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US 4,286,467 AGranted
Method of selecting rollers for high-speed journal bearings
AssigneeFag Kugelfischer Georg Schafer & Co.
InventorHans Kober
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Abstract
Rollers for a high-speed journal bearing are tested for any unbalance before assembly by being rotated at high velocity while lodged in a movably supported air bearing. Rollers with a dynamic unbalance above a predetermined limit are rejected.
Claims1
A method of selecting rollers for assembly into high-speed journal bearings, comprising the steps of:
- cradling each roller in a generally semicylindrical cup of an air bearing with a horizontal axis;
- resiliently mounting said air bearing on a supporting surface;
- frictionally entraining each roller at high speed by a horizontal stretch of an overlying endless belt in tangential contact therewith to set the roller in rotation about a spin axis substantially coinciding with said horizontal axis;
- measuring rocking motions of said air bearing due to deviations of said spin axis from said horizontal axis;
- and
- eliminating rollers for which the extent of said rocking motion exceeds a predetermined limit.
3 more elements
Dependencies are inferred from the claim text.