B-LOC Keyless Bushings

B-LOC Logo

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 B112 2-3/8"

  • Series: B112
  • Torque Transmission: 4550
  • Axial Movement: No
  • Bore Tolerance: 3.545
  • Compliancy: RoHS
  • Component Bore Diameter: 3.543"
  • Hub Pressure: 19868
  • Installation Torque: 30 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 55
  • Self-Centering: Yes
  • Shaft Diameter: 2 3/8"
  • Shaft Tolerance: 2.373
  • Taper: Double
  • Thrust: 45974

Image of B-LOC B106 80mm

B-LOC B106 80mm

More Information

  • Series: B106
  • Torque Transmission: 5285
  • Axial Movement: No
  • Bore Tolerance: 120.08
  • Compliancy: RoHS
  • Component Bore Diameter: 120mm
  • Hub Pressure: 122
  • Installation Torque: 81 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M10 x 30
  • Self-Centering: Yes
  • Shaft Diameter: 80mm
  • Shaft Tolerance: 79.92
  • Taper: Single
  • Thrust: 132127

Image of B-LOC B103 2"

B-LOC B103 2"

More Information

  • Series: B103
  • Torque Transmission: 1771 ft lb
  • Axial Movement: Approximately 0.032"
  • Bore Tolerance: 3.152
  • Compliancy: RoHS
  • Component Bore Diameter: 3.15"
  • Hub Pressure: 22729
  • Installation Torque: 25 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 25
  • Self-Centering: Yes
  • Shaft Diameter: 2"
  • Shaft Tolerance: 1.998
  • Taper: Single
  • Thrust: 21250

Image of B-LOC B103 38mm

B-LOC B103 38mm

More Information

  • Series: B103
  • Torque Transmission: 1106 Nm
  • Axial Movement: Approximately 0.8 mm
  • Bore Tolerance: 65.05
  • Compliancy: RoHS
  • Component Bore Diameter: 65mm
  • Hub Pressure: 140
  • Installation Torque: 14 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M6 x 20
  • Self-Centering: Yes
  • Shaft Diameter: 38mm
  • Shaft Tolerance: 37.95
  • Taper: Single
  • Thrust: 58193

Image of B-LOC B106 2-1/2"

  • Series: B106
  • Torque Transmission: 2155
  • Axial Movement: No
  • Bore Tolerance: 3.742
  • Compliancy: RoHS
  • Component Bore Diameter: 3.74"
  • Hub Pressure: 18638
  • Installation Torque: 30 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 25
  • Self-Centering: Yes
  • Shaft Diameter: 2 1/2"
  • Shaft Tolerance: 2.498
  • Taper: Single
  • Thrust: 20693

Image of B-LOC B103 70mm

B-LOC B103 70mm

More Information

  • Series: B103
  • Torque Transmission: 6151 Nm
  • Axial Movement: Approximately 0.8 mm
  • Bore Tolerance: 110.05
  • Compliancy: RoHS
  • Component Bore Diameter: 110mm
  • Hub Pressure: 177
  • Installation Torque: 68 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M10 x 30
  • Self-Centering: Yes
  • Shaft Diameter: 70mm
  • Shaft Tolerance: 69.95
  • Taper: Single
  • Thrust: 175750

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 B106 60mm

B-LOC B106 60mm

More Information

  • Series: B106
  • Torque Transmission: 2474
  • Axial Movement: No
  • Bore Tolerance: 90.05
  • Compliancy: RoHS
  • Component Bore Diameter: 90mm
  • Hub Pressure: 122
  • Installation Torque: 41 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 25
  • Self-Centering: Yes
  • Shaft Diameter: 60mm
  • Shaft Tolerance: 59.95
  • Taper: Single
  • Thrust: 82476

Image of B-LOC B112 55mm

B-LOC B112 55mm

More Information

  • Series: B112
  • Torque Transmission: 5102
  • Axial Movement: No
  • Bore Tolerance: 85.05
  • Compliancy: RoHS
  • Component Bore Diameter: 85mm
  • Hub Pressure: 132
  • Installation Torque: 41 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 55
  • Self-Centering: Yes
  • Shaft Diameter: 55mm
  • Shaft Tolerance: 54.95
  • Taper: Double
  • Thrust: 185533

Image of B-LOC B103 1-3/4"

  • Series: B103
  • Torque Transmission: 1550 ft lb
  • Axial Movement: Approximately 0.032"
  • Bore Tolerance: 2.955
  • Compliancy: RoHS
  • Component Bore Diameter: 2.953"
  • Hub Pressure: 24245
  • Installation Torque: 25 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 25
  • Self-Centering: Yes
  • Shaft Diameter: 1 3/4"
  • Shaft Tolerance: 1.748
  • Taper: Single
  • Thrust: 21250

Image of B-LOC B103 3"

B-LOC B103 3"

More Information

  • Series: B103
  • Torque Transmission: 4923 ft lb
  • Axial Movement: Approximately 0.032"
  • Bore Tolerance: 4.727
  • Compliancy: RoHS
  • Component Bore Diameter: 4.724"
  • Hub Pressure: 23404
  • Installation Torque: 50 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Locking
  • Screw Size: M10 x 30
  • Self-Centering: Yes
  • Shaft Diameter: 3"
  • Shaft Tolerance: 2.997
  • Taper: Single
  • Thrust: 39387

Image of B-LOC B112 1-3/4"

  • Series: B112
  • Torque Transmission: 2347
  • Axial Movement: No
  • Bore Tolerance: 2.955
  • Compliancy: RoHS
  • Component Bore Diameter: 2.953"
  • Hub Pressure: 21598
  • Installation Torque: 30 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 50
  • Self-Centering: Yes
  • Shaft Diameter: 1 3/4"
  • Shaft Tolerance: 1.748
  • Taper: Double
  • Thrust: 32182

Image of B-LOC B103 1-15/16"

  • Series: B103
  • Torque Transmission: 1716 ft lb
  • Axial Movement: Approximately 0.032"
  • Bore Tolerance: 3.152
  • Component Bore Diameter: 3.15"
  • Hub Pressure: 22729
  • Installation Torque: 25 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 25
  • Self-Centering: Yes
  • Shaft Diameter: 1 15/16"
  • Shaft Tolerance: 1.9355
  • Taper: Single
  • Thrust: 21250

Image of B-LOC B112 50mm

B-LOC B112 50mm

More Information

  • Series: B112
  • Torque Transmission: 4123
  • Axial Movement: No
  • Bore Tolerance: 80.05
  • Compliancy: RoHS
  • Component Bore Diameter: 80mm
  • Hub Pressure: 124
  • Installation Torque: 41 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 55
  • Self-Centering: Yes
  • Shaft Diameter: 50mm
  • Shaft Tolerance: 49.95
  • Taper: Double
  • Thrust: 164918

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 B103 60mm

B-LOC B103 60mm

More Information

  • Series: B103
  • Torque Transmission: 3251 Nm
  • Axial Movement: Approximately 0.8 mm
  • Bore Tolerance: 90.05
  • Compliancy: RoHS
  • Component Bore Diameter: 90mm
  • Hub Pressure: 160
  • Installation Torque: 34 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 25
  • Self-Centering: Yes
  • Shaft Diameter: 60mm
  • Shaft Tolerance: 59.95
  • Taper: Single
  • Thrust: 108368
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