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 2-7/8"

  • 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 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 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 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 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 B103 15mm

B-LOC B103 15mm

More Information

  • Series: B103
  • Torque Transmission: 115 Nm
  • Axial Movement: Approximately 0.8 mm
  • Bore Tolerance: 32.05
  • Compliancy: RoHS
  • Component Bore Diameter: 32mm
  • Hub Pressure: 91
  • Installation Torque: 5 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M4 x 12
  • Self-Centering: Yes
  • Shaft Diameter: 15mm
  • Shaft Tolerance: 14.95
  • Taper: Single
  • Thrust: 15930

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 B112 3-1/4"

  • Series: B112
  • Torque Transmission: 11107
  • 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 1/4"
  • Shaft Tolerance: 3.247
  • Taper: Double
  • Thrust: 82017

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 B106 4"

B-LOC B106 4"

More Information

  • Series: B106
  • Torque Transmission: 7438
  • Axial Movement: No
  • Bore Tolerance: 5.712
  • Compliancy: RoHS
  • Component Bore Diameter: 5.709"
  • Hub Pressure: 20258
  • Installation Torque: 105 ft lb
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Inch
  • Releasing/ Locking: Locking
  • Screw Size: M12 x 35
  • Self-Centering: Yes
  • Shaft Diameter: 4"
  • Shaft Tolerance: 3.997
  • Taper: Single
  • Thrust: 44627

Image of B-LOC B112 3-5/8"

  • Series: B112
  • Torque Transmission: 13514
  • 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 5/8"
  • Shaft Tolerance: 3.622
  • Taper: Double
  • Thrust: 89474

Image of B-LOC B112 2-5/8"

  • Series: B112
  • Torque Transmission: 8155
  • 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 5/8"
  • Shaft Tolerance: 2.623
  • Taper: Double
  • Thrust: 74561

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 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 B103 3-7/16"

  • Series: B103
  • Torque Transmission: 6347 ft lb
  • Axial Movement: Approximately 0.032"
  • Bore Tolerance: 5.121
  • Compliancy: RoHS
  • Component Bore Diameter: 5.118"
  • Hub Pressure: 24305
  • 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 7/16"
  • Shaft Tolerance: 3.4345
  • Taper: Single
  • Thrust: 44311

Image of B-LOC B106 15mm

B-LOC B106 15mm

More Information

  • Series: B106
  • Torque Transmission: 73
  • Axial Movement: No
  • Bore Tolerance: 28.05
  • Compliancy: RoHS
  • Component Bore Diameter: 28mm
  • Hub Pressure: 66
  • Installation Torque: 5 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M4 x 12
  • Self-Centering: Yes
  • Shaft Diameter: 15mm
  • Shaft Tolerance: 14.95
  • Taper: Single
  • Thrust: 9713
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