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Grade 100 Connecting LinkGrade 100 Alloy SteelTough Powder Coat Finish4:1 Design FactorProof TestedEmbossed with Grade & SizeDesigned for General Connecting Master Links to Chain, Chain to Chain or Hooks to ChainSpare Parts Always Available
The Essential Connector for Modern Lifting Systems
The Grade 100 Connecting Link is an indispensable component in the assembly of chain slings. It serves as the primary mechanical link that joins the chain leg to the master link at the top and to various eye-type hooks or fittings at the bottom. Its "Hammerlock" design allows for quick, on-site assembly and disassembly using only a hammer and punch, eliminating the need for specialized tools or welding.
Material Science and Manufacturing Excellence
Premium Alloy Steel Composition Our connecting links are forged from high-grade alloy steel that has undergone a rigorous Quenching and Tempering process. This heat treatment optimizes the steel's microstructure, resulting in a product that is exceptionally tough and resistant to wear, even under extreme stress. The Grade 100 material is specifically formulated to provide a 25% higher strength rating compared to Grade 80, allowing for lighter and more manageable rigging setups without compromising safety.
Fatigue Resistance and Durability In dynamic lifting environments, fatigue is a critical factor. Our Grade 100 connecting links are fatigue rated to 20,000 cycles at 1.5 times the WLL. This ensures that the component can withstand the repetitive loading and unloading cycles typical of industrial lifting operations, significantly extending its service life and reducing the risk of catastrophic failure.
Operational Advantages
1 Increased Efficiency: The higher WLL of Grade 100 allows for the use of smaller, lighter chains and fittings for the same load, reducing operator fatigue and improving handling speed.
2 Versatile Integration: Designed to be used with both Grade 80 and Grade 100 chains, providing flexibility for mixed-grade rigging inventories.
3 Secure Locking Mechanism: The load pin and locking sleeve (bush) create a tamper-resistant connection that remains secure under load while allowing for intentional disassembly for inspection or reconfiguration.
| FOR CHAIN | e | c | s | d | b | g | WEIGHT (lbs) | WORKING LOAD LIMIT |
|---|---|---|---|---|---|---|---|---|
| 7/32″ | 1.75 | 0.31 | 0.43 | 0.30 | 1.54 | 0.56 | 0.15 | 2,700 |
| 9/32″ | 2.01 | 0.39 | 0.51 | 0.35 | 1.83 | 0.67 | 0.26 | 4,300 |
| 5/16″ | 2.42 | 0.45 | 0.59 | 0.39 | 2.09 | 0.72 | 0.51 | 5,700 |
| 3/8″ | 2.83 | 0.50 | 0.70 | 0.50 | 2.48 | 0.91 | 0.93 | 8,800 |
| 1/2″ | 3.46 | 0.75 | 0.87 | 0.66 | 3.11 | 1.09 | 1.85 | 15,000 |
| 5/8 | 4.06 | 0.83 | 1.14 | 0.83 | 4.17 | 1.30 | 3.09 | 22,800 |
| 3/4 | 4.53 | 1.16 | 1.37 | 0.96 | 4.65 | 1.64 | 5.29 | 35,300 |
| 7/8 | 6.34 | 1.34 | 1.54 | 1.00 | 5.83 | 2.00 | 9.15 | 42,700 |
| 1 | 7.48 | 1.57 | 1.81 | 1.18 | 6.88 | 2.36 | 14.77 | 59,700 |
| 1-1/4 | 8.11 | 1.85 | 2.20 | 1.37 | 8.50 | 3.15 | 24.70 | 90,400 |
Our Grade 100 Connecting Links are manufactured and tested to meet or exceed the most stringent international standards for lifting components.
Compliance Standards
• EN 1677-1: Components for slings - Safety - Part 1: Forged steel components, Grade 8. (Modified for Grade 100 performance levels).
• ASTM A952 / A952M: Standard Specification for Forged Grade 100 Alloy Steel Lifting Components and Welded Attachment Links.
• DIN PAS 1061: Grade 100 lifting chains and accessories.
Testing and Quality Assurance
• Proof Testing: Every production batch is proof load tested to 2.5 times the Working Load Limit. A test certificate is provided for each batch to ensure traceability and compliance.
• Design Factor: A strict 4:1 Design Factor (Minimum Breaking Load is 4 times the WLL) is maintained across all sizes.
• Fatigue Testing: Components are fatigue rated to 20,000 cycles at 1.5 times the WLL, verifying their performance under repetitive stress.
• Magnaflux Crack Detection: 100% of components undergo electromagnetic crack detection to ensure the absence of surface and sub-surface defects.
• Visual Identification: Each link is embossed with the Grade (100) and the manufacturer's mark for easy identification and inspection.
