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Old 08-29-2016, 02:24 AM
Motorized Bicycle Elite Member
Join Date: Jul 2010
Location: CA
Posts: 1,742
Default Re: Bike maintenance

It probably does not apply to this situation, but on my bike and others that use sealed bearings on jack-shafts I am thinking two years about before I just remove and replace. I ride off road only and in inclement conditions. There sealed so no cleaning or lubing, and therefore at some point they dry out and or become contaminated and seize up. Either one of two things happens then, trying to spin the outside of the bearing in the pillow or the jack-shaft spins inside the inner bearing ring wearing down the shaft. Cheaper not to ruin jack-shaft, bearings are cheaper. I bought a pack of 10 at around 15 dollars on Ebay free shipping.
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