B-LOC Keyless Bushings

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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.

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Image of B-LOC B400 1-3/4"

  • Series: B400
  • Torque Transmission: 1487
  • Axial Movement: No
  • Bore Tolerance: 2.956
  • Component Bore Diameter: 2.953"
  • Hub Pressure: 23267
  • Installation Torque: 26 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Releasing
  • Screw Size: M8 x 22
  • Self-Centering: No
  • Shaft Diameter: 1 3/4"
  • Shaft Tolerance: 1.747
  • Taper: Double
  • Thrust: 20393

Image of B-LOC B400 30mm

B-LOC B400 30mm

More Information

  • Series: B400
  • Torque Transmission: 629
  • Axial Movement: No
  • Bore Tolerance: 55.08
  • Component Bore Diameter: 55mm
  • Hub Pressure: 119
  • Installation Torque: 15 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M6 x 18
  • Self-Centering: No
  • Shaft Diameter: 30mm
  • Shaft Tolerance: 29.92
  • Taper: Double
  • Thrust: 41952

Image of B-LOC B400 70mm

B-LOC B400 70mm

More Information

  • Series: B400
  • Torque Transmission: 5880
  • Axial Movement: No
  • Bore Tolerance: 110.08
  • Component Bore Diameter: 110mm
  • Hub Pressure: 169
  • Installation Torque: 69 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M10 x 25
  • Self-Centering: No
  • Shaft Diameter: 70mm
  • Shaft Tolerance: 69.92
  • Taper: Double
  • Thrust: 167988

Image of B-LOC B400 7/8"

B-LOC B400 7/8"

More Information

  • Series: B400
  • Torque Transmission: 273
  • Axial Movement: No
  • Bore Tolerance: 1.852
  • Component Bore Diameter: 1.850"
  • Hub Pressure: 16067
  • Installation Torque: 11 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Releasing
  • Screw Size: M6 x 18
  • Self-Centering: No
  • Shaft Diameter: 7/8"
  • Shaft Tolerance: 0.873
  • Taper: Double
  • Thrust: 7501

Image of B-LOC B400 60mm

B-LOC B400 60mm

More Information

  • Series: B400
  • Torque Transmission: 3152
  • Axial Movement: No
  • Bore Tolerance: 90.08
  • Component Bore Diameter: 90mm
  • Hub Pressure: 155
  • Installation Torque: 35 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M8 x 22
  • Self-Centering: No
  • Shaft Diameter: 60mm
  • Shaft Tolerance: 59.92
  • Taper: Double
  • Thrust: 105083

Image of B-LOC B400 2-1/8"

  • Series: B400
  • Torque Transmission: 2107
  • Axial Movement: No
  • Bore Tolerance: 3.349
  • Component Bore Diameter: 3.346"
  • Hub Pressure: 23951
  • Installation Torque: 26 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Releasing
  • Screw Size: M8 x 22
  • Self-Centering: No
  • Shaft Diameter: 2 1/8"
  • Shaft Tolerance: 2.122
  • Taper: Double
  • Thrust: 23792

Image of B-LOC B400 80mm

B-LOC B400 80mm

More Information

  • Series: B400
  • Torque Transmission: 6720
  • Axial Movement: No
  • Bore Tolerance: 120.1
  • Component Bore Diameter: 120mm
  • Hub Pressure: 155
  • Installation Torque: 69 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M10 x 25
  • Self-Centering: No
  • Shaft Diameter: 80mm
  • Shaft Tolerance: 79.9
  • Taper: Double
  • Thrust: 167988

Image of B-LOC B400 3-3/8"

  • Series: B400
  • Torque Transmission: 6082
  • Axial Movement: No
  • Bore Tolerance: 4.925
  • Component Bore Diameter: 4.921"
  • Hub Pressure: 24672
  • Installation Torque: 51 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Releasing
  • Screw Size: M10 x 25
  • Self-Centering: No
  • Shaft Diameter: 3 3/8"
  • Shaft Tolerance: 3.371
  • Taper: Double
  • Thrust: 43250

Image of B-LOC B400 3"

B-LOC B400 3"

More Information

  • Series: B400
  • Torque Transmission: 4730
  • Axial Movement: No
  • Bore Tolerance: 4.728
  • Component Bore Diameter: 4.724"
  • Hub Pressure: 22487
  • Installation Torque: 51 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Releasing
  • Screw Size: M10 x 25
  • Self-Centering: No
  • Shaft Diameter: 3"
  • Shaft Tolerance: 2.996
  • Taper: Double
  • Thrust: 37844

Image of B-LOC B400 2-3/4"

  • Series: B400
  • Torque Transmission: 4336
  • Axial Movement: No
  • Bore Tolerance: 4.34
  • Component Bore Diameter: 4.337"
  • Hub Pressure: 24496
  • Installation Torque: 51 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Releasing
  • Screw Size: M10 x 25
  • Self-Centering: No
  • Shaft Diameter: 2 3/4"
  • Shaft Tolerance: 2.747
  • Taper: Double
  • Thrust: 37844

Image of B-LOC B400 140mm

  • Series: B400
  • Torque Transmission: 28161
  • Axial Movement: No
  • Bore Tolerance: 190.1
  • Component Bore Diameter: 190mm
  • Hub Pressure: 165
  • Installation Torque: 123 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M12 x 35
  • Self-Centering: No
  • Shaft Diameter: 140mm
  • Shaft Tolerance: 139.9
  • Taper: Double
  • Thrust: 402283

Image of B-LOC B400 50mm

B-LOC B400 50mm

More Information

  • Series: B400
  • Torque Transmission: 2252
  • Axial Movement: No
  • Bore Tolerance: 80.08
  • Component Bore Diameter: 80mm
  • Hub Pressure: 149
  • Installation Torque: 35 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M8 x 22
  • Self-Centering: No
  • Shaft Diameter: 50mm
  • Shaft Tolerance: 49.92
  • Taper: Double
  • Thrust: 90071

Image of B-LOC B400 2-15/16"

  • Series: B400
  • Torque Transmission: 4632
  • Axial Movement: No
  • Bore Tolerance: 4.531
  • Component Bore Diameter: 4.528"
  • Hub Pressure: 23465
  • Installation Torque: 51 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Releasing
  • Screw Size: M10 x 25
  • Self-Centering: No
  • Shaft Diameter: 2 15/16"
  • Shaft Tolerance: 2.9345
  • Taper: Double
  • Thrust: 37844

Image of B-LOC B400 38mm

B-LOC B400 38mm

More Information

  • Series: B400
  • Torque Transmission: 1116
  • Axial Movement: No
  • Bore Tolerance: 65.08
  • Component Bore Diameter: 65mm
  • Hub Pressure: 141
  • Installation Torque: 15 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M6 x 18
  • Self-Centering: No
  • Shaft Diameter: 38mm
  • Shaft Tolerance: 37.92
  • Taper: Double
  • Thrust: 58732

Image of B-LOC B400 2-9/16"

  • Series: B400
  • Torque Transmission: 2903
  • Axial Movement: No
  • Bore Tolerance: 3.74
  • Component Bore Diameter: 3.737"
  • Hub Pressure: 24512
  • Installation Torque: 26 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Releasing
  • Screw Size: M8 x 22
  • Self-Centering: No
  • Shaft Diameter: 2 9/16"
  • Shaft Tolerance: 2.5595
  • Taper: Double
  • Thrust: 27191

Image of B-LOC B400 2-5/8"

  • Series: B400
  • Torque Transmission: 4139
  • Axial Movement: No
  • Bore Tolerance: 4.334
  • Component Bore Diameter: 4.331"
  • Hub Pressure: 24532
  • Installation Torque: 51 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Releasing
  • Screw Size: M10 x 25
  • Self-Centering: No
  • Shaft Diameter: 2 5/8"
  • Shaft Tolerance: 2.622
  • Taper: Double
  • Thrust: 37844

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