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Correct Pre-Load of BPW Taper Roller Bearings
Optimum bearing life is only achievable with the correct amount of bearing pre-load.
Taper roller bearing pre-loads set too high:
Taper roller bearing pre-loads set too low:
The axle nut on the BPW ECO Plus axles have a built-in torque limiter allowing for optimal bearing pre-load adjustment without the use of an external torque wrench.
The steel section of the axle nut and the reinforced nylon hexagonal section are held together with a spring tensioned cup washer, As the axle nut is tightened, the pre-load on the taper roller bearings increase. Once the optimal pre-load has been achieved, the special spring tensioned cup washer flattens out and allows the axle nut to click over without increasing the pre-load on the bearings.
To ensure that the optimal bearing pre-load is achieved, remember to:
The majority of bearing failures that occur are due to incorrect pre-load setting. This can clearly be seen in the below graph.
Causes of Bearing Failures
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