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 1-5/8"

  • Series: B400
  • Torque Transmission: 1381
  • 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 5/8"
  • Shaft Tolerance: 1.622
  • Taper: Double
  • Thrust: 20393

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

  • Series: B400
  • Torque Transmission: 586
  • Axial Movement: No
  • Bore Tolerance: 2.365
  • Component Bore Diameter: 2.362"
  • Hub Pressure: 18880
  • 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: 1 1/4"
  • Shaft Tolerance: 1.247
  • Taper: Double
  • Thrust: 11252

Image of B-LOC B400 170mm

  • Series: B400
  • Torque Transmission: 44752
  • Axial Movement: No
  • Bore Tolerance: 225.1
  • Component Bore Diameter: 225mm
  • Hub Pressure: 163
  • Installation Torque: 187 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M14 x 40
  • Self-Centering: No
  • Shaft Diameter: 170mm
  • Shaft Tolerance: 169.9
  • Taper: Double
  • Thrust: 526487

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

  • Series: B400
  • Torque Transmission: 820
  • Axial Movement: No
  • Bore Tolerance: 2.562
  • Component Bore Diameter: 2.559"
  • Hub Pressure: 20331
  • 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: 1 1/2"
  • Shaft Tolerance: 1.497
  • Taper: Double
  • Thrust: 13127

Image of B-LOC B400 32mm

B-LOC B400 32mm

More Information

  • Series: B400
  • Torque Transmission: 806
  • Axial Movement: No
  • Bore Tolerance: 60.08
  • Component Bore Diameter: 60mm
  • Hub Pressure: 131
  • 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: 32mm
  • Shaft Tolerance: 31.92
  • Taper: Double
  • Thrust: 50342

Image of B-LOC B400 100mm

  • Series: B400
  • Torque Transmission: 12800
  • Axial Movement: No
  • Bore Tolerance: 145.1
  • Component Bore Diameter: 145mm
  • Hub Pressure: 180
  • Installation Torque: 123 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M12 x 30
  • Self-Centering: No
  • Shaft Diameter: 100mm
  • Shaft Tolerance: 99.9
  • Taper: Double
  • Thrust: 255998

Image of B-LOC B400 150mm

  • Series: B400
  • Torque Transmission: 32917
  • Axial Movement: No
  • Bore Tolerance: 200.1
  • Component Bore Diameter: 200mm
  • Hub Pressure: 171
  • 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: 150mm
  • Shaft Tolerance: 149.9
  • Taper: Double
  • Thrust: 438854

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

  • Series: B400
  • Torque Transmission: 440
  • Axial Movement: No
  • Bore Tolerance: 2.168
  • Component Bore Diameter: 2.165"
  • Hub Pressure: 17162
  • 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: 1 1/8"
  • Shaft Tolerance: 1.122
  • Taper: Double
  • Thrust: 9377

Image of B-LOC B400 2-7/16"

  • Series: B400
  • Torque Transmission: 2762
  • Axial Movement: No
  • Bore Tolerance: 3.743
  • Component Bore Diameter: 3.74"
  • Hub Pressure: 24491
  • 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 7/16"
  • Shaft Tolerance: 2.4345
  • Taper: Double
  • Thrust: 27191

Image of B-LOC B400 1-11/16"

  • Series: B400
  • Torque Transmission: 1434
  • 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 11/16"
  • Shaft Tolerance: 1.6845
  • Taper: Double
  • Thrust: 20393

Image of B-LOC B400 95mm

B-LOC B400 95mm

More Information

  • Series: B400
  • Torque Transmission: 10259
  • Axial Movement: No
  • Bore Tolerance: 135.1
  • Component Bore Diameter: 135mm
  • Hub Pressure: 177
  • 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: 95mm
  • Shaft Tolerance: 94.9
  • Taper: Double
  • Thrust: 215984

Image of B-LOC B400 1-15/16"

  • Series: B400
  • Torque Transmission: 1646
  • Axial Movement: No
  • Bore Tolerance: 3.153
  • Component Bore Diameter: 3.15"
  • Hub Pressure: 21812
  • 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 15/16"
  • Shaft Tolerance: 1.9345
  • Taper: Double
  • Thrust: 20393

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

  • Series: B400
  • Torque Transmission: 5857
  • 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 1/4"
  • Shaft Tolerance: 3.246
  • Taper: Double
  • Thrust: 43250

Image of B-LOC B400 1-3/8"

  • Series: B400
  • Torque Transmission: 645
  • Axial Movement: No
  • Bore Tolerance: 2.368
  • Component Bore Diameter: 2.365"
  • Hub Pressure: 18856
  • 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: 1 3/8"
  • Shaft Tolerance: 1.372
  • Taper: Double
  • Thrust: 11252

Image of B-LOC B400 40mm

B-LOC B400 40mm

More Information

  • Series: B400
  • Torque Transmission: 1175
  • 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: 40mm
  • Shaft Tolerance: 39.92
  • Taper: Double
  • Thrust: 58732

Image of B-LOC B400 2-3/16"

  • Series: B400
  • Torque Transmission: 2169
  • Axial Movement: No
  • Bore Tolerance: 3.546
  • Component Bore Diameter: 3.543"
  • Hub Pressure: 22622
  • 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 3/16"
  • Shaft Tolerance: 2.1845
  • Taper: Double
  • Thrust: 23792
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