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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 |
|---|---|---|---|---|---|
| B121025 | N/A B-LOC B112 25 mm x 55 mm | Screw Size N/A M6 x 35 | Torque [Max] N/A 787 N·m | Tightening Torque N/A 16 N·m | Outside Diameter N/A 55.000 mm |
| B121030 | N/A B-LOC B112 30 mm x 55 mm | Screw Size N/A M6 x 35 | Torque [Max] N/A 944 N·m | Tightening Torque N/A 16 N·m | Outside Diameter N/A 55.000 mm |
| B121035 | N/A B-LOC B112 35 mm x 60 mm | Screw Size N/A M6 x 45 | Torque [Max] N/A 1285 N·m | Tightening Torque N/A 16 N·m | Outside Diameter N/A 60 mm |
| B121040 | N/A B-LOC B112 40 mm x 75 mm | Screw Size N/A M8 x 50 | Torque [Max] N/A 2886 N·m | Tightening Torque N/A 41 N·m | Outside Diameter N/A 75.000 mm |
| B121045 | N/A B-LOC B112 45 mm x 75 mm | Screw Size N/A M8 x 50 | Torque [Max] N/A 3247 N·m | Tightening Torque N/A 41 N·m | Outside Diameter N/A 75.000 mm |
| B121050 | N/A B-LOC B112 50 mm x 80 mm | Screw Size N/A M8 x 55 | Torque [Max] N/A 4123 N·m | Tightening Torque N/A 41 N·m | Outside Diameter N/A 80 mm |
| B121055 | N/A B-LOC B112 55 mm x 85 mm | Screw Size N/A M8 x 55 | Torque [Max] N/A 5102 N·m | Tightening Torque N/A 41 N·m | Outside Diameter N/A 85 mm |
| B121060 | N/A B-LOC B112 60 mm x 90 mm | Screw Size N/A M8 x 55 | Torque [Max] N/A 6184 N·m | Tightening Torque N/A 41 N·m | Outside Diameter N/A 90.000 mm |
| B121065 | N/A B-LOC B112 65 mm x 95 mm | Screw Size N/A M8 x 55 | Torque [Max] N/A 6700 N·m | Tightening Torque N/A 41 N·m | Outside Diameter N/A 95 mm |
| B121070 | N/A B-LOC B112 70 mm x 110 mm | Screw Size N/A M10 x 60 | Torque [Max] N/A 11559 N·m | Tightening Torque N/A 81 N·m | Outside Diameter N/A 110.000 mm |
| B121080 | N/A B-LOC B112 80 mm x 120 mm | Screw Size N/A M10 x 60 | Torque [Max] N/A 14531 N·m | Tightening Torque N/A 81 N·m | Outside Diameter N/A 120.000 mm |
| B121090 | N/A B-LOC B112 90 mm x 130 mm | Screw Size N/A M10 x 60 | Torque [Max] N/A 17834 N·m | Tightening Torque N/A 81 N·m | Outside Diameter N/A 130 mm |
| B121100 | N/A B-LOC B112 100 mm x 145 mm | Screw Size N/A M12 x 80 | Torque [Max] N/A 27222 N·m | Tightening Torque N/A 142 N·m | Outside Diameter N/A 145.000 mm |
| B121110 | N/A B-LOC B112 110 mm x 155 mm | Screw Size N/A M12 x 80 | Torque [Max] N/A 32666 N·m | Tightening Torque N/A 142 N·m | Outside Diameter N/A 155 mm |
| B121120 | N/A B-LOC B112 120 mm x 165 mm | Screw Size N/A M12 x 80 | Torque [Max] N/A 41575 N·m | Tightening Torque N/A 142 N·m | Outside Diameter N/A 165 mm |
| B121130 | N/A B-LOC B112 130 mm x 180 mm | Screw Size N/A M14 x 90 | Torque [Max] N/A 52658 N·m | Tightening Torque N/A 225 N·m | Outside Diameter N/A 180 mm |
| B121140 | N/A B-LOC B112 140 mm x 190 mm | Screw Size N/A M14 x 90 | Torque [Max] N/A 66159 N·m | Tightening Torque N/A 225 N·m | Outside Diameter N/A 190 mm |
| B121150 | N/A B-LOC B112 150 mm x 200 mm | Screw Size N/A M14 x 90 | Torque [Max] N/A 75948 N·m | Tightening Torque N/A 225 N·m | Outside Diameter N/A 200.000 mm |
| B121160 | N/A B-LOC B112 160 mm x 210 mm | Screw Size N/A M14 x 90 | Torque [Max] N/A 86412 N·m | Tightening Torque N/A 225 N·m | Outside Diameter N/A 210.000 mm |
| B121200 | N/A B-LOC B112 200 mm x 260 mm | Screw Size N/A M16 x 110 | Torque [Max] N/A 147235 N·m | Tightening Torque N/A 348 N·m | Outside Diameter N/A 260.000 mm |
| B122100 | N/A B-LOC B112 1" | Screw Size N/A M6 x 35 | Torque [Max] N/A 600 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 2.165 in |
| B122103 | N/A B-LOC B112 1.1875" | Screw Size N/A M6 x 35 | Torque [Max] N/A 712 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 2.165 in |
| B122104 | N/A B-LOC B112 1.25" | Screw Size N/A M6 x 45 | Torque [Max] N/A 874 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 2.362 in |
| B122106 | N/A B-LOC B112 1.4375" | Screw Size N/A M6 x 45 | Torque [Max] N/A 962 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 2.362 in |
| B122107 | N/A B-LOC B112 1.4375" | Screw Size N/A M6 x 45 | Torque [Max] N/A 1006 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 2.362 in |
