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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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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 |
---|---|---|---|---|---|
BCH502107-030 /Asset/BCH_50.jpg | N/A BCH50 1.4375" M6 x 30 | Screw Size N/A M6 x 30 | Torque [Max] N/A 811 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 3.307 in |
BCH502107-035 /Asset/BCH_50.jpg | N/A BCH50 1.4375" M6 x 35 | Screw Size N/A M6 x 35 | Torque [Max] N/A 811 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 3.307 in |
BCH502108-030 /Asset/BCH_50.jpg | N/A BCH50 1.5" M6 x 30 | Screw Size N/A M6 x 30 | Torque [Max] N/A 846 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 3.307 in |
BCH502108-035 /Asset/BCH_50.jpg | N/A BCH50 1.5" M6 x 35 | Screw Size N/A M6 x 35 | Torque [Max] N/A 846 lb·ft | Tightening Torque N/A 12 lb·ft | Outside Diameter N/A 3.307 in |
BCH502110-035 /Asset/BCH_50.jpg | N/A BCH50 1.625" M8 x 35 | Screw Size N/A M8 x 35 | Torque [Max] N/A 1261 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 3.780 in |
BCH502110-045 /Asset/BCH_50.jpg | N/A BCH50 1.625" M8 x 45 | Screw Size N/A M8 x 45 | Torque [Max] N/A 1261 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 3.780 in |
BCH502111-035 /Asset/BCH_50.jpg | N/A BCH50 1.6875" M8 x 35 | Screw Size N/A M8 x 35 | Torque [Max] N/A 1310 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 3.780 in |
BCH502111-045 /Asset/BCH_50.jpg | N/A BCH50 1.6875" M8 x 45 | Screw Size N/A M8 x 45 | Torque [Max] N/A 1310 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 3.780 in |
BCH502112-035 /Asset/BCH_50.jpg | N/A BCH50 1.75" M8 x 35 | Screw Size N/A M8 x 35 | Torque [Max] N/A 1358 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 3.780 in |
BCH502112-045 /Asset/BCH_50.jpg | N/A BCH50 1.75" M8 x 45 | Screw Size N/A M8 x 45 | Torque [Max] N/A 1358 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 3.780 in |
BCH502114-035 /Asset/BCH_50.jpg | N/A BCH50 1.875" M8 x 35 | Screw Size N/A M8 x 35 | Torque [Max] N/A 1663 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 4.528 in |
BCH502114-045 /Asset/BCH_50.jpg | N/A BCH50 1.875" M8 x 45 | Screw Size N/A M8 x 45 | Torque [Max] N/A 1663 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 4.528 in |
BCH502115-035 /Asset/BCH_50.jpg | N/A BCH50 1.9375" M8 x 35 | Screw Size N/A M8 x 35 | Torque [Max] N/A 1719 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 4.528 in |
BCH502115-045 /Asset/BCH_50.jpg | N/A BCH50 1.9375" M8 x 45 | Screw Size N/A M8 x 45 | Torque [Max] N/A 1719 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 4.528 in |
BCH502200-035 /Asset/BCH_50.jpg | N/A BCH50 2" M8 x 35 | Screw Size N/A M8 x 35 | Torque [Max] N/A 1774 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 4.528 in |
BCH502200-045 /Asset/BCH_50.jpg | N/A BCH50 2" M8 x 45 | Screw Size N/A M8 x 45 | Torque [Max] N/A 1774 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 4.528 in |
BCH502202-035 /Asset/BCH_50.jpg | N/A BCH50 2.125" M8 x 35 | Screw Size N/A M8 x 35 | Torque [Max] N/A 1885 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 4.528 in |
BCH502202-045 /Asset/BCH_50.jpg | N/A BCH50 2.125" M8 x 45 | Screw Size N/A M8 x 45 | Torque [Max] N/A 1885 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 4.528 in |
BCH502203-035 /Asset/BCH_50.jpg | N/A BCH50 2.1875" M8 x 35 | Screw Size N/A M8 x 35 | Torque [Max] N/A 1940 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 4.528 in |
BCH502203-045 /Asset/BCH_50.jpg | N/A BCH50 2.1875" M8 x 45 | Screw Size N/A M8 x 45 | Torque [Max] N/A 1940 lb·ft | Tightening Torque N/A 30 lb·ft | Outside Diameter N/A 4.528 in |
BCH502204-040 /Asset/BCH_50.jpg | N/A BCH50 2.25" M10 x 40 | Screw Size N/A M10 x 40 | Torque [Max] N/A 3198 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 5.433 in |
BCH502204-050 /Asset/BCH_50.jpg | N/A BCH50 2.25" M10 x 50 | Screw Size N/A M10 x 50 | Torque [Max] N/A 3198 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 5.433 in |
BCH502206-040 /Asset/BCH_50.jpg | N/A BCH50 2.375" M10 x 40 | Screw Size N/A M10 x 40 | Torque [Max] N/A 3375 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 5.433 in |
BCH502206-050 /Asset/BCH_50.jpg | N/A BCH50 2.375" M10 x 50 | Screw Size N/A M10 x 50 | Torque [Max] N/A 3375 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 5.433 in |
BCH502207-040 /Asset/BCH_50.jpg | N/A BCH50 2.4375" M10 x 40 | Screw Size N/A M10 x 40 | Torque [Max] N/A 3464 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 5.433 in |