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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.

Helpful Design Tools:

CAD Drawings >>
B-LOC Interchange Guide >>
Hub OD Calculator >>

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  • Page:

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 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 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 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 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 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 B112 75mm

B-LOC B112 75mm

More Information

  • Series: B112
  • Torque Transmission: 12384
  • Axial Movement: No
  • Bore Tolerance: 115.05
  • Compliancy: RoHS
  • Component Bore Diameter: 115mm
  • Hub Pressure: 136
  • Installation Torque: 81 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M10 x 60
  • Self-Centering: Yes
  • Shaft Diameter: 75mm
  • Shaft Tolerance: 74.95
  • Taper: Double
  • Thrust: 330251

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 B112 95mm

B-LOC B112 95mm

More Information

  • Series: B112
  • Torque Transmission: 18824
  • Axial Movement: No
  • Bore Tolerance: 135.08
  • Compliancy: RoHS
  • Component Bore Diameter: 135mm
  • Hub Pressure: 139
  • Installation Torque: 81 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M10 x 60
  • Self-Centering: Yes
  • Shaft Diameter: 95mm
  • Shaft Tolerance: 94.92
  • Taper: Double
  • Thrust: 396302

Image of B-LOC B112 2-7/16"

  • Series: B112
  • Torque Transmission: 4669
  • Axial Movement: No
  • Bore Tolerance: 3.742
  • Compliancy: RoHS
  • Component Bore Diameter: 3.74"
  • Hub Pressure: 18822
  • 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 7/16"
  • Shaft Tolerance: 2.4355
  • Taper: Double
  • Thrust: 45974

Image of B-LOC B112 90mm

B-LOC B112 90mm

More Information

  • Series: B112
  • Torque Transmission: 17834
  • Axial Movement: No
  • Bore Tolerance: 130.08
  • Compliancy: RoHS
  • Component Bore Diameter: 130mm
  • Hub Pressure: 144
  • Installation Torque: 81 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M10 x 60
  • Self-Centering: Yes
  • Shaft Diameter: 90mm
  • Shaft Tolerance: 89.92
  • Taper: Double
  • Thrust: 396302

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 B112 35mm

B-LOC B112 35mm

More Information

  • Series: B112
  • Torque Transmission: 1285
  • Axial Movement: No
  • Bore Tolerance: 60.05
  • Compliancy: RoHS
  • Component Bore Diameter: 60mm
  • Hub Pressure: 95
  • Installation Torque: 16 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M6 x 45
  • Self-Centering: Yes
  • Shaft Diameter: 35mm
  • Shaft Tolerance: 34.95
  • Taper: Double
  • Thrust: 73440

Image of B-LOC B112 48mm

B-LOC B112 48mm

More Information

  • Series: B112
  • Torque Transmission: 3958
  • 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: 48mm
  • Shaft Tolerance: 47.95
  • Taper: Double
  • Thrust: 164918
  • Page:
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