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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 |
|---|---|---|---|---|---|
| BCH502207-050 | N/A BCH50 2.4375" M10 x 50 | Screw Size N/A M10 x 50 | Torque [Max] N/A 3464 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 5.433 in |
| BCH502208-040 | N/A BCH50 2.5" M10 x 40 | Screw Size N/A M10 x 40 | Torque [Max] N/A 3553 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 5.433 in |
| BCH502208-050 | N/A BCH50 2.5" M10 x 50 | Screw Size N/A M10 x 50 | Torque [Max] N/A 3553 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 5.433 in |
| BCH502209-040 | N/A BCH50 2.5625" M10 x 40 | Screw Size N/A M10 x 40 | Torque [Max] N/A 3642 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 5.433 in |
| BCH502209-050 | N/A BCH50 2.5625" M10 x 50 | Screw Size N/A M10 x 50 | Torque [Max] N/A 3642 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 5.433 in |
| BCH502210-040 | N/A BCH50 2.625" M10 x 40 | Screw Size N/A M10 x 40 | Torque [Max] N/A 4197 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 6.142 in |
| BCH502210-050 | N/A BCH50 2.625" M10 x 50 | Screw Size N/A M10 x 50 | Torque [Max] N/A 4197 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 6.142 in |
| BCH502212-040 | N/A BCH50 2.75" M10 x 40 | Screw Size N/A M10 x 40 | Torque [Max] N/A 4396 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 6.142 in |
| BCH502212-050 | N/A BCH50 2.75" M10 x 50 | Screw Size N/A M10 x 50 | Torque [Max] N/A 4396 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 6.142 in |
| BCH502214-040 | N/A BCH50 2.875" M10 x 40 | Screw Size N/A M10 x 40 | Torque [Max] N/A 4596 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 6.142 in |
| BCH502214-050 | N/A BCH50 2.875" M10 x 50 | Screw Size N/A M10 x 50 | Torque [Max] N/A 4596 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 6.142 in |
| BCH502215-040 | N/A BCH50 2.9375" M10 x 40 | Screw Size N/A M10 x 40 | Torque [Max] N/A 4696 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 6.142 in |
| BCH502215-050 | N/A BCH50 2.9375" M10 x 50 | Screw Size N/A M10 x 50 | Torque [Max] N/A 4696 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 6.142 in |
| BCH502300-040 | N/A BCH50 3" M10 x 40 | Screw Size N/A M10 x 40 | Torque [Max] N/A 4796 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 6.142 in |
| BCH502300-050 | N/A BCH50 3" M10 x 50 | Screw Size N/A M10 x 50 | Torque [Max] N/A 4796 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 6.142 in |
| T121024 | N/A B-LOC B112 24 mm x 55 mm | Screw Size N/A M6 x 35 | Torque [Max] N/A 755 N·m | Tightening Torque N/A 16 N·m | Outside Diameter N/A 55.000 mm |
| T121028 | N/A B-LOC B112 28 mm x 55 mm | Screw Size N/A M6 x 35 | Torque [Max] N/A 881 N·m | Tightening Torque N/A 16 N·m | Outside Diameter N/A 55.000 mm |
| T121032 | N/A B-LOC B112 32 mm x 60 mm | Screw Size N/A M6 x 45 | Torque [Max] N/A 1175 N·m | Tightening Torque N/A 16 N·m | Outside Diameter N/A 60 mm |
| T121038 | N/A B-LOC B112 38 mm x 75 mm | Screw Size N/A M8 x 50 | Torque [Max] N/A 2742 N·m | Tightening Torque N/A 41 N·m | Outside Diameter N/A 75.000 mm |
| T121042 | N/A B-LOC B112 42 mm x 75 mm | Screw Size N/A M8 x 50 | Torque [Max] N/A 3030 N·m | Tightening Torque N/A 41 N·m | Outside Diameter N/A 75.000 mm |
| T121048 | N/A B-LOC B112 48 mm x 80 mm | Screw Size N/A M8 x 55 | Torque [Max] N/A 3958 N·m | Tightening Torque N/A 41 N·m | Outside Diameter N/A 80 mm |
| T121075 | N/A B-LOC B112 75 mm x 115 mm | Screw Size N/A M10 x 60 | Torque [Max] N/A 12384 N·m | Tightening Torque N/A 81 N·m | Outside Diameter N/A 115 mm |
| T121085 | N/A B-LOC B112 85 mm x 125 mm | Screw Size N/A M10 x 60 | Torque [Max] N/A 15439 N·m | Tightening Torque N/A 81 N·m | Outside Diameter N/A 125 mm |
| T121095 | N/A B-LOC B112 95 mm x 135 mm | Screw Size N/A M10 x 60 | Torque [Max] N/A 18824 N·m | Tightening Torque N/A 81 N·m | Outside Diameter N/A 135 mm |
| T121170 | N/A B-LOC B112 170 mm x 225 mm | Screw Size N/A M16 x 110 | Torque [Max] N/A 109506 N·m | Tightening Torque N/A 348 N·m | Outside Diameter N/A 225.000 mm |
