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Thrust Bearing Cap Clearance

RC Mech

Jul 21, 2014
Ontario, Canada
Working on this 4020 again, replaced the X axis thrust bearings.

When the bearing stack bottoms out in the housing, and the retainer is tight, will there be a gap between the cap and the housing?

It’s sitting at about 0.030” gap now.
To put this one to bed:

Gap is acceptable. Ensure the bearings are bottomed out in the bores, tap the other brg and cap on and crank down (incl. the shim betwixt the larger faces).

Thanks to Dan at ITS for explaining the gap over the phone. 4020 is back together and moving metal. Y-axis bearing was a royal PITA.