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Bunting “BU” Dry Lubricant
Bearings

Bunting’s “BU” product is a composite material, consisting of bonded layers of a steel backing and a porous bronze matrix, impregnated and overlaid with PTFE bearing material. The steel backing provides mechanical strength and the bronze inter-layer, impregnated with PTFE, provides a strong mechanical bond for the lining. During normal operation, a thin film from the PTFE lining is transferred to the opposing surface and maintained there throughout the working
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Unit of Measure

Specifications

Stock Item?1 Yes

Nominal Size I.D.

3/16 in

Nominal Size O.D.

1/4 in

Recommended Housing Bore Min.

0.2497 in

Recommended Housing Bore Max.

0.2503 in

Recommended Shaft Size Min.

0.1858 in

Recommended Shaft Size Max.

0.1865 in

Length

3/16 in

Length Tolerance

+/-0.015 in

Installed Bearing I.D. Min.

0.1867 in

Installed Bearing I.D. Max.

0.1893 in

Min. Temperature

-328 ºF

Max. Temperature

536 ºF

P Value (Max.)

36250

V Value (Max.)

1000

PV Value (Max.)

51000
  • 1 Minimum quantities may apply to non-stock items, please contact customer service for more information.