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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.
Straight Locking Assemblies
Unit of Measure
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Item #

Item Name

Screw Size

Torque [Max]

Tightening Torque

Outside Diameter

B122407 N/A B-LOC B112 4.4375" N/A M12 x 80 N/A 28874 lb·ft N/A 105 lb·ft N/A 6.496 in
B122408 N/A B-LOC B112 4.5" N/A M12 x 80 N/A 29280 lb·ft N/A 105 lb·ft N/A 6.496 in
B122415 N/A B-LOC B112 4.9375" N/A M14 x 90 N/A 37477 lb·ft N/A 166 lb·ft N/A 7.087 in
B122500 N/A B-LOC B112 5" N/A M14 x 90 N/A 37952 lb·ft N/A 166 lb·ft N/A 7.087 in
B122504 N/A B-LOC B112 5.25" N/A M14 x 90 N/A 46491 lb·ft N/A 166 lb·ft N/A 7.480 in
B122507 N/A B-LOC B112 5.4375" N/A M14 x 90 N/A 48151 lb·ft N/A 166 lb·ft N/A 7.480 in
B122515 N/A B-LOC B112 5.9375" N/A M14 x 90 N/A 56334 lb·ft N/A 166 lb·ft N/A 7.874 in
B122600 N/A B-LOC B112 6" N/A M14 x 90 N/A 60722 lb·ft N/A 166 lb·ft N/A 8.268 in
B122615 N/A B-LOC B112 6.9375" N/A M16 x 110 N/A 89810 lb·ft N/A 257 lb·ft N/A 9.252 in
B122700 N/A B-LOC B112 7" N/A M16 x 110 N/A 90619 lb·ft N/A 257 lb·ft N/A 9.252 in
B151070 N/A B-LOC B115 70 mm x 110 mm N/A M10 x 50 N/A 7118 N·m N/A 81 N·m N/A 110.000 mm
B151100 N/A B-LOC B115 100 mm x 145 mm N/A M12 x 60 N/A 19048 N·m N/A 142 N·m N/A 145.000 mm
B151120 N/A B-LOC B115 120 mm x 165 mm N/A M12 x 60 N/A 25144 N·m N/A 142 N·m N/A 165 mm
B151140 N/A B-LOC B115 140 mm x 190 mm N/A M12 x 70 N/A 40001 N·m N/A 142 N·m N/A 190 mm
B151150 N/A B-LOC B115 150 mm x 200 mm N/A M12 x 70 N/A 42859 N·m N/A 142 N·m N/A 200.000 mm
B151170 N/A B-LOC B115 170 mm x 225 mm N/A M14 x 80 N/A 66254 N·m N/A 225 N·m N/A 225.000 mm
B151180 N/A B-LOC B115 180 mm x 235 mm N/A M14 x 80 N/A 70151 N·m N/A 225 N·m N/A 235 mm
B151190 N/A B-LOC B115 190 mm x 250 mm N/A M14 x 80 N/A 78985 N·m N/A 225 N·m N/A 250.000 mm
B151200 N/A B-LOC B115 200 mm x 260 mm N/A M14 x 80 N/A 93535 N·m N/A 225 N·m N/A 260.000 mm
B152212 N/A B-LOC B115 2.75" N/A M10 x 50 N/A 5261 N·m N/A 60 N·m N/A 4.331 in
B152215 N/A B-LOC B115 2.9375" N/A M10 x 50 N/A 5620 N·m N/A 60 N·m N/A 4.528 in
B152308 N/A B-LOC B115 3.5" N/A M10 x 50 N/A 9207 N·m N/A 60 N·m N/A 5.118 in
B152315 N/A B-LOC B115 3.9375" N/A M12 x 60 N/A 14086 N·m N/A 105 N·m N/A 5.709 in
B152407 N/A B-LOC B115 4.4375" N/A M12 x 60 N/A 17462 N·m N/A 105 N·m N/A 6.496 in
B152507 N/A B-LOC B115 5.4375" N/A M12 x 70 N/A 29178 N·m N/A 105 N·m N/A 7.480 in
Unit of Measure
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