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Straight Locking Assemblies
Belts, Sheaves and Pulleys (Fenner Drives)
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 |
|---|---|---|---|---|---|
| BCH202212-045 /Asset/BCH_20.jpg | N/A BCH20 2.75" M6 x 45 | Screw Size N/A M6 x 45 | Torque [Max] N/A 1617 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 4.724 in |
| BCH202214-035 /Asset/BCH_20.jpg | N/A BCH20 2.875" M6 x 35 | Screw Size N/A M6 x 35 | Torque [Max] N/A 1617 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 4.724 in |
| BCH202214-045 /Asset/BCH_20.jpg | N/A BCH20 2.875" M6 x 45 | Screw Size N/A M6 x 45 | Torque [Max] N/A 1617 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 4.724 in |
| BCH202215-035 /Asset/BCH_20.jpg | N/A BCH20 2.9375" M6 x 35 | Screw Size N/A M6 x 35 | Torque [Max] N/A 1617 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 4.724 in |
| BCH202215-045 /Asset/BCH_20.jpg | N/A BCH20 2.9375" M6 x 45 | Screw Size N/A M6 x 45 | Torque [Max] N/A 1617 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 4.724 in |
| BCH202300-035 /Asset/BCH_20.jpg | N/A BCH20 3" M6 x 35 | Screw Size N/A M6 x 35 | Torque [Max] N/A 1617 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 4.724 in |
| BCH202300-045 /Asset/BCH_20.jpg | N/A BCH20 3" M6 x 45 | Screw Size N/A M6 x 45 | Torque [Max] N/A 1617 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 4.724 in |
| BCH501012-020 /Asset/BCH_50.jpg | N/A BCH50 12 mm M5 x 20 | Screw Size N/A M5 x 20 | Torque [Max] N/A 132 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 47.000 mm |
| BCH501012-025 /Asset/BCH_50.jpg | N/A BCH50 12 mm M5 x 25 | Screw Size N/A M5 x 25 | Torque [Max] N/A 132 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 47.000 mm |
| BCH501014-020 /Asset/BCH_50.jpg | N/A BCH50 14 mm M5 x 20 | Screw Size N/A M5 x 20 | Torque [Max] N/A 155 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 47.000 mm |
| BCH501014-025 /Asset/BCH_50.jpg | N/A BCH50 14 mm M5 x 25 | Screw Size N/A M5 x 25 | Torque [Max] N/A 155 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 47.000 mm |
| BCH501015-020 /Asset/BCH_50.jpg | N/A BCH50 15 mm M5 x 20 | Screw Size N/A M5 x 20 | Torque [Max] N/A 166 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 47.000 mm |
| BCH501015-025 /Asset/BCH_50.jpg | N/A BCH50 15 mm M5 x 25 | Screw Size N/A M5 x 25 | Torque [Max] N/A 166 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 47.000 mm |
| BCH501018-020 /Asset/BCH_50.jpg | N/A BCH50 18 mm M5 x 20 | Screw Size N/A M5 x 20 | Torque [Max] N/A 239 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 52.000 mm |
| BCH501018-025 /Asset/BCH_50.jpg | N/A BCH50 18 mm M5 x 25 | Screw Size N/A M5 x 25 | Torque [Max] N/A 239 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 52.000 mm |
| BCH501019-020 /Asset/BCH_50.jpg | N/A BCH50 19 mm M5 x 20 | Screw Size N/A M5 x 20 | Torque [Max] N/A 252 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 52.000 mm |
| BCH501019-025 /Asset/BCH_50.jpg | N/A BCH50 19 mm M5 x 25 | Screw Size N/A M5 x 25 | Torque [Max] N/A 252 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 52.000 mm |
| BCH501020-020 /Asset/BCH_50.jpg | N/A BCH50 20 mm M5 x 20 | Screw Size N/A M5 x 20 | Torque [Max] N/A 265 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 52.000 mm |
| BCH501020-025 /Asset/BCH_50.jpg | N/A BCH50 20 mm M5 x 25 | Screw Size N/A M5 x 25 | Torque [Max] N/A 265 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 52.000 mm |
| BCH501022-025 /Asset/BCH_50.jpg | N/A BCH50 22 mm M5 x 25 | Screw Size N/A M5 x 25 | Torque [Max] N/A 302 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 58.000 mm |
| BCH501022-030 /Asset/BCH_50.jpg | N/A BCH50 22 mm M5 x 30 | Screw Size N/A M5 x 30 | Torque [Max] N/A 302 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 58.000 mm |
| BCH501024-025 /Asset/BCH_50.jpg | N/A BCH50 24 mm M5 x 25 | Screw Size N/A M5 x 25 | Torque [Max] N/A 329 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 58.000 mm |
| BCH501024-030 /Asset/BCH_50.jpg | N/A BCH50 24 mm M5 x 30 | Screw Size N/A M5 x 30 | Torque [Max] N/A 329 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 58.000 mm |
| BCH501025-025 /Asset/BCH_50.jpg | N/A BCH50 25 mm M5 x 25 | Screw Size N/A M5 x 25 | Torque [Max] N/A 342 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 58.000 mm |
| BCH501025-030 /Asset/BCH_50.jpg | N/A BCH50 25 mm M5 x 30 | Screw Size N/A M5 x 30 | Torque [Max] N/A 342 N·m | Tightening Torque N/A 10 N·m | Outside Diameter N/A 58.000 mm |
