Hercules SLR is a Master Distributor of YOKE rigging hardware & components. YOKE manufactures top-quality safety components—every time, everywhere. 
Hercules SLR is a Master Distributor of YOKE rigging hardware.

Since 1985, YOKE manufactures durable, reliable & high-quality rigging hardware that keeps your load secure, and your team safe. They run a strict production facility, with a huge emphasis on quality control & safety at every stage of the manufacturing process—From raw materials to the finished product for the end-user, with facilities across the globe, in Canada, Los Angeles and China.

YOKE is an ISO 9001 certified company with Type-Approval by major international authorities like SABS, ZU, ABS, API, and DNV. YOKE has achieved various certifications that ensure their unsurpassed product engineering.

YOKE has certifications and product type approval by major international certification authorities, including:

ABS Approval (American Bureau of Shipping) 

  • ABS provides certification to support an efficient product certification process for products produced in large quantities.

API Spec QI (American Petroleum Institute) 

  • Certification based on standards developed by American Petroleum Institute (API), which specify that the design & manufacture of swage & spelter sockets, shackles, snatch blocks, grade 8/10 chain fittings for chain, wire rope, & webbing slings for material handling system and safety components for personal safety purposes have been assessed by the API and conform to API Specification Q1.

CNLA Certification (Chinese National Laboratory Accreditation)

  • CNLA certification ensures a quality research and development department, and unsurpassed product engineering.

DGUV Test Certificate (German Social Accidental Insurance)

  • DGUV certification ensures machines, electrical equipment and personal protective equipment (PPE) and quality management systems have passed safety testing.

DNV-GL Certificate 

  • DNV-GL certification shows commitment to continual improvement and sustainable business performance.

ISO 9001

  • ISO 9001 is the international standard that specifies requirements for quality management system(s).


What else does YOKE do to ensure a quality product everytime? Here’s a little more about their testing and quality-assurance process.

Magnaflux Crack Detection:
All forged components, each individually magnaflux detected after heat treatment.
Proof Load Testing:
Chain and components are proof load tested at 2.5 times the Working Load Limits with resultant permanent deformation within 1%.
Dynamic Fatigue Testing:
Batch samples of chain and components are Dynamic Fatigue Tested at 1.5 times Working Load Limit for 20,000 cycles.
Ultimate Breaking Load Testing:
Batch samples are Break Load Tested in a static tensile testing machine to ultimate failure. The minimum ultimate force is equal to the Working Load Limit times the safety factor.
Spectrographic Analysis:
To assure of the proper metallurgy content of all raw materials.
Eddy Current Detection:
All load pins are 100% individually inspected after heat treatment.