Mechanical & Drive
     Belts - B & BX Size



These pulleys have a fixed bore, 5/8"+ bore sizes have a keyway, models with hubs have a set screw.
Belts are available here.
For B & BX-Size Belts
Bore

Diameter (inch)
Approx.
Weight (lb)
P.D.
O.D.
2.75" 2.95"
1.3
3.0" 3.15"
1.5
3.25" 3.35"
1.6
3.5" 3.55"
1.7
3.625" 3.75"
2.0
3.75" 3.95"
2.1
4.0" 4.15"
2.1
4.25" 4.35"
2.3
4.5" 4.55"
2.6
3.0" 4.75"
2.1
4.75" 4.95"
2.5
5.0" 5.15"
2.6
5.25" 5.35"
2.7
5.5" 5.55"
3.0
5.625" 5.75"
3.1
5.75" 5.95"
3.2
6.0" 6.15"
4.2
6.25" 6.35"
4.7
6.5" 6.55"
3.2
6.625" 6.75"
4.4
6.75" 6.95"
4.5
7.0" 7.15"
4.1
7.5" 7.55"
4.2
7.625" 7.75"
4.7
8.0" 8.25"
4.8
8.4" 8.75"
4.8
9.4" 9.75"
5.2
11.0" 11.75"
7.5

 

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Bore Size Keyway
3/8, 7/16, 1/2, 9/16" none
5/8, 11/16, 3/4, 13/16, 7/8" 3/16 x 3/32"
15/16, 1, 1-1/16, 1-1/8, 1-3/16, 1-1/4, 1-15/16, 1-3/8" 5/16 x 5/32"
1-7/16, 1-1/2" 3/8 x 3/16"