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 2"

B-LOC B400 2"

More Information

  • Series: B400
  • Torque Transmission: 1983
  • 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"
  • Shaft Tolerance: 1.997
  • Taper: Double
  • Thrust: 23792

Image of B-LOC B400 1"

B-LOC B400 1"

More Information

  • Series: B400
  • Torque Transmission: 352
  • Axial Movement: No
  • Bore Tolerance: 1.972
  • Component Bore Diameter: 1.969"
  • Hub Pressure: 16991
  • 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"
  • Shaft Tolerance: 0.997
  • Taper: Double
  • Thrust: 8439

Image of B-LOC B400 200mm

  • Series: B400
  • Torque Transmission: 71794
  • Axial Movement: No
  • Bore Tolerance: 260.1
  • Component Bore Diameter: 260mm
  • Hub Pressure: 159
  • Installation Torque: 187 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M14 x 45
  • Self-Centering: No
  • Shaft Diameter: 200mm
  • Shaft Tolerance: 199.87
  • Taper: Double
  • Thrust: 717937

Image of B-LOC B400 120mm

  • Series: B400
  • Torque Transmission: 17553
  • Axial Movement: No
  • Bore Tolerance: 165.1
  • Component Bore Diameter: 165mm
  • Hub Pressure: 181
  • 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: 120mm
  • Shaft Tolerance: 119.9
  • Taper: Double
  • Thrust: 292569

Image of B-LOC B400 2-11/16"

  • Series: B400
  • Torque Transmission: 4238
  • 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 11/16"
  • Shaft Tolerance: 2.6845
  • Taper: Double
  • Thrust: 37844

Image of B-LOC B400 85mm

B-LOC B400 85mm

More Information

  • Series: B400
  • Torque Transmission: 8158
  • Axial Movement: No
  • Bore Tolerance: 125.1
  • Component Bore Diameter: 125mm
  • Hub Pressure: 170
  • 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: 85mm
  • Shaft Tolerance: 84.9
  • Taper: Double
  • Thrust: 191986

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

  • Series: B400
  • Torque Transmission: 4928
  • 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 1/8"
  • Shaft Tolerance: 3.121
  • Taper: Double
  • Thrust: 37844

Image of B-LOC B400 1-7/8"

  • Series: B400
  • Torque Transmission: 1593
  • 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 7/8"
  • Shaft Tolerance: 1.872
  • Taper: Double
  • Thrust: 20393

Image of B-LOC B400 3-7/8"

  • Series: B400
  • Torque Transmission: 9320
  • Axial Movement: No
  • Bore Tolerance: 5.713
  • Component Bore Diameter: 5.709"
  • Hub Pressure: 26204
  • Installation Torque: 91 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Releasing
  • Screw Size: M12 x 30
  • Self-Centering: No
  • Shaft Diameter: 3 7/8"
  • Shaft Tolerance: 3.871
  • Taper: Double
  • Thrust: 57726

Image of B-LOC B400 75mm

B-LOC B400 75mm

More Information

  • Series: B400
  • Torque Transmission: 6300
  • Axial Movement: No
  • Bore Tolerance: 115.08
  • Component Bore Diameter: 115mm
  • Hub Pressure: 161
  • 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: 75mm
  • Shaft Tolerance: 74.92
  • Taper: Double
  • Thrust: 167988

Image of B-LOC B400 3-7/16"

  • Series: B400
  • Torque Transmission: 6195
  • Axial Movement: No
  • Bore Tolerance: 5.122
  • Component Bore Diameter: 5.118"
  • Hub Pressure: 23723
  • 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 7/16"
  • Shaft Tolerance: 3.4335
  • Taper: Double
  • Thrust: 43250

Image of B-LOC B400 25mm

B-LOC B400 25mm

More Information

  • Series: B400
  • Torque Transmission: 472
  • Axial Movement: No
  • Bore Tolerance: 50.08
  • Component Bore Diameter: 50mm
  • Hub Pressure: 118
  • 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: 25mm
  • Shaft Tolerance: 24.92
  • Taper: Double
  • Thrust: 37756

Image of B-LOC B400 24mm

B-LOC B400 24mm

More Information

  • Series: B400
  • Torque Transmission: 453
  • Axial Movement: No
  • Bore Tolerance: 50.08
  • Component Bore Diameter: 50mm
  • Hub Pressure: 118
  • 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: 24mm
  • Shaft Tolerance: 23.92
  • Taper: Double
  • Thrust: 37756

Image of B-LOC B400 4"

B-LOC B400 4"

More Information

  • Series: B400
  • Torque Transmission: 9621
  • Axial Movement: No
  • Bore Tolerance: 5.847
  • Component Bore Diameter: 5.843"
  • Hub Pressure: 25602
  • Installation Torque: 91 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Releasing
  • Screw Size: M12 x 30
  • Self-Centering: No
  • Shaft Diameter: 4"
  • Shaft Tolerance: 3.9335
  • Taper: Double
  • Thrust: 57726

Image of B-LOC B400 48mm

B-LOC B400 48mm

More Information

  • Series: B400
  • Torque Transmission: 2162
  • 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: 48mm
  • Shaft Tolerance: 47.92
  • Taper: Double
  • Thrust: 90071

Image of B-LOC B400 110mm

  • Series: B400
  • Torque Transmission: 14081
  • Axial Movement: No
  • Bore Tolerance: 155.1
  • Component Bore Diameter: 155mm
  • Hub Pressure: 169
  • 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: 110mm
  • Shaft Tolerance: 109.9
  • Taper: Double
  • Thrust: 255998

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