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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 |
|---|---|---|---|---|---|
| B122407 | N/A B-LOC B112 4.4375" | Screw Size N/A M12 x 80 | Torque [Max] N/A 28874 lb·ft | Tightening Torque N/A 105 lb·ft | Outside Diameter N/A 6.496 in |
| B122408 | N/A B-LOC B112 4.5" | Screw Size N/A M12 x 80 | Torque [Max] N/A 29280 lb·ft | Tightening Torque N/A 105 lb·ft | Outside Diameter N/A 6.496 in |
| B122415 | N/A B-LOC B112 4.9375" | Screw Size N/A M14 x 90 | Torque [Max] N/A 37477 lb·ft | Tightening Torque N/A 166 lb·ft | Outside Diameter N/A 7.087 in |
| B122500 | N/A B-LOC B112 5" | Screw Size N/A M14 x 90 | Torque [Max] N/A 37952 lb·ft | Tightening Torque N/A 166 lb·ft | Outside Diameter N/A 7.087 in |
| B122504 | N/A B-LOC B112 5.25" | Screw Size N/A M14 x 90 | Torque [Max] N/A 46491 lb·ft | Tightening Torque N/A 166 lb·ft | Outside Diameter N/A 7.480 in |
| B122507 | N/A B-LOC B112 5.4375" | Screw Size N/A M14 x 90 | Torque [Max] N/A 48151 lb·ft | Tightening Torque N/A 166 lb·ft | Outside Diameter N/A 7.480 in |
| B122515 | N/A B-LOC B112 5.9375" | Screw Size N/A M14 x 90 | Torque [Max] N/A 56334 lb·ft | Tightening Torque N/A 166 lb·ft | Outside Diameter N/A 7.874 in |
| B122600 | N/A B-LOC B112 6" | Screw Size N/A M14 x 90 | Torque [Max] N/A 60722 lb·ft | Tightening Torque N/A 166 lb·ft | Outside Diameter N/A 8.268 in |
| B122615 | N/A B-LOC B112 6.9375" | Screw Size N/A M16 x 110 | Torque [Max] N/A 89810 lb·ft | Tightening Torque N/A 257 lb·ft | Outside Diameter N/A 9.252 in |
| B122700 | N/A B-LOC B112 7" | Screw Size N/A M16 x 110 | Torque [Max] N/A 90619 lb·ft | Tightening Torque N/A 257 lb·ft | Outside Diameter N/A 9.252 in |
| B151070 | N/A B-LOC B115 70 mm x 110 mm | Screw Size N/A M10 x 50 | Torque [Max] N/A 7118 N·m | Tightening Torque N/A 81 N·m | Outside Diameter N/A 110.000 mm |
| B151100 | N/A B-LOC B115 100 mm x 145 mm | Screw Size N/A M12 x 60 | Torque [Max] N/A 19048 N·m | Tightening Torque N/A 142 N·m | Outside Diameter N/A 145.000 mm |
| B151120 | N/A B-LOC B115 120 mm x 165 mm | Screw Size N/A M12 x 60 | Torque [Max] N/A 25144 N·m | Tightening Torque N/A 142 N·m | Outside Diameter N/A 165 mm |
| B151140 | N/A B-LOC B115 140 mm x 190 mm | Screw Size N/A M12 x 70 | Torque [Max] N/A 40001 N·m | Tightening Torque N/A 142 N·m | Outside Diameter N/A 190 mm |
| B151150 | N/A B-LOC B115 150 mm x 200 mm | Screw Size N/A M12 x 70 | Torque [Max] N/A 42859 N·m | Tightening Torque N/A 142 N·m | Outside Diameter N/A 200.000 mm |
| B151170 | N/A B-LOC B115 170 mm x 225 mm | Screw Size N/A M14 x 80 | Torque [Max] N/A 66254 N·m | Tightening Torque N/A 225 N·m | Outside Diameter N/A 225.000 mm |
| B151180 | N/A B-LOC B115 180 mm x 235 mm | Screw Size N/A M14 x 80 | Torque [Max] N/A 70151 N·m | Tightening Torque N/A 225 N·m | Outside Diameter N/A 235 mm |
| B151190 | N/A B-LOC B115 190 mm x 250 mm | Screw Size N/A M14 x 80 | Torque [Max] N/A 78985 N·m | Tightening Torque N/A 225 N·m | Outside Diameter N/A 250.000 mm |
| B151200 | N/A B-LOC B115 200 mm x 260 mm | Screw Size N/A M14 x 80 | Torque [Max] N/A 93535 N·m | Tightening Torque N/A 225 N·m | Outside Diameter N/A 260.000 mm |
| B152212 | N/A B-LOC B115 2.75" | Screw Size N/A M10 x 50 | Torque [Max] N/A 5261 N·m | Tightening Torque N/A 60 N·m | Outside Diameter N/A 4.331 in |
| B152215 | N/A B-LOC B115 2.9375" | Screw Size N/A M10 x 50 | Torque [Max] N/A 5620 N·m | Tightening Torque N/A 60 N·m | Outside Diameter N/A 4.528 in |
| B152308 | N/A B-LOC B115 3.5" | Screw Size N/A M10 x 50 | Torque [Max] N/A 9207 N·m | Tightening Torque N/A 60 N·m | Outside Diameter N/A 5.118 in |
| B152315 | N/A B-LOC B115 3.9375" | Screw Size N/A M12 x 60 | Torque [Max] N/A 14086 N·m | Tightening Torque N/A 105 N·m | Outside Diameter N/A 5.709 in |
| B152407 | N/A B-LOC B115 4.4375" | Screw Size N/A M12 x 60 | Torque [Max] N/A 17462 N·m | Tightening Torque N/A 105 N·m | Outside Diameter N/A 6.496 in |
| B152507 | N/A B-LOC B115 5.4375" | Screw Size N/A M12 x 70 | Torque [Max] N/A 29178 N·m | Tightening Torque N/A 105 N·m | Outside Diameter N/A 7.480 in |
