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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 life of the bearing.

Bunting’s “BU” is available, from stock, in the form of wrapped bearings in both inch and metric sizes. Thrust washers, strip material and non-standard bearing sizes are also available.

Temperature range: -328°F/+536°F
1 - 25 of 66 | Results Per Page | View | Unit of Measure
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Item #

Stock
Item?

Nom Size I.D

Nom Size O.D.

Recommended Housing
Bore Min.

Recommended Housing
Bore Max.

Recommended Shaft
Size Min.

Length

02BU03 N/A Yes N/A 1/8 in N/A 3/16 in N/A 0.1873 in N/A 0.1875 in N/A 0.1236 in N/A 3/16 in
03BU03 N/A Yes N/A 3/16 in N/A 1/4 in N/A 0.2497 in N/A 0.2503 in N/A 0.1858 in N/A 3/16 in
03BU04 N/A Yes N/A 3/16 in N/A 1/4 in N/A 0.2497 in N/A 0.2503 in N/A 0.1858 in N/A 1/4 in
03BU08 N/A Yes N/A 3/16 in N/A 1/4 in N/A 0.2497 in N/A 0.2503 in N/A 0.1858 in N/A 1/2 in
04BU04 N/A Yes N/A 1/4 in N/A 5/16 in N/A 0.3122 in N/A 0.3128 in N/A 0.2481 in N/A 1/4 in
04BU06 N/A Yes N/A 1/4 in N/A 5/16 in N/A 0.3122 in N/A 0.3128 in N/A 0.2481 in N/A 3/8 in
05BU06 N/A Yes N/A 5/16 in N/A 3/8 in N/A 0.3747 in N/A 0.3753 in N/A 0.3106 in N/A 3/8 in
05BU08 N/A Yes N/A 5/16 in N/A 3/8 in N/A 0.3747 in N/A 0.3753 in N/A 0.3106 in N/A 1/2 in
06BU04 N/A Yes N/A 3/8 in N/A 15/32 in N/A 0.4684 in N/A 0.4691 in N/A 0.3731 in N/A 1/4 in
06BU06 N/A Yes N/A 3/8 in N/A 15/32 in N/A 0.4684 in N/A 0.4691 in N/A 0.3731 in N/A 3/8 in
06BU08 N/A Yes N/A 3/8 in N/A 15/32 in N/A 0.4684 in N/A 0.4691 in N/A 0.3731 in N/A 1/2 in
06BU10 N/A Yes N/A 3/8 in N/A 15/32 in N/A 0.4684 in N/A 0.4691 in N/A 0.3731 in N/A 5/8 in
06BU12 N/A Yes N/A 3/8 in N/A 15/32 in N/A 0.4684 in N/A 0.4691 in N/A 0.3731 in N/A 3/4 in
07BU08 N/A Yes N/A 7/16 in N/A 17/32 in N/A 0.5309 in N/A 0.5316 in N/A 0.4355 in N/A 1/2 in
07BU12 N/A Yes N/A 7/16 in N/A 17/32 in N/A 0.5309 in N/A 0.5316 in N/A 0.4355 in N/A 3/4 in
08BU04 N/A Yes N/A 1/2 in N/A 19/32 in N/A 0.5934 in N/A 0.5941 in N/A 0.4980 in N/A 1/4 in
08BU06 N/A Yes N/A 1/2 in N/A 19/32 in N/A 0.5934 in N/A 0.5941 in N/A 0.4980 in N/A 3/8 in
08BU08 N/A Yes N/A 1/2 in N/A 19/32 in N/A 0.5934 in N/A 0.5941 in N/A 0.4980 in N/A 1/2 in
08BU10 N/A Yes N/A 1/2 in N/A 19/32 in N/A 0.5934 in N/A 0.5941 in N/A 0.4980 in N/A 5/8 in
08BU12 N/A Yes N/A 1/2 in N/A 19/32 in N/A 0.5934 in N/A 0.5941 in N/A 0.4980 in N/A 3/4 in
08BU14 N/A Yes N/A 1/2 in N/A 19/32 in N/A 0.5934 in N/A 0.5941 in N/A 0.4980 in N/A 7/8 in
09BU08 N/A Yes N/A 9/16 in N/A 21/32 in N/A 0.6559 in N/A 0.6566 in N/A 0.5605 in N/A 1/2 in
09BU12 N/A Yes N/A 9/16 in N/A 21/32 in N/A 0.6559 in N/A 0.6566 in N/A 0.5605 in N/A 3/4 in
10BU08 N/A Yes N/A 5/8 in N/A 23/32 in N/A 0.7184 in N/A 0.7192 in N/A 0.6230 in N/A 1/2 in
10BU10 N/A Yes N/A 5/8 in N/A 23/32 in N/A 0.7184 in N/A 0.7192 in N/A 0.6230 in N/A 5/8 in
1 - 25 of 66 | Results Per Page | View | Unit of Measure
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