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  1. #11
    Neale's Avatar
    Lives in Plymouth, United Kingdom. Last Activity: 10 Hours Ago Has been a member for 5-6 years. Has a total post count of 1,193. Received thanks 221 times, giving thanks to others 5 times.
    Yes, 5 thou is definitely too much. Half-thou is not quite as much as the usual "thou per inch" rule of thumb, but then you are heating the bearing and I'm not quite sure how hot you can reasonably make that. The other useful trick, assuming that you are fitting two identical bearings, is to turn down the central area of the shaft to give a thou or two extra clearance everywhere except the areas where the bearing rings are going to sit. That means that the bearing that has to go on furthest has less chance to grab/jam partway down. You could also make it easier by finding a reasonably close-fitting tube that fits over the shaft with a square end and use that to push the bearing (pushing on the inner race) to try to maximise the chance of it staying square.

    I'm not quite sure why Spluppit recommends tallow specifically over a more conventional (and easier to find in the workshop?) grease - I would be interested to hear. That's not a negative comment - I have just not heard of that before and I'm curious.
    Last edited by Neale; 2 Weeks Ago at 08:29 AM.

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