at the time, were more popular for us than rope. 

During my career, I’ve spliced a lot of wire rope for communication towers, steel mills, and have done a lot of work to drive belts. I’ve also had the chance to complete some projects for the US Military, specifically catapult ropes. And, I’ve done a bit of testing here in Hamilton, which is always fun! 

Nowadays, it’s easier to find a focus and not move around so much – workers will typically find their niche and grown within that. Examples of these niches could be circus rigging or offshore rigging.  

Now, I’m a rigger with Hercules SLR and fabricating synthetic slings – I enjoy work and keeping busy! 

Why did you decide to work in this industry?

Well, to be honest – I was 20 and needed a job! I put applications in, and I ended up really liking the industry. I’m doing the same job I was then, but now with Hercules SLR! 

I started working in the rigging industry in the late ’70’s – during the early 1980’s, many company owners were streamlining their business and selling off anything that wasn’t related to steel. This means I moved around a little bit! 

There’s a joke I always like to make – I’ve been bought and sold so many times, I don’t know if everyone or nobody wanted me! But, I’m very happy to have ended up with Hercules SLR. 

What’s something you’re most proud to have accomplished in your career at Hercules SLR?

Honestly, I’m proud of my attendance. I’m a loyal employee, and I never miss work.

Tell us about an exciting or cool project you’ve worked on during your time at Hercules SLR:

One of the coolest projects (that’s pretty notable too!) I worked on was preparing rope to temporarily open the roof of The O Stadium in Montreal, where they held the 1976 Olympics.

The O Stadium’s roof was originally intended to be retractable, but (infamously) a tower meant to support it wasn’t completed in time. This meant they needed a way to temporarily hold it open for the Olympic games, and I got to work on that project.

rigger, olympic stadium ropes, hercules slr
Aerial view of The O Stadium during the 1976 Olympics, with ropes installed by Jim

 For the O Stadium roof, we used gelded, 2inch rope and a special lubrication. This took us 2 weeks and we had a 12-guy crew! 

On a day-to-day basis, I really enjoy splicing rope. Even though it can be repetitive sometimes, it’s different everyday. Most of the orders take 1-2 hours to finish, so I can work on a few different types of projects throughout the day which is a nice variety. 

You’ve worked in the rigging industry for many years – tell us why it’s important to service your equipment and gear:

The main reason? Safety. Over the years, I’ve seen workers take a lot of shortcuts, which can lead to a lot of mistakes. Sometimes, workers can be resistant to change  – which is sometimes why they keep taking these shortcuts that might not be a safe procedure.

For example, I splice differently than some of the riggers in Brampton, but the end-product performs the same function. Some riggers stop splicing the rope on the left, right or vice versa. When you make things according to specified standards, you can sometimes take more liberties – like I said, as long as it performs.  

Tell us about a mistake you see made often in the industry:

The biggest mistake has got to be rigging equipment used improperly. When Hercules SLR receives a complaint that a product isn’t working like it’s supposed to, we have to see the equipment being used to remedy any issues they’re having.

In my personal experience, 90% of the time when this happens the equipment isn’t being used correctly – which is why it isn’t working correctly! 

What advice do you have for a new rigger, or someone just entering this industry?

A  big piece of advice I have for new workers in any industry really, is to plan your daily schedule at the beginning of your day – this makes it easier to deal with the flow of the day. 

For rigging, specifically, do the job right the first time! Earlier, you asked me about mistakes I see in the industry – rigging equipment passes through many different phases. It’s manufactured, used to lift various things and as I mentioned, is often used improperly. When rigging equipment fails, expensive loads can be damaged, companies can be shut down and people can be injured, or worse – killed. 

It’s important a rigger understands the consequences of cutting corners – and doesn’t do it. 

Any other helpful tips?

To select the right equipment for a lift, a big tip is to talk to someone who knows their stuff, and the end-user – whoever will be using the equipment. In a company, it can be helpful to talk to the sales team to learn more about this. 

For example, who will lift the rope? Do they have the capability to lift an 800-pound rope, or a 20-pound rope? They may want to select grommet-type or cradle-rope, which is usually smaller and more flexible. It’s important to make sure whoever’s at the end of the line can handle it. 

What’s something people might be surprised to learn about rigging?

Material and fabrication are surprising! People are astounded at the strength of nylon round slings! Sometimes, synthetic slings can be stronger and more flexible than other types of rope, like wire rope. For example, there used to be a rope made of Kevlar rope (this is what bulletproof vests are made of. FYI) that could float, but was heavier than steel – I haven’t seen it used recently, but it was used to pull huge barges. 

Finally, what do you like most about being a rigger at Hercules SLR? 

Our team. We have a great group of people here in Hamilton, Ontario. We’re like friends, but we actually get stuff done. 


Hercules SLR is part of the Hercules Group of Companies which offers a unique portfolio of businesses nationally with locations from coast to coast. Our companies provide an extensive coverage of products and services that support the success of a wide range of business sectors across Canada including the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, oil and gas, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

We have the ability to provide any solution your business or project will need. Call us today for more information. 1-877-461-4876. Don’t forget to follow us on FacebookTwitter and LinkedIn for more news and upcoming events.

What should you do before you use a hoist?—Hercules How-To

what should you do before you use a hoist

HERCULES HOW-TO: WHAT SHOULD YOU DO BEFORE YOU USE A HOIST?

What should you do before you use a hoist? If you’re a rigger, or have worked in construction, you’ve likely used some sort of hoist before. Hoists are mechanical devices use to lift, pull and hoist, and are equipped with a pulley. They’ve also been around for awhile—historians haven’t been able to pinpoint exactly when the first hoist was used, but even Leonardo da Vinci had a hoist design.

Since then, hoist technology has come a long way – hoists are available in manual, electric, hydraulic and even universal styles. They’re used in a number of different industries. Today, we cover more about hoists used for securing, lifting and rigging applications and what exactly you should do before you use one. 

WHAT SHOULD YOU DO BEFORE YOU USE A HOIST? HAZARDS 

We talk a lot about hazards, how to avoid them and prevent them on a job site. There are a number of hazards that present themselves at work – both chemical and physical. When rigging with hoists, there are a number of hazards there.

Some of the most common hazards are: 

  • Falling equipment, materials, etc. 
  • Electrical issues 
  • Loading hoist beyond it’s WLL or SLL, known as overloading 

WHAT SHOULD YOU DO BEFORE YOU USE A HOIST? TRAINING

It’s important that anyone using the hoist, or operating rigging equipment in general, has proper training in hoist safety and operating procedures. Hoists are often used in rigging, and are commonly-known as a component for cranes. Hercules’ highly-skilled trainers teach a variety of courses that will prepare you to rig with hoists.

The Hercules Training Academy courses include: 

WHAT SHOULD YOU DO BEFORE YOU USE A HOIST? TYPES OF INSPECTION

According to the ASME (American Society of Mechanical Engineers), there are thee main types of inspection that rigger’s (or any end-user of hoisting equipment) have to do. 

PREOPERATION INSPECTION

Before each shift, have a qualified person inspect hoisting equipment for:

  • Ensure mechanisms operate properly – check for unusual sounds, and make adjustments as needed 
  • Hoist limit device, for electric or air-powered hoists without a load on its hook: The load block should inch on limit device, or run at a slow speed when on multi-speed or variable-speed hoists. Using travel-limiting clutches as a limit device? Follow inspection methods detailed in the travel-limiting clutch’s manual. 
  • Hoist’s braking system
  • Check lines, valves and other parts of air system for leakage
  • Check hooks & latches; ensure hooks are in accordance with ASME B30.10
  • Check hoist rope for gross damage, and these features that could cause immediate hazards, including:
    • Rope distortion: kinking, crushing, unstranding, bird-caging, main strand displacement and/or core protrusion
    • General corrosion
    • Broken or cut strands 
    • Number, distribution and type of broken wires (if visible)
  • Check load chain for gross damage, and any of these conditions which can be hazardous for work. These are: 
    • Gouges, nicks, weld splatter, corrosion and/or distorted links. 
    • Test the hoist with the load in lifting and lowering directions, and watch the operation of the chain and sprockets. The chain should feed smoothly with the sprockets. 

FREQUENT INSPECTION

Frequent inspections should happen continually, during use and rest periods. During frequent inspections, a qualified person will determine if issues found are hazards and whether the hoist should be removed from service temporarily, inspected further and repaired, or removed from service permanently and replaced. 

During frequent inspections, inspect:

  • Operating mechanisms for proper orientation, adjustment and unusual sounds
  • Braking system
  • Lines, valve and other parts of air systems for leakage
  • Check hooks & latches; ensure hooks are in accordance with ASME B30.10
  • Hoist limit device, for electric or air-powered hoists without a load on its hook: The load block should inch on limit device, or run at a slow speed when on multi-speed or variable-speed hoists. Using travel-limiting clutches as a limit device? Follow inspection methods detailed in the travel-limiting clutch’s manual. 
  • Check hoist rope for gross damage, and these features that could cause immediate hazards, including:
    • Rope distortion: kinking, crushing, unstranding, bird-caging, main strand displacement and/or core protrusion
    • General corrosion
    • Broken/cut strands 
    • Number, distribution and the kind of visible broken wires 
  • Check load chain for gross damage, and any of these conditions which can be hazardous for work. These are:
    • Gouges, nicks, weld splatter, corrosion and distorted links 
    • Test the hoist with the load in lifting and lowering directions, and watch the operation of the chain and sprockets. The chain should feed smoothly with the sprockets. 
    • Check rope/load chain reeving and make sure it complies with the manufacturer recommendation. 

PERIOD INSPECTION 

Periodic inspections can be conducted wherever your hoist is set up, as they don’t require the rigger to disassemble the hoist. 

  • Open or remove covers and other items to inspect components. 
  • A qualified, competent person will determine if conditions found during inspection make a hazard, or whether disassembly is required.
  • Inspect the following for wear, corrosion, cracks and distortion:
    • Ensure fasteners aren’t loose, or on the verge of coming loose 
    • Load blocks
    • Suspension housings 
    • Hand chain wheels 
    • Chain attachments 
    • Clevises
    • Yokes 
    • Suspension bolts
    • Shafts
    • Gears
    • Bearings 
    • Pins
    • Rollers
    • Locking and clamping devices 

WHAT SHOULD YOU DO BEFORE YOU USE A HOIST? WHEN DO I INSPECT?

We’ve covered the three types of hoist inspection required in Canada, according to the American Society of Mechanical Engineering (ASME). This is when you should conduct each type of inspection.

1. PREOPERATION INSPECTION

A visual inspection should be conducted before each shift. This inspection does not have to be recorded, but a designated, competent person should inspect the hoisting equipment.

2. FREQUENT INSPECTION

Frequent inspections, like pre-operatation inspection, are visual and don’t need to be recorded but should be done by a designated, competent person. Just how often are ‘frequent’ inspections, you ask? 

A) Normal Service—Yearly

B) Heavy Service—Semiannually

C) Severe Service—Quarterly 

3. PERIOD INSPECTION

Visual, period inspections should be conducted by a competent person who makes records of external coded marks on the hoist. This is acceptable identification in lieu of records. Periodic inspections should be done: 

A) Normal Service—Yearly

B) Heavy Service—Semiannually

C) Severe Service—Quarterly 

Since this article is about what to do before using a hoist, we’re going to focus on what your preoperation – or, preuse inspection should include. 

  • The pre-use inspection should be performed during each shift before the hoist is used. 
  • A competent, qualified person will determine whether conditions found during inspection could create a hazard and, if a more detailed inspection is required. 
  • Inspect the following:
    • Operating mechanisms for proper operation, proper adjustment and unusual sounds.

WHAT SHOULD YOU DO BEFORE YOU USE A HOIST? HAND SIGNALS

what should you do before you use a hoist? hercules slr
Hoisting hand signals.

WHAT SHOULD YOU DO BEFORE YOU USE A HOIST? KNOW THE ROPES  

Before operating a hoist, it’s important to conduct an inspection before-hand. The inspection should consist of: 

Rope Type: Ensure you select the proper type of wire rope. The wire rope you select will depend on the hoist type and the features of the load you will lift. 

Are you familiar with the concept of rope stability before using that hoist? Hoists often use wire rope, which can kink, twist or become crushed if the wrong type or the wrong application is used. 

Drum crushing is a type of rope deterioration that can happen with multiple layers of wire rope on a drum. Whoever inspects the wire rope must evaluate the potential for wire rope crushing. Inspections should detect points where crushing is more likely to happen, and the level of deterioration and appropriate course of action (ex. repair or replacement) can be made. 

WHAT SHOULD YOU DO BEFORE YOU USE A HOIST? YOUR CHECKLIST

Before rigging or lifting with a hoist, know: 

  • The hoisting devices capacity
  • The WLL of: the rope, slings and hardware, and the rigging hardware’s weight

Here are some basic tips from CCOHS for inspecting your hoist: 

  • Pre-Lift: Make sure both hooks (upper and lower) swivel, replace worn chain or wire rope and tag it so it can be removed from service.
  • Post the SLL (safe load limit) in the hoist. 
  • Daily: Inspect hooks, rope, brakes and limit switches for wear and damage.
  • Ensure swivels move freely and there are no cracks or breaks in the hook. 
  • Conduct periodic inspections according to manufacturer rules or legislation. 


NEED A LIFT?  

Hercules SLR offers everything you need for your hoist, crane or lifting project. We offer equipment inspections, repairs, maintenance and hoists from reliable, respected and durablebrands like Crosby, CM and Bronze & Blue


FOR MORE INFORMATION ON OUR HOISTS & SERVICES,

CHECK OUT OUR BLOGS:

CROSBY QUIZ: CAN YOU PASS THIS HOOK INSPECTION QUIZ?

CM’S TIPS: CRANE & HOISTING IN HAZARDOUS AREAS

HERCULES SLR AT THE SABLE STRATEGIC WORKSHOP


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Need more information on rigging services? We’ll lift you there.

Click here to learn more about our rigging services at Hercules SLR. 

Hercules SLR is part of the Hercules Group of Companies which offers a unique portfolio of businesses nationally with locations from coast to coast. Our companies provide an extensive coverage of products and services that support the success of a wide range of business sectors across Canada including the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, oil and gas, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

We have the ability to provide any solution your business or project will need. Call us today for more information. 1-877-461-4876 or email info@herculesslr.com. Don’t forget to follow us on FacebookTwitter and LinkedIn for more news and upcoming events.

Guest Blog: Crosby Talks Forged Wire Rope Clips VS. Malleable Cast Iron Clips

crosby wire rope clips at hercules slr

FORGED STEEL WIRE ROPE CLIPS VS. MALLEABLE CAST IRON CLIPS

What’s the difference between wire rope clips? Guest blogger Danny Bishop, Director of Training for Crosby stopped by Hercules SLR is here to share some information about the difference between malleable cast iron and forged U-Bolt clips.

Read on to discover his expert tips for rigging with U-Bolts. 

 

crosby rigging, hercules slr

 

 

 

 

 

 

 

U-Bolt style wire rope clips are one of the most commonly used accessories in the world of rigging. They can be found in many lifting and non-lifting applications.

Some common applications include winch lines, crane hoist lines, suspension cables, barrier cables, guy wires and many more applications. However, it is critical that the user know there are differences between a forged steel wire rope clip and a malleable cast iron clip.

The forged steel wire rope clip consists of a U-Bolt, two nuts and a forged steel base, which is sometimes called the saddle.

The malleable cast iron U-Bolt style wire rope clip consists of the same components as just mentioned except the clip base is NOT forged steel. In fact, it is a malleable cast iron, and that can make a big difference in the performance and reliability of the clip. The malleable cast iron base does not have the desirable material properties of steel, or the beneficial grain structure that a forged base provides. Although, malleable cast iron products have their place in industry, it is not the manufacturing process of choice for wire rope clip bases. This is especially true if the wire rope clip could be used in a critical application.

Notice that some standards do not allow the use of malleable cast iron clips in critical applications. One example would be ASME B30.5 which states that “Wire Rope Clips shall be drop-forged steel of single saddle (U-Bolt) or double saddle clip. Malleable cast iron clips shall not be used. “ASME B30.26 also states: “Saddles shall be forged steel.”

Additionally, shortcuts in the production process of the bases may also indicate there could be other shortcomings of the product. In some recent testing of malleable cast iron clips, it was found that U-Bolts fractured prior to achieving the recommended forged U-Bolt Clip torque, on 2/3 of the assemblies tested. (See picture of test mentioned).

Also consider:

  • Malleable Cast Iron Clip bases are significantly different from forged bases in size, shape and appearance. See figure 1 to compare a Crosby forged clip base and a Malleable Cast Iron clip, both for ½” wire rope. 
  • Malleable Cast Iron bases are inconsistent in strength, and can have hidden defects. 
  • Malleable Cast Iron clips should not be used for critical applications.
wire rope clips, hercules slr rigging services
Figure 2

 

 

 

 

 

 

 

 

 

 

 

crosby wire rope clips at hercules slr

 

 

 

 

 

 

Note the significant difference in size, shape and appearance even though both are 1/2″ diameter for wire rope. Also, the Crosby clip exceeds ASME B30.26 marking requirements. No readable markings were found on the malleable cast iron clip. 

HERCULES SLR: CROSBY BRAND


Hercules SLR is part of the Hercules Group of Companies which offers a unique portfolio of businesses nationally with locations from coast to coast. Our companies provide an extensive coverage of products and services that support the success of a wide range of business sectors across Canada including the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, oil and gas, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

We have the ability to provide any solution your business or project will need. Call us today for more information. 1-877-461-4876. Don’t forget to follow us on FacebookTwitter and LinkedIn for more news and upcoming events.