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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

BCH502107-030 N/A BCH50 1.4375" M6 x 30 N/A M6 x 30 N/A 811 lb·ft N/A 12 lb·ft N/A 3.307 in
BCH502107-035 N/A BCH50 1.4375" M6 x 35 N/A M6 x 35 N/A 811 lb·ft N/A 12 lb·ft N/A 3.307 in
BCH502108-030 N/A BCH50 1.5" M6 x 30 N/A M6 x 30 N/A 846 lb·ft N/A 12 lb·ft N/A 3.307 in
BCH502108-035 N/A BCH50 1.5" M6 x 35 N/A M6 x 35 N/A 846 lb·ft N/A 12 lb·ft N/A 3.307 in
BCH502110-035 N/A BCH50 1.625" M8 x 35 N/A M8 x 35 N/A 1261 lb·ft N/A 30 lb·ft N/A 3.780 in
BCH502110-045 N/A BCH50 1.625" M8 x 45 N/A M8 x 45 N/A 1261 lb·ft N/A 30 lb·ft N/A 3.780 in
BCH502111-035 N/A BCH50 1.6875" M8 x 35 N/A M8 x 35 N/A 1310 lb·ft N/A 30 lb·ft N/A 3.780 in
BCH502111-045 N/A BCH50 1.6875" M8 x 45 N/A M8 x 45 N/A 1310 lb·ft N/A 30 lb·ft N/A 3.780 in
BCH502112-035 N/A BCH50 1.75" M8 x 35 N/A M8 x 35 N/A 1358 lb·ft N/A 30 lb·ft N/A 3.780 in
BCH502112-045 N/A BCH50 1.75" M8 x 45 N/A M8 x 45 N/A 1358 lb·ft N/A 30 lb·ft N/A 3.780 in
BCH502114-035 N/A BCH50 1.875" M8 x 35 N/A M8 x 35 N/A 1663 lb·ft N/A 30 lb·ft N/A 4.528 in
BCH502114-045 N/A BCH50 1.875" M8 x 45 N/A M8 x 45 N/A 1663 lb·ft N/A 30 lb·ft N/A 4.528 in
BCH502115-035 N/A BCH50 1.9375" M8 x 35 N/A M8 x 35 N/A 1719 lb·ft N/A 30 lb·ft N/A 4.528 in
BCH502115-045 N/A BCH50 1.9375" M8 x 45 N/A M8 x 45 N/A 1719 lb·ft N/A 30 lb·ft N/A 4.528 in
BCH502200-035 N/A BCH50 2" M8 x 35 N/A M8 x 35 N/A 1774 lb·ft N/A 30 lb·ft N/A 4.528 in
BCH502200-045 N/A BCH50 2" M8 x 45 N/A M8 x 45 N/A 1774 lb·ft N/A 30 lb·ft N/A 4.528 in
BCH502202-035 N/A BCH50 2.125" M8 x 35 N/A M8 x 35 N/A 1885 lb·ft N/A 30 lb·ft N/A 4.528 in
BCH502202-045 N/A BCH50 2.125" M8 x 45 N/A M8 x 45 N/A 1885 lb·ft N/A 30 lb·ft N/A 4.528 in
BCH502203-035 N/A BCH50 2.1875" M8 x 35 N/A M8 x 35 N/A 1940 lb·ft N/A 30 lb·ft N/A 4.528 in
BCH502203-045 N/A BCH50 2.1875" M8 x 45 N/A M8 x 45 N/A 1940 lb·ft N/A 30 lb·ft N/A 4.528 in
BCH502204-040 N/A BCH50 2.25" M10 x 40 N/A M10 x 40 N/A 3198 lb·ft N/A 60 lb·ft N/A 5.433 in
BCH502204-050 N/A BCH50 2.25" M10 x 50 N/A M10 x 50 N/A 3198 lb·ft N/A 60 lb·ft N/A 5.433 in
BCH502206-040 N/A BCH50 2.375" M10 x 40 N/A M10 x 40 N/A 3375 lb·ft N/A 60 lb·ft N/A 5.433 in
BCH502206-050 N/A BCH50 2.375" M10 x 50 N/A M10 x 50 N/A 3375 lb·ft N/A 60 lb·ft N/A 5.433 in
BCH502207-040 N/A BCH50 2.4375" M10 x 40 N/A M10 x 40 N/A 3464 lb·ft N/A 60 lb·ft N/A 5.433 in
Unit of Measure
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