06-02-2021, 02:47 PM
The Austin Motor Co. overcame this problem by producing a special pair of matched bearings with the outer races reduced in width to signify the change. They were initially fitted with shims on the outside face of the outer races to enable them to be used in the standard depth housing. Eventually, someone, somewhere woke up and had the housing machined to a reduced depth to allow the matched bearings to sit with the correct amount protruding without adjusting shims.
A random pair of bearings, especially if they are not "1st quality" (R&M, SKF etc) may need to be adjusted to get the preload correct at the time of fitment, using shims between either the inner or outer races.
A random pair of bearings, especially if they are not "1st quality" (R&M, SKF etc) may need to be adjusted to get the preload correct at the time of fitment, using shims between either the inner or outer races.