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Straight Locking Assemblies
Belts, Sheaves and Pulleys
The B-LOC brand is synonymous with world class quality, engineering excellence and unrivaled customer support. Fenner Drives B-LOC Keyless Bushings provide a high capacity, zero-backlash shaft-to-hub connection by using the simple wedge principle. An axial force is applied by series of annular screws to engage circular steel rings and mating tapers. The resulting wedge action creates a radial force on the tapered rings, one of which contracts to squeeze the shaft while the other expands and presses into the component bore.
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Series
Screw Size
Tightening Torque (lb·ft)
Tightening Torque (N·m)
Outside Diameter (in)
Outside Diameter (mm)
Bore Size (in)
Bore Size (mm)
Length Through Bore (in)
Length Through Bore (mm)
Item # |
Item Name |
Screw Size |
Torque [Max] |
Tightening Torque |
Outside Diameter |
|---|---|---|---|---|---|
| T302202 | N/A B-LOC B103 2.125" | Screw Size N/A M8 x 25 | Torque [Max] N/A 2150 lb·ft | Tightening Torque N/A 25 lb·ft | Outside Diameter N/A 3.346 in |
| T302206 | N/A B-LOC B103 2.375" | Screw Size N/A M8 x 25 | Torque [Max] N/A 2403 lb·ft | Tightening Torque N/A 25 lb·ft | Outside Diameter N/A 3.543 in |
| T302209 | N/A B-LOC B103 2.5625" | Screw Size N/A M8 x 25 | Torque [Max] N/A 2917 lb·ft | Tightening Torque N/A 25 lb·ft | Outside Diameter N/A 3.740 in |
| T302211 | N/A B-LOC B103 2.6875" | Screw Size N/A M10 x 30 | Torque [Max] N/A 4411 lb·ft | Tightening Torque N/A 50 lb·ft | Outside Diameter N/A 4.331 in |
| T302212 | N/A B-LOC B103 2.75" | Screw Size N/A M10 x 30 | Torque [Max] N/A 4513 lb·ft | Tightening Torque N/A 50 lb·ft | Outside Diameter N/A 4.331 in |
| T302214 | N/A B-LOC B103 2.875" | Screw Size N/A M10 x 30 | Torque [Max] N/A 4718 lb·ft | Tightening Torque N/A 50 lb·ft | Outside Diameter N/A 4.528 in |
| T302304 | N/A B-LOC B103 3.25" | Screw Size N/A M10 x 30 | Torque [Max] N/A 6000 lb·ft | Tightening Torque N/A 50 lb·ft | Outside Diameter N/A 4.921 in |
| T302306 | N/A B-LOC B103 3.375" | Screw Size N/A M10 x 30 | Torque [Max] N/A 6231 lb·ft | Tightening Torque N/A 50 lb·ft | Outside Diameter N/A 4.921 in |
| T302308 | N/A B-LOC B103 3.5" | Screw Size N/A M10 x 30 | Torque [Max] N/A 6462 lb·ft | Tightening Torque N/A 50 lb·ft | Outside Diameter N/A 5.118 in |
| T302312 | N/A B-LOC B103 3.75" | Screw Size N/A M10 x 30 | Torque [Max] N/A 7693 lb·ft | Tightening Torque N/A 50 lb·ft | Outside Diameter N/A 5.315 in |
| T302315 | N/A B-LOC B103 3.9375" | Screw Size N/A M12 x 35 | Torque [Max] N/A 9944 lb·ft | Tightening Torque N/A 90 lb·ft | Outside Diameter N/A 5.709 in |
| T302400 | N/A B-LOC B103 4" | Screw Size N/A M12 x 35 | Torque [Max] N/A 10101 lb·ft | Tightening Torque N/A 90 lb·ft | Outside Diameter N/A 5.709 in |
| T302407 | N/A B-LOC B103 4.4375" | Screw Size N/A M12 x 35 | Torque [Max] N/A 11206 lb·ft | Tightening Torque N/A 90 lb·ft | Outside Diameter N/A 6.102 in |
| T302412 | N/A B-LOC B103 4.75" | Screw Size N/A M12 x 35 | Torque [Max] N/A 13495 lb·ft | Tightening Torque N/A 90 lb·ft | Outside Diameter N/A 6.496 in |
| T302415 | N/A B-LOC B103 4.9375" | Screw Size N/A M14 x 40 | Torque [Max] N/A 18113 lb·ft | Tightening Torque N/A 135 lb·ft | Outside Diameter N/A 7.087 in |
| T302515 | N/A B-LOC B103 5.9375" | Screw Size N/A M14 x 40 | Torque [Max] N/A 24202 lb·ft | Tightening Torque N/A 135 lb·ft | Outside Diameter N/A 7.874 in |
| T302615 | N/A B-LOC B103 6.9375" | Screw Size N/A M14 x 40 | Torque [Max] N/A 33933 lb·ft | Tightening Torque N/A 135 lb·ft | Outside Diameter N/A 9.252 in |
| T401018 | N/A B-LOC B400 18 mm x 47 mm | Screw Size N/A M6 x 18 | Torque [Max] N/A 302 N·m | Tightening Torque N/A 15 N·m | Outside Diameter N/A 47.000 mm |
| T401022 | N/A B-LOC B400 22 mm x 47 mm | Screw Size N/A M6 x 18 | Torque [Max] N/A 369 N·m | Tightening Torque N/A 15 N·m | Outside Diameter N/A 47.000 mm |
| T401048 | N/A B-LOC B400 48 mm x 80 mm | Screw Size N/A M8 x 22 | Torque [Max] N/A 2162 N·m | Tightening Torque N/A 35 N·m | Outside Diameter N/A 80 mm |
| T401085 | N/A B-LOC B400 85 mm x 125 mm | Screw Size N/A M10 x 25 | Torque [Max] N/A 8158 N·m | Tightening Torque N/A 69 N·m | Outside Diameter N/A 125 mm |
| T401150 | N/A B-LOC B400 150 mm x 200 mm | Screw Size N/A M12 x 35 | Torque [Max] N/A 32917 N·m | Tightening Torque N/A 123 N·m | Outside Diameter N/A 200.000 mm |
| T402103 | N/A B-LOC B400 1.1875" | Screw Size N/A M6 x 18 | Torque [Max] N/A 464 lb·ft | Tightening Torque N/A 11 lb·ft | Outside Diameter N/A 2.159 in |
| T402106 | N/A B-LOC B400 1.375" | Screw Size N/A M6 x 18 | Torque [Max] N/A 645 lb·ft | Tightening Torque N/A 11 lb·ft | Outside Diameter N/A 2.365 in |
| T402206 | N/A B-LOC B400 2.375" | Screw Size N/A M8 x 22 | Torque [Max] N/A 2354 lb·ft | Tightening Torque N/A 26 lb·ft | Outside Diameter N/A 3.531 in |
