very low torque bearing assembly 2

[1MadMax]

I am tasked with resolving a bearing requirement in a low torque assembly, bearing size is 1634 (1" o.d.x .75 bore dia.). It is a thin section ball bearing .156" (4mm) thick. There is very little loading on the bearing. The assembly osilates rapidly around 7-8 Hz however preliminary assessment (pre-build) of the bearing is done by spinning the bearing and by "feel". We have tried cleaning techniques and run-in procedures to brunish any incidental retainer contact with some limited success. The best we've been able to find to date is to purchase ABEC7, P25 bearings supplied dry and sorting the shipment for "good ones" (yield fluxuates from 80% to 0%), then try to assemble these into full-up assemblies without contaminating them in process. Does anyone have knowledge of a cleaning or other process which provides ultra free running results for contaminated bearings and supplied bearings that are inadequate? Keeping in mind optics are involved so out-gassing must be avoided. I realize this is a very unique application and any help/insight would by appreciated.

 

[1MadMax]

Unclesyd - Hey another good lead!! I'm glad I started my thread here because of the excellent tips I've received. I have a call into Micro Care to investigate possible cleaning improvements. I think that finding a suitable cleaning solution will help us in our process control. Thanks again