Samson K-100 hoist line: the first synthetic crane rope
Samson rope’s K-100 hoist rope is the first of its kind – a synthetic rope to be used with mobile cranes for hoisting applications. Traditionally, steel wire rope has been used for lifting applications with cranes – the K-100 is suitable for crane or truck hoist rope, or mobile crane hoist line applications.
K-100 hoist line: what’s the benefit?
The K-100 hoist rope has a high strength-to-weight ratio, bend fatigue durability and is easy to spool. It has a strength similar to wire rope – but reduces load weight by 80%. It also meets maximum line pull requirements with its 5:1 safety factor.
Samson has coated the K-100 rope in their proprietary coating that includes Dyneema® – this improves its cyclic bend performance compared to sheave applications commonly found on mobile cranes. It has a fibre core/cover – specifically, a polyester control core and a high-modulus (low elasticity) blend.
Samson K-100 Crane Hoist features:
- Corrosion resistant – no rust or lube needed, which helps eliminate environmental concerns
- Easy handling, reeving and installation
- Reduced wear on sheaves and drums
- Reduces number of change outs caused by kinking, bird-caging, or damage from diving
- Reduces risk of hand injuries from broken wires, increased handling safety
- Has same load pull and load chart, but with a 5:1 safety factor
- Standardizes main and auxiliary hoist to one rope
- Torque-neutral construction reduces load spin and cabling
- Resistant to drum-crushing
Safety Factor: calculating stress-based design factor
There are different definitions of safety factor across many industries – which is also commonly known as the design factor. The Samson K-100 rope uses the safety or design factor calculation related to rigging and lifting applications.
The safety factor is the theoretical reserve capability of a product, which is determined by dividing the ultimate load by the working load limit (WLL). The ultimate load may also be known as nominal breaking strength. This calculation is expressed as a ratio – the K-100’s safety factor is 5:1.
Samson Rope K-100 Hoist Line: weight matters
Another benefit of K-100 crane wire is it’s weight – as we mentioned, it’s 80% lighter than wire rope and can be beneficial for operators who travel during Spring Thaw Restrictions in Canada. Spring Thaw Policies are periods of time during/following Canadian Spring, (specific timelines and affected zones vary from province to province – if you’ve experienced a Spring in Nova Scotia versus British Columbia you know why!) and limit damage to at-risk roads.
Studies show that pavement reacts to a load 50%-70% greater in the Spring. Basically, the same axle a truck drives on daily can cause 5-8 times more damage in the Spring than any other time of the year, due to the heavier load. For mobile operators with a lot of terrain to cover, the K-100’s reduced weight can make your highway travels that much easier.
Samson Rope K-100 Hoist Line: inspection matters, too
No matter how good or durable a rope is, it will show wear and tear after a period of time. Some used rope won’t reduce strength, but many will. Before inspection, consider the following:
- The length of rope;
- The time it’s been in service;
- The type of work it does;
- Where the damage and the extent of the damage.
On a regular basis, inspect your Samson K-100 rope for the following conditions/damage and take the proper corrective action (repair or retire) based on your findings:
Ultimately, Samson’s K-100 crane rope brings increased safety, easy handling and straight-forward inspection procedures. Hercules SLR Business Development Manager, Dwayne Fader says “Steel wire rope will always have its place – but innovations like this that are much lighter and easy to work with are always exciting.”
Information via Samson Rope – Find more information on the K-100 Rope here
Want more crane training? Participate in our Overhead Crane Operator and Fundamentals of Overhead Crane courses – e-mail [email protected] to sign up. Or, click here to discover more Hercules SLR training courses.
References: - https://www.canadacartage.com/understanding-canadian-spring-thaw-regulations/ - https://www.samsonrope.com/docs/default-source/case-studies/cs_viant_crane_k-100.pdf - https://samsonrope.com/docs/default-source/case-studies/cs_digging_and_rigging_k-100_web.pdf