WUHAN SPRING-BEARING INDUSTRIAL CO.,LTD

A wide variety of bearing types and design variations from Spring Bearing are available to meet the requirements of virtually all precision instrument applications. Bearing types include radial retainer, pivot, thrust, high speed radial, angular contact and full ball complement. Many selections also are available in both inch and metric dimensions.

 Open miniature ball bearings

 Open, with extended inner ring miniature ball bearings

 Shielded miniature ball bearings

 Shielded, with extended inner ring miniature ball bearings

 Sealed miniature ball bearings

 Sealed, with extended inner ring miniature ball bearings

 Flanged, open miniature ball bearings

 Flanged, open, with extended inner ring miniature ball bearings

 Flanged, shielded miniature ball bearings

 Flanged, shielded, with extended inner ring miniature ball bearings

 Flanged, sealed miniature ball bearings

 Flanged, sealed, with extended inner ring miniature ball bearings

 Miniature Thrust Bearings

 Miniature Plain Bearings

 Miniature Spherical Plain Bearings

 Miniature Bushings

 Miniature Roller Bearings

 Miniature Needle Bearings

 Miniature Linear Bearings

 Miniature Flanged Bearings

 Miniature Rod Ends

Miniature Ball Bearings are small bearings with balls as their rolling elements.  These small bearings have an outside diameter of less than ? (<9.525 mm) or are small bearings with an outside diameter less than or equal to ( 12.7 mm) having a ration of outside diameter to inside diameter equal to or less than two.

The term Instrument Ball Bearing is not limited to certain sizes, as with miniature ball bearings.  They are precision ball bearings with functional requirements which allow their use in the literal sense of the word.   The tolerances of instrument bearings are always ABEC-5 and higher.  Additionally, they must meet two or more of the following conditions: 

 Low or uniform starting or running torque

 Smooth operation or vibration limitations

 A definite contact angle or preload (or both)

 Meet high cleanliness standards

 Extended inner rings and flanged outer rings to facilitate mounting.

 Shields and seals for contamination protection.

 Radial play and contact angle variations to suit application loading and deflection requirements

 Various ball retainer styles and materials for optimum bearing performance.

 Factory lubrication from a stock of several hundred lubricants.

 Tolerance levels to exact application requirements.

 Ring and ball selection choices include AISI 440C stainless steel, SAE 52100 chrome steel, beryllium copper and ceramics.

 Performance testing for noise and friction torque specifications available.

 Medical and industrial handpieces

 Flow meters

 Fuel controls

 Gyros, synchros and servos

 Motors

 Cryogenic coolers

 Pulmonary assist devices