Hardened High-Strength Pins - ![]()
One of the most stressed components in a roller chain is the pins. Of course, this translates over to the connecting link of a chain. Here at DUROCHAIN, each pin in our connecting links undergoes a specific hardening process to improve wear life, strength, and fatigue resistance.
- Straight Sideplates -
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Precision made from high-grade steel, straight side plates provide superior wear life and improve strength.
- Precision Solid Round Parts -
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Drastically improving chain wear life and performance of transmitting energy, solid bushings and rollers provide perfectly cylindrical bearing surfaces. Solid round parts require special manufacturing equipment that most factories will not make the initial investment in; however, the improvements in wear life and performance versus a chain with split round parts outweigh these costs in the long run. The issue with a split bushing or a split roller is when a chain experiences shock load or is used for some time, the split components will begin to deform, causing excessive internal wear and friction. All of our standard mild-steel DUROCHAINs use these solid round parts except hollow pin chains. Additionally, our bushings are made from alloy steel hardened to a specific HRC; the rollers are made from SAE steel and hardened to a specific HRC as well. We have found that these specific hardnesses provide the best wear life possible for the material itself- Perfectly Factory Pre-Load -
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DUROCHAIN is factory pre-loaded to a specific amount that ensures absolute minimal chain stretch. By today's standards, almost all roller chains are pre-loaded to some extent; however, a specific percentage achieves the best balance of reducing stretch and improving wear life. Extensive research was done to ensure DUROCHAIN was factory pre-loaded to this perfect percentage. Additionally, pre-loading ensures all components are perfectly aligned post-manufacturing for optimal performance.
