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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 |
|---|---|---|---|---|---|
| T152307 | N/A B-LOC B115 3.4375" | Screw Size N/A M10 x 50 | Torque [Max] N/A 9042 lb·ft | Tightening Torque N/A 60 lb·ft | Outside Diameter N/A 5.118 in |
| T152408 | N/A B-LOC B115 4.5" | Screw Size N/A M12 x 60 | Torque [Max] N/A 17708 lb·ft | Tightening Torque N/A 105 lb·ft | Outside Diameter N/A 6.496 in |
| T152415 | N/A B-LOC B115 4.9375" | Screw Size N/A M12 x 70 | Torque [Max] N/A 24729 lb·ft | Tightening Torque N/A 105 lb·ft | Outside Diameter N/A 7.087 in |
| T152500 | N/A B-LOC B115 5" | Screw Size N/A M12 x 70 | Torque [Max] N/A 25042 lb·ft | Tightening Torque N/A 105 lb·ft | Outside Diameter N/A 7.087 in |
| T152600 | N/A B-LOC B115 6" | Screw Size N/A M12 x 70 | Torque [Max] N/A 34343 lb·ft | Tightening Torque N/A 105 lb·ft | Outside Diameter N/A 8.268 in |
| T152607 | N/A B-LOC B115 6.4375" | Screw Size N/A M14 x 80 | Torque [Max] N/A 47013 lb·ft | Tightening Torque N/A 166 lb·ft | Outside Diameter N/A 8.858 in |
| T301015 | N/A B-LOC B103 15 mm x 32 mm | Screw Size N/A M4 x 12 | Torque [Max] N/A 115 N·m | Tightening Torque N/A 5 N·m | Outside Diameter N/A 32 mm |
| T301019 | N/A B-LOC B103 19 mm x 47 mm | Screw Size N/A M6 x 20 | Torque [Max] N/A 346 N·m | Tightening Torque N/A 14 N·m | Outside Diameter N/A 47.000 mm |
| T301020 | N/A B-LOC B103 20 mm x 47 mm | Screw Size N/A M6 x 20 | Torque [Max] N/A 364 N·m | Tightening Torque N/A 14 N·m | Outside Diameter N/A 47.000 mm |
| T301022 | N/A B-LOC B103 22 mm x 47 mm | Screw Size N/A M6 x 20 | Torque [Max] N/A 400 N·m | Tightening Torque N/A 14 N·m | Outside Diameter N/A 47.000 mm |
| T301024 | N/A B-LOC B103 24 mm x 50 mm | Screw Size N/A M6 x 20 | Torque [Max] N/A 524 N·m | Tightening Torque N/A 14 N·m | Outside Diameter N/A 50 mm |
| T301028 | N/A B-LOC B103 28 mm x 55 mm | Screw Size N/A M6 x 20 | Torque [Max] N/A 611 N·m | Tightening Torque N/A 14 N·m | Outside Diameter N/A 55.000 mm |
| T301032 | N/A B-LOC B103 32 mm x 60 mm | Screw Size N/A M6 x 20 | Torque [Max] N/A 931 N·m | Tightening Torque N/A 14 N·m | Outside Diameter N/A 60 mm |
| T301038 | N/A B-LOC B103 38 mm x 65 mm | Screw Size N/A M6 x 20 | Torque [Max] N/A 1106 N·m | Tightening Torque N/A 14 N·m | Outside Diameter N/A 65.000 mm |
| T301042 | N/A B-LOC B103 42 mm x 75 mm | Screw Size N/A M8 x 25 | Torque [Max] N/A 1991 N·m | Tightening Torque N/A 34 N·m | Outside Diameter N/A 75.000 mm |
| T301055 | N/A B-LOC B103 55 mm x 85 mm | Screw Size N/A M8 x 25 | Torque [Max] N/A 2980 N·m | Tightening Torque N/A 34 N·m | Outside Diameter N/A 85 mm |
| T301065 | N/A B-LOC B103 65 mm x 95 mm | Screw Size N/A M8 x 25 | Torque [Max] N/A 3962 N·m | Tightening Torque N/A 34 N·m | Outside Diameter N/A 95 mm |
| T301075 | N/A B-LOC B103 75 mm x 115 mm | Screw Size N/A M10 x 30 | Torque [Max] N/A 6591 N·m | Tightening Torque N/A 68 N·m | Outside Diameter N/A 115 mm |
| T301080 | N/A B-LOC B103 80 mm x 120 mm | Screw Size N/A M10 x 30 | Torque [Max] N/A 7030 N·m | Tightening Torque N/A 68 N·m | Outside Diameter N/A 120.000 mm |
| T301095 | N/A B-LOC B103 95 mm x 135 mm | Screw Size N/A M10 x 30 | Torque [Max] N/A 10435 N·m | Tightening Torque N/A 68 N·m | Outside Diameter N/A 135 mm |
| T301110 | N/A B-LOC B103 110 mm x 155 mm | Screw Size N/A M12 x 35 | Torque [Max] N/A 14826 N·m | Tightening Torque N/A 122 N·m | Outside Diameter N/A 155 mm |
| T301160 | N/A B-LOC B103 160 mm x 210 mm | Screw Size N/A M14 x 40 | Torque [Max] N/A 38287 N·m | Tightening Torque N/A 183 N·m | Outside Diameter N/A 210.000 mm |
| T302014 | N/A B-LOC B103 7/8" | Screw Size N/A M6 x 20 | Torque [Max] N/A 289 lb·ft | Tightening Torque N/A 10 lb·ft | Outside Diameter N/A 1.850 in |
| T302111 | N/A B-LOC B103 1.6875" | Screw Size N/A M8 x 25 | Torque [Max] N/A 1494 lb·ft | Tightening Torque N/A 25 lb·ft | Outside Diameter N/A 2.953 in |
| T302114 | N/A B-LOC B103 1.875" | Screw Size N/A M8 x 25 | Torque [Max] N/A 1660 lb·ft | Tightening Torque N/A 25 lb·ft | Outside Diameter N/A 3.150 in |
