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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 |
|---|---|---|---|---|---|
| T402212 | N/A B-LOC B400 2.75" | Screw Size N/A M10 x 25 | Torque [Max] N/A 4336 lb·ft | Tightening Torque N/A 51 lb·ft | Outside Diameter N/A 4.337 in |
| T402214 | N/A B-LOC B400 2.875" | Screw Size N/A M10 x 25 | Torque [Max] N/A 4533 lb·ft | Tightening Torque N/A 51 lb·ft | Outside Diameter N/A 4.528 in |
| T402304 | N/A B-LOC B400 3.25" | Screw Size N/A M10 x 25 | Torque [Max] N/A 5857 lb·ft | Tightening Torque N/A 51 lb·ft | Outside Diameter N/A 4.921 in |
| T402312 | N/A B-LOC B400 3.75" | Screw Size N/A M10 x 25 | Torque [Max] N/A 7603 lb·ft | Tightening Torque N/A 51 lb·ft | Outside Diameter N/A 5.305 in |
| T402314 | N/A B-LOC B400 3.875" | Screw Size N/A M12 x 30 | Torque [Max] N/A 9320 lb·ft | Tightening Torque N/A 91 lb·ft | Outside Diameter N/A 5.709 in |
| T402315 | N/A B-LOC B400 3.9375" | Screw Size N/A M12 x 30 | Torque [Max] N/A 9471 lb·ft | Tightening Torque N/A 91 lb·ft | Outside Diameter N/A 5.709 in |
| T402500 | N/A B-LOC B400 5" | Screw Size N/A M12 x 35 | Torque [Max] N/A 17180 lb·ft | Tightening Torque N/A 91 lb·ft | Outside Diameter N/A 7.087 in |
| T402508 | N/A B-LOC B400 5.5" | Screw Size N/A M12 x 35 | Torque [Max] N/A 20788 lb·ft | Tightening Torque N/A 91 lb·ft | Outside Diameter N/A 7.492 in |
| T402607 | N/A B-LOC B400 6.4375" | Screw Size N/A M14 x 40 | Torque [Max] N/A 31764 lb·ft | Tightening Torque N/A 138 lb·ft | Outside Diameter N/A 8.858 in |
| T402708 | N/A B-LOC B400 7.5" | Screw Size N/A M14 x 45 | Torque [Max] N/A 47099 lb·ft | Tightening Torque N/A 138 lb·ft | Outside Diameter N/A 9.823 in |
| T402714 | N/A B-LOC B400 7.875" | Screw Size N/A M14 x 45 | Torque [Max] N/A 52986 lb·ft | Tightening Torque N/A 138 lb·ft | Outside Diameter N/A 10.236 in |
