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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

B402115 N/A B-LOC B400 1.9375" N/A M8 x 22 N/A 1646 lb·ft N/A 26 lb·ft N/A 3.150 in
B402200 N/A B-LOC B400 2" N/A M8 x 22 N/A 1983 lb·ft N/A 26 lb·ft N/A 3.346 in
B402202 N/A B-LOC B400 2.125" N/A M8 x 22 N/A 2107 lb·ft N/A 26 lb·ft N/A 3.346 in
B402203 N/A B-LOC B400 2.1875" N/A M8 x 22 N/A 2169 lb·ft N/A 26 lb·ft N/A 3.543 in
B402204 N/A B-LOC B400 2.25" N/A M8 x 22 N/A 2231 lb·ft N/A 26 lb·ft N/A 3.543 in
B402207 N/A B-LOC B400 2.4375" N/A M8 x 22 N/A 2762 lb·ft N/A 26 lb·ft N/A 3.740 in
B402208 N/A B-LOC B400 2.5" N/A M8 x 22 N/A 2832 lb·ft N/A 26 lb·ft N/A 3.740 in
B402210 N/A B-LOC B400 2.625" N/A M10 x 25 N/A 4139 lb·ft N/A 51 lb·ft N/A 4.331 in
B402211 N/A B-LOC B400 2.6875" N/A M10 x 25 N/A 4238 lb·ft N/A 51 lb·ft N/A 4.331 in
B402215 N/A B-LOC B400 2.9375" N/A M10 x 25 N/A 4632 lb·ft N/A 51 lb·ft N/A 4.528 in
B402300 N/A B-LOC B400 3" N/A M10 x 25 N/A 4730 lb·ft N/A 51 lb·ft N/A 4.724 in
B402302 N/A B-LOC B400 3.125" N/A M10 x 25 N/A 4928 lb·ft N/A 51 lb·ft N/A 4.724 in
B402306 N/A B-LOC B400 3.375" N/A M10 x 25 N/A 6082 lb·ft N/A 51 lb·ft N/A 4.921 in
B402307 N/A B-LOC B400 3.4375" N/A M10 x 25 N/A 6195 lb·ft N/A 51 lb·ft N/A 5.118 in
B402308 N/A B-LOC B400 3.5" N/A M10 x 25 N/A 6307 lb·ft N/A 51 lb·ft N/A 5.118 in
B402400 N/A B-LOC B400 4" N/A M12 x 30 N/A 9621 lb·ft N/A 91 lb·ft N/A 5.843 in
B402407 N/A B-LOC B400 4.4375" N/A M12 x 30 N/A 12198 lb·ft N/A 91 lb·ft N/A 6.496 in
B402408 N/A B-LOC B400 4.5" N/A M12 x 30 N/A 12370 lb·ft N/A 91 lb·ft N/A 6.496 in
B402415 N/A B-LOC B400 4.9375" N/A M12 x 35 N/A 16966 lb·ft N/A 91 lb·ft N/A 7.087 in
B402507 N/A B-LOC B400 5.4375" N/A M12 x 35 N/A 20552 lb·ft N/A 91 lb·ft N/A 7.480 in
B402600 N/A B-LOC B400 6" N/A M12 x 35 N/A 26801 lb·ft N/A 91 lb·ft N/A 8.268 in
B402608 N/A B-LOC B400 6.5" N/A M14 x 40 N/A 32072 lb·ft N/A 138 lb·ft N/A 8.858 in
B402615 N/A B-LOC B400 6.9375" N/A M14 x 40 N/A 37343 lb·ft N/A 138 lb·ft N/A 9.252 in
B402700 N/A B-LOC B400 7" N/A M14 x 40 N/A 37679 lb·ft N/A 138 lb·ft N/A 9.252 in
BCH201012-016 N/A BCH20 12 mm M4 x 16 N/A M4 x 16 N/A 65 N·m N/A 5 N·m N/A 38 mm
Unit of Measure
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