If roller plates are worn, check for(See Figure 6.1): Revised 12/17/98
Wear pattern(A) caused by drive misalignment
Wear pattern(B) caused by chain rubbing against casing or some obstruction.
**Roller Link Plates are Worn
If chain stiffens or whips it could be caused by:
Worn chain or sprockets
Excessive chain slack
Stiff chain joints
Heavy and pulsating loading
Extra long center distances
If there is a pin failure, it could be caused by:
Loading in excess of chain Rated capacity.
Rated capacity.
If there is a link plate failure, it could be caused by
Loading chain in excess of endurance limit
Pulsating drive condition.
If there is roller or brushing failure, it could be caused by
Exceeded chain capacity at high speeds
Heavy loading at low speed.
CHAIN STIFFENS OR WHIPS
PIN FAILURE
LINK PLATE FAILURE
ROLLER/BUSHING FAILURE
SPROCKET ALICNNMRN