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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 |
|---|---|---|---|---|---|
| T121180 | N/A B-LOC B112 180 mm x 235 mm | Screw Size N/A M16 x 110 | Torque [Max] N/A 124230 N·m | Tightening Torque N/A 348 N·m | Outside Diameter N/A 235 mm |
| T121190 | N/A B-LOC B112 190 mm x 250 mm | Screw Size N/A M16 x 110 | Torque [Max] N/A 139873 N·m | Tightening Torque N/A 348 N·m | Outside Diameter N/A 250.000 mm |
| T122102 | N/A B-LOC B112 1.125" | Screw Size N/A M6 x 35 | Torque [Max] N/A 675 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 2.165 in |
| T122111 | N/A B-LOC B112 1.6875" | Screw Size N/A M8 x 50 | Torque [Max] N/A 2263 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 2.953 in |
| T122211 | N/A B-LOC B112 2.6875" | Screw Size N/A M10 x 60 | Torque [Max] N/A 8349 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 4.331 in |
| T122302 | N/A B-LOC B112 3.125" | Screw Size N/A M10 x 60 | Torque [Max] N/A 10679 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 4.724 in |
| T122310 | N/A B-LOC B112 3.625" | Screw Size N/A M10 x 60 | Torque [Max] N/A 13514 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 5.118 in |
| T122315 | N/A B-LOC B112 3.9375" | Screw Size N/A M12 x 80 | Torque [Max] N/A 20130 lb·ft | Tightening Torque N/A 105 lb·ft | Outside Diameter N/A 5.709 in |
| T122404 | N/A B-LOC B112 4.25" | Screw Size N/A M12 x 80 | Torque [Max] N/A 23703 lb·ft | Tightening Torque N/A 105 lb·ft | Outside Diameter N/A 6.102 in |
| T122406 | N/A B-LOC B112 4.375" | Screw Size N/A M12 x 80 | Torque [Max] N/A 24400 lb·ft | Tightening Torque N/A 105 lb·ft | Outside Diameter N/A 6.102 in |
| T122412 | N/A B-LOC B112 4.75" | Screw Size N/A M12 x 80 | Torque [Max] N/A 30907 lb·ft | Tightening Torque N/A 105 lb·ft | Outside Diameter N/A 6.496 in |
| T122508 | N/A B-LOC B112 5.5" | Screw Size N/A M14 x 90 | Torque [Max] N/A 48704 lb·ft | Tightening Torque N/A 166 lb·ft | Outside Diameter N/A 7.480 in |
| T122512 | N/A B-LOC B112 5.75" | Screw Size N/A M14 x 90 | Torque [Max] N/A 54555 lb·ft | Tightening Torque N/A 166 lb·ft | Outside Diameter N/A 7.874 in |
| T122607 | N/A B-LOC B112 6.4375" | Screw Size N/A M16 x 110 | Torque [Max] N/A 77782 lb·ft | Tightening Torque N/A 257 lb·ft | Outside Diameter N/A 8.858 in |
| T122608 | N/A B-LOC B112 6.5" | Screw Size N/A M16 x 110 | Torque [Max] N/A 78537 lb·ft | Tightening Torque N/A 257 lb·ft | Outside Diameter N/A 8.858 in |
| T122704 | N/A B-LOC B112 7.25" | Screw Size N/A M16 x 110 | Torque [Max] N/A 100113 lb·ft | Tightening Torque N/A 257 lb·ft | Outside Diameter N/A 9.843 in |
| T122707 | N/A B-LOC B112 7.4375" | Screw Size N/A M16 x 110 | Torque [Max] N/A 102702 lb·ft | Tightening Torque N/A 257 lb·ft | Outside Diameter N/A 9.843 in |
| T122708 | N/A B-LOC B112 7.5" | Screw Size N/A M16 x 110 | Torque [Max] N/A 103565 lb·ft | Tightening Torque N/A 257 lb·ft | Outside Diameter N/A 9.843 in |
| T122712 | N/A B-LOC B112 7.75" | Screw Size N/A M16 x 110 | Torque [Max] N/A 107017 lb·ft | Tightening Torque N/A 257 lb·ft | Outside Diameter N/A 10.236 in |
| T122715 | N/A B-LOC B112 7.9375" | Screw Size N/A M16 x 110 | Torque [Max] N/A 109606 lb·ft | Tightening Torque N/A 257 lb·ft | Outside Diameter N/A 10.236 in |
| T122800 | N/A B-LOC B112 8" | Screw Size N/A M16 x 110 | Torque [Max] N/A 110469 lb·ft | Tightening Torque N/A 257 lb·ft | Outside Diameter N/A 10.236 in |
| T151080 | N/A B-LOC B115 80 mm x 120 mm | Screw Size N/A M10 x 50 | Torque [Max] N/A 10168 N·m | Tightening Torque N/A 81 N·m | Outside Diameter N/A 120.000 mm |
| T151090 | N/A B-LOC B115 90 mm x 130 mm | Screw Size N/A M10 x 50 | Torque [Max] N/A 12583 N·m | Tightening Torque N/A 81 N·m | Outside Diameter N/A 130 mm |
| T151110 | N/A B-LOC B115 110 mm x 155 mm | Screw Size N/A M12 x 60 | Torque [Max] N/A 20953 N·m | Tightening Torque N/A 142 N·m | Outside Diameter N/A 155 mm |
| T151130 | N/A B-LOC B115 130 mm x 180 mm | Screw Size N/A M12 x 70 | Torque [Max] N/A 34668 N·m | Tightening Torque N/A 142 N·m | Outside Diameter N/A 180 mm |
