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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

B302115 N/A B-LOC B103 1.9375" N/A M8 x 25 N/A 1716 lb·ft N/A 25 lb·ft N/A 3.150 in
B302200 N/A B-LOC B103 2" N/A M8 x 25 N/A 1771 lb·ft N/A 25 lb·ft N/A 3.150 in
B302203 N/A B-LOC B103 2.1875" N/A M8 x 25 N/A 2214 lb·ft N/A 25 lb·ft N/A 3.346 in
B302204 N/A B-LOC B103 2.25" N/A M8 x 25 N/A 2277 lb·ft N/A 25 lb·ft N/A 3.543 in
B302207 N/A B-LOC B103 2.4375" N/A M8 x 25 N/A 2775 lb·ft N/A 25 lb·ft N/A 3.740 in
B302208 N/A B-LOC B103 2.5" N/A M8 x 25 N/A 2846 lb·ft N/A 25 lb·ft N/A 3.740 in
B302215 N/A B-LOC B103 2.9375" N/A M10 x 30 N/A 4821 lb·ft N/A 50 lb·ft N/A 4.528 in
B302300 N/A B-LOC B103 3" N/A M10 x 30 N/A 4923 lb·ft N/A 50 lb·ft N/A 4.724 in
B302307 N/A B-LOC B103 3.4375" N/A M10 x 30 N/A 6347 lb·ft N/A 50 lb·ft N/A 5.118 in
B401020 N/A B-LOC B400 20 mm x 47 mm N/A M6 x 18 N/A 335 N·m N/A 15 N·m N/A 47.000 mm
B401024 N/A B-LOC B400 24 mm x 50 mm N/A M6 x 18 N/A 453 N·m N/A 15 N·m N/A 50 mm
B401025 N/A B-LOC B400 25 mm x 50 mm N/A M6 x 18 N/A 472 N·m N/A 15 N·m N/A 50 mm
B401028 N/A B-LOC B400 28 mm x 55 mm N/A M6 x 18 N/A 587 N·m N/A 15 N·m N/A 55.000 mm
B401030 N/A B-LOC B400 30 mm x 55 mm N/A M6 x 18 N/A 629 N·m N/A 15 N·m N/A 55.000 mm
B401032 N/A B-LOC B400 32 mm x 60 mm N/A M6 x 18 N/A 806 N·m N/A 15 N·m N/A 60 mm
B401035 N/A B-LOC B400 35 mm x 60 mm N/A M6 x 18 N/A 881 N·m N/A 15 N·m N/A 60 mm
B401038 N/A B-LOC B400 38 mm x 65 mm N/A M6 x 18 N/A 1116 N·m N/A 15 N·m N/A 65.000 mm
B401040 N/A B-LOC B400 40 mm x 65 mm N/A M6 x 18 N/A 1175 N·m N/A 15 N·m N/A 65.000 mm
B401042 N/A B-LOC B400 42 mm x 75 mm N/A M8 x 22 N/A 1892 N·m N/A 35 N·m N/A 75.000 mm
B401045 N/A B-LOC B400 45 mm x 75 mm N/A M8 x 22 N/A 2027 N·m N/A 35 N·m N/A 75.000 mm
B401050 N/A B-LOC B400 50 mm x 80 mm N/A M8 x 22 N/A 2252 N·m N/A 35 N·m N/A 80 mm
B401055 N/A B-LOC B400 55 mm x 85 mm N/A M8 x 22 N/A 2889 N·m N/A 35 N·m N/A 85 mm
B401060 N/A B-LOC B400 60 mm x 90 mm N/A M8 x 22 N/A 3152 N·m N/A 35 N·m N/A 90.000 mm
B401065 N/A B-LOC B400 65 mm x 95 mm N/A M8 x 22 N/A 3903 N·m N/A 35 N·m N/A 95 mm
B401070 N/A B-LOC B400 70 mm x 110 mm N/A M10 x 25 N/A 5880 N·m N/A 69 N·m N/A 110.000 mm
Unit of Measure
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