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 B106 190mm

  • Series: B106
  • Torque Transmission: 48110
  • Axial Movement: No
  • Bore Tolerance: 250.08
  • Compliancy: RoHS
  • Component Bore Diameter: 250mm
  • Hub Pressure: 122
  • Installation Torque: 225 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M14 x 40
  • Self-Centering: Yes
  • Shaft Diameter: 190mm
  • Shaft Tolerance: 189.92
  • Taper: Single
  • Thrust: 506425

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 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 B112 2-7/8"

  • Series: B112
  • Torque Transmission: 8932
  • Axial Movement: No
  • Bore Tolerance: 4.333
  • Compliancy: RoHS
  • Component Bore Diameter: 4.331"
  • Hub Pressure: 20714
  • Installation Torque: 60 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Locking
  • Screw Size: M10 x 60
  • Self-Centering: Yes
  • Shaft Diameter: 2 7/8"
  • Shaft Tolerance: 2.873
  • Taper: Double
  • Thrust: 74561

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 B106 100mm

  • Series: B106
  • Torque Transmission: 9901
  • Axial Movement: No
  • Bore Tolerance: 145.08
  • Compliancy: RoHS
  • Component Bore Diameter: 145mm
  • Hub Pressure: 139
  • Installation Torque: 142 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M12 x 35
  • Self-Centering: Yes
  • Shaft Diameter: 100mm
  • Shaft Tolerance: 99.92
  • Taper: Single
  • Thrust: 198016

Image of B-LOC B112 3-7/16"

  • Series: B112
  • Torque Transmission: 12815
  • Axial Movement: No
  • Bore Tolerance: 5.121
  • Compliancy: RoHS
  • Component Bore Diameter: 5.118"
  • Hub Pressure: 21033
  • Installation Torque: 60 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Locking
  • Screw Size: M10 x 60
  • Self-Centering: Yes
  • Shaft Diameter: 3 7/16"
  • Shaft Tolerance: 3.4345
  • Taper: Double
  • Thrust: 89474

Image of B-LOC B106 130mm

  • Series: B106
  • Torque Transmission: 19751
  • Axial Movement: No
  • Bore Tolerance: 180.08
  • Compliancy: RoHS
  • Component Bore Diameter: 180mm
  • Hub Pressure: 132
  • Installation Torque: 225 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M14 x 40
  • Self-Centering: Yes
  • Shaft Diameter: 130mm
  • Shaft Tolerance: 129.92
  • Taper: Single
  • Thrust: 303855

Image of B-LOC B112 2-11/16"

  • Series: B112
  • Torque Transmission: 8349
  • Axial Movement: No
  • Bore Tolerance: 4.333
  • Compliancy: RoHS
  • Component Bore Diameter: 4.331"
  • Hub Pressure: 20714
  • Installation Torque: 60 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Locking
  • Screw Size: M10 x 60
  • Self-Centering: Yes
  • Shaft Diameter: 2 11/16"
  • Shaft Tolerance: 2.6855
  • Taper: Double
  • Thrust: 74561

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 B106 3-3/4"

  • Series: B106
  • Torque Transmission: 5826
  • Axial Movement: No
  • Bore Tolerance: 5.121
  • Compliancy: RoHS
  • Component Bore Diameter: 5.315"
  • Hub Pressure: 19695
  • Installation Torque: 60 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Locking
  • Screw Size: M10 x 30
  • Self-Centering: Yes
  • Shaft Diameter: 3 3/4"
  • Shaft Tolerance: 3.747
  • Taper: Single
  • Thrust: 37288

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 B112 3"

B-LOC B112 3"

More Information

  • Series: B112
  • Torque Transmission: 10252
  • Axial Movement: No
  • Bore Tolerance: 4.727
  • Compliancy: RoHS
  • Component Bore Diameter: 4.724"
  • Hub Pressure: 20887
  • Installation Torque: 60 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Locking
  • Screw Size: M10 x 60
  • Self-Centering: Yes
  • Shaft Diameter: 3"
  • Shaft Tolerance: 2.997
  • Taper: Double
  • Thrust: 82017

Image of B-LOC B112 3-7/8"

  • Series: B112
  • Torque Transmission: 19811
  • Axial Movement: No
  • Bore Tolerance: 5.712
  • Compliancy: RoHS
  • Component Bore Diameter: 5.709"
  • Hub Pressure: 20688
  • Installation Torque: 105 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Locking
  • Screw Size: M12 x 80
  • Self-Centering: Yes
  • Shaft Diameter: 3 7/8"
  • Shaft Tolerance: 3.872
  • Taper: Double
  • Thrust: 122699

Image of B-LOC B106 2-1/8"

  • Series: B106
  • Torque Transmission: 1629
  • Axial Movement: No
  • Bore Tolerance: 3.348
  • Compliancy: RoHS
  • Component Bore Diameter: 3.346"
  • Hub Pressure: 18516
  • 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 1/8"
  • Shaft Tolerance: 2.123
  • Taper: Single
  • Thrust: 18393
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