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First Bronze "BU" Dry Lubricant
Bearings

First Bronze'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.

First Bronze'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 ºF/+536 ºF
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Item #

Nominal Size I.D.

Nominal Size O.D.

Recommended Housing Bore Min.

Recommended Housing Bore Max.

Recommended Shaft Size Min.

Recommended Shaft Size Max.

Length

List Price

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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 0.1243 in N/A 3/16 in QUOTE Add To Cart
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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 0.1865 in N/A 3/16 in QUOTE Add To Cart
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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 0.1865 in N/A 1/4 in $1.93 Add To Cart
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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 0.1865 in N/A 1/2 in QUOTE Add To Cart
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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 0.2490 in N/A 1/4 in $2.01 Add To Cart
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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 0.2490 in N/A 3/8 in $2.09 Add To Cart
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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 0.3115 in N/A 3/8 in $2.42 Add To Cart
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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 0.3115 in N/A 1/2 in QUOTE Add To Cart
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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 0.3740 in N/A 1/4 in QUOTE Add To Cart
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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 0.3740 in N/A 3/8 in QUOTE Add To Cart
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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 0.3740 in N/A 1/2 in $2.90 Add To Cart
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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 0.3740 in N/A 5/8 in QUOTE Add To Cart
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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 0.3740 in N/A 3/4 in $3.06 Add To Cart
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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 0.4365 in N/A 1/2 in QUOTE Add To Cart
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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 0.4365 in N/A 3/4 in QUOTE Add To Cart
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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 0.4990 in N/A 1/4 in $2.33 Add To Cart
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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 0.4990 in N/A 3/8 in $2.82 Add To Cart
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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 0.4990 in N/A 1/2 in $3.06 Add To Cart
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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 0.4990 in N/A 5/8 in $3.14 Add To Cart
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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 0.4990 in N/A 3/4 in $3.46 Add To Cart
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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 0.4990 in N/A 7/8 in QUOTE Add To Cart
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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 0.5615 in N/A 1/2 in QUOTE Add To Cart
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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 0.5615 in N/A 3/4 in QUOTE Add To Cart
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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 0.6240 in N/A 1/2 in $3.22 Add To Cart
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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 0.6240 in N/A 5/8 in QUOTE Add To Cart
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