1. Tensile Strength
Definition:
The maximum load a chain can withstand when pulled until it breaks.
Purpose / Function:
Crucial for handling high torque during startup or acceleration. A chain must have sufficient strength to avoid breakage under such conditions.
2. Fatigue Strength
Definition:
The strength to resist fatigue failure caused by repeated loads, such as during high-speed driving or winding roads.
Purpose / Function:
Directly affects the chain’s durability. High fatigue strength ensures long-term use without cracking or failure due to stress repetition.
3. Wear Resistance / Elongation Resistance
Definition:
Chains tend to elongate over time due to metal-to-metal wear between pins and bushings, especially when lubrication is insufficient.
Purpose / Function:
When a chain elongates:
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It misaligns with the sprocket
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Causes skipping or slipping teeth
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In the worst case, may break or fall off
A wear-resistant chain ensures better sprocket engagement, reduces maintenance needs, and improves cost-effectiveness.