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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 |
|---|---|---|---|---|---|
| B302115 | N/A B-LOC B103 1.9375" | Screw Size N/A M8 x 25 | Torque [Max] N/A 1716 lb·ft | Tightening Torque N/A 25 lb·ft | Outside Diameter N/A 3.150 in |
| B302200 | N/A B-LOC B103 2" | Screw Size N/A M8 x 25 | Torque [Max] N/A 1771 lb·ft | Tightening Torque N/A 25 lb·ft | Outside Diameter N/A 3.150 in |
| B302203 | N/A B-LOC B103 2.1875" | Screw Size N/A M8 x 25 | Torque [Max] N/A 2214 lb·ft | Tightening Torque N/A 25 lb·ft | Outside Diameter N/A 3.346 in |
| B302204 | N/A B-LOC B103 2.25" | Screw Size N/A M8 x 25 | Torque [Max] N/A 2277 lb·ft | Tightening Torque N/A 25 lb·ft | Outside Diameter N/A 3.543 in |
| B302207 | N/A B-LOC B103 2.4375" | Screw Size N/A M8 x 25 | Torque [Max] N/A 2775 lb·ft | Tightening Torque N/A 25 lb·ft | Outside Diameter N/A 3.740 in |
| B302208 | N/A B-LOC B103 2.5" | Screw Size N/A M8 x 25 | Torque [Max] N/A 2846 lb·ft | Tightening Torque N/A 25 lb·ft | Outside Diameter N/A 3.740 in |
| B302215 | N/A B-LOC B103 2.9375" | Screw Size N/A M10 x 30 | Torque [Max] N/A 4821 lb·ft | Tightening Torque N/A 50 lb·ft | Outside Diameter N/A 4.528 in |
| B302300 | N/A B-LOC B103 3" | Screw Size N/A M10 x 30 | Torque [Max] N/A 4923 lb·ft | Tightening Torque N/A 50 lb·ft | Outside Diameter N/A 4.724 in |
| B302307 | N/A B-LOC B103 3.4375" | Screw Size N/A M10 x 30 | Torque [Max] N/A 6347 lb·ft | Tightening Torque N/A 50 lb·ft | Outside Diameter N/A 5.118 in |
| B401020 | N/A B-LOC B400 20 mm x 47 mm | Screw Size N/A M6 x 18 | Torque [Max] N/A 335 N·m | Tightening Torque N/A 15 N·m | Outside Diameter N/A 47.000 mm |
| B401024 | N/A B-LOC B400 24 mm x 50 mm | Screw Size N/A M6 x 18 | Torque [Max] N/A 453 N·m | Tightening Torque N/A 15 N·m | Outside Diameter N/A 50 mm |
| B401025 | N/A B-LOC B400 25 mm x 50 mm | Screw Size N/A M6 x 18 | Torque [Max] N/A 472 N·m | Tightening Torque N/A 15 N·m | Outside Diameter N/A 50 mm |
| B401028 | N/A B-LOC B400 28 mm x 55 mm | Screw Size N/A M6 x 18 | Torque [Max] N/A 587 N·m | Tightening Torque N/A 15 N·m | Outside Diameter N/A 55.000 mm |
| B401030 | N/A B-LOC B400 30 mm x 55 mm | Screw Size N/A M6 x 18 | Torque [Max] N/A 629 N·m | Tightening Torque N/A 15 N·m | Outside Diameter N/A 55.000 mm |
| B401032 | N/A B-LOC B400 32 mm x 60 mm | Screw Size N/A M6 x 18 | Torque [Max] N/A 806 N·m | Tightening Torque N/A 15 N·m | Outside Diameter N/A 60 mm |
| B401035 | N/A B-LOC B400 35 mm x 60 mm | Screw Size N/A M6 x 18 | Torque [Max] N/A 881 N·m | Tightening Torque N/A 15 N·m | Outside Diameter N/A 60 mm |
| B401038 | N/A B-LOC B400 38 mm x 65 mm | Screw Size N/A M6 x 18 | Torque [Max] N/A 1116 N·m | Tightening Torque N/A 15 N·m | Outside Diameter N/A 65.000 mm |
| B401040 | N/A B-LOC B400 40 mm x 65 mm | Screw Size N/A M6 x 18 | Torque [Max] N/A 1175 N·m | Tightening Torque N/A 15 N·m | Outside Diameter N/A 65.000 mm |
| B401042 | N/A B-LOC B400 42 mm x 75 mm | Screw Size N/A M8 x 22 | Torque [Max] N/A 1892 N·m | Tightening Torque N/A 35 N·m | Outside Diameter N/A 75.000 mm |
| B401045 | N/A B-LOC B400 45 mm x 75 mm | Screw Size N/A M8 x 22 | Torque [Max] N/A 2027 N·m | Tightening Torque N/A 35 N·m | Outside Diameter N/A 75.000 mm |
| B401050 | N/A B-LOC B400 50 mm x 80 mm | Screw Size N/A M8 x 22 | Torque [Max] N/A 2252 N·m | Tightening Torque N/A 35 N·m | Outside Diameter N/A 80 mm |
| B401055 | N/A B-LOC B400 55 mm x 85 mm | Screw Size N/A M8 x 22 | Torque [Max] N/A 2889 N·m | Tightening Torque N/A 35 N·m | Outside Diameter N/A 85 mm |
| B401060 | N/A B-LOC B400 60 mm x 90 mm | Screw Size N/A M8 x 22 | Torque [Max] N/A 3152 N·m | Tightening Torque N/A 35 N·m | Outside Diameter N/A 90.000 mm |
| B401065 | N/A B-LOC B400 65 mm x 95 mm | Screw Size N/A M8 x 22 | Torque [Max] N/A 3903 N·m | Tightening Torque N/A 35 N·m | Outside Diameter N/A 95 mm |
| B401070 | N/A B-LOC B400 70 mm x 110 mm | Screw Size N/A M10 x 25 | Torque [Max] N/A 5880 N·m | Tightening Torque N/A 69 N·m | Outside Diameter N/A 110.000 mm |
