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 B103 2-3/8"

  • Series: B103
  • Torque Transmission: 2403 ft lb
  • Axial Movement: Approximately 0.032"
  • Bore Tolerance: 3.545
  • Compliancy: RoHS
  • Component Bore Diameter: 3.543"
  • Hub Pressure: 23090
  • 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 3/8"
  • Shaft Tolerance: 2.373
  • Taper: Single
  • Thrust: 24286

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 B103 1-7/8"

  • Series: B103
  • Torque Transmission: 1660 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: 1 7/8"
  • Shaft Tolerance: 1.873
  • Taper: Single
  • Thrust: 21250

Image of B-LOC B106 170mm

  • Series: B106
  • Torque Transmission: 34437
  • Axial Movement: No
  • Bore Tolerance: 225.08
  • Compliancy: RoHS
  • Component Bore Diameter: 225mm
  • Hub Pressure: 109
  • 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: 170mm
  • Shaft Tolerance: 169.92
  • Taper: Single
  • Thrust: 405140

Image of B-LOC B106 140mm

  • Series: B106
  • Torque Transmission: 21270
  • Axial Movement: No
  • Bore Tolerance: 190.08
  • Compliancy: RoHS
  • Component Bore Diameter: 190mm
  • Hub Pressure: 125
  • 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: 140mm
  • Shaft Tolerance: 139.92
  • Taper: Single
  • Thrust: 303855

Image of B-LOC B103 2-1/8"

  • Series: B103
  • Torque Transmission: 2150 ft lb
  • Axial Movement: Approximately 0.032"
  • Bore Tolerance: 3.348
  • Compliancy: RoHS
  • Component Bore Diameter: 3.346"
  • Hub Pressure: 24448
  • 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 1/8"
  • Shaft Tolerance: 2.123
  • Taper: Single
  • Thrust: 24286

Image of B-LOC B103 2-1/2"

  • Series: B103
  • Torque Transmission: 2846 ft lb
  • Axial Movement: Approximately 0.032"
  • Bore Tolerance: 3.742
  • Compliancy: RoHS
  • Component Bore Diameter: 3.74"
  • Hub Pressure: 24609
  • 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 1/2"
  • Shaft Tolerance: 2.498
  • Taper: Single
  • Thrust: 27322

Image of B-LOC B106 2-7/8"

  • Series: B106
  • Torque Transmission: 3573
  • Axial Movement: No
  • Bore Tolerance: 4.53
  • Compliancy: RoHS
  • Component Bore Diameter: 4.528"
  • Hub Pressure: 18496
  • 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: 2 7/8"
  • Shaft Tolerance: 2.873
  • Taper: Single
  • Thrust: 29831

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 B106 120mm

  • Series: B106
  • Torque Transmission: 13366
  • Axial Movement: No
  • Bore Tolerance: 165.08
  • Compliancy: RoHS
  • Component Bore Diameter: 165mm
  • Hub Pressure: 138
  • Installation Torque: 144 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M12 x 35
  • Self-Centering: Yes
  • Shaft Diameter: 120mm
  • Shaft Tolerance: 119.92
  • Taper: Single
  • Thrust: 222768

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 B106 3-3/8"

  • Series: B106
  • Torque Transmission: 4719
  • Axial Movement: No
  • Bore Tolerance: 4.924
  • Compliancy: RoHS
  • Component Bore Diameter: 4.921"
  • Hub Pressure: 19144
  • 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 3/8"
  • Shaft Tolerance: 3.372
  • Taper: Single
  • Thrust: 33559

Image of B-LOC B106 3"

B-LOC B106 3"

More Information

  • Series: B106
  • Torque Transmission: 3729
  • Axial Movement: No
  • Bore Tolerance: 4.531
  • Compliancy: RoHS
  • Component Bore Diameter: 4.724"
  • Hub Pressure: 17726
  • 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"
  • Shaft Tolerance: 2.997
  • Taper: Single
  • Thrust: 29831

Image of B-LOC B103 180mm

  • Series: B103
  • Torque Transmission: 46989 Nm
  • Axial Movement: Approximately 0.8 mm
  • Bore Tolerance: 235.08
  • Compliancy: RoHS
  • Component Bore Diameter: 235mm
  • Hub Pressure: 134
  • Installation Torque: 183 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M14 x 40
  • Self-Centering: Yes
  • Shaft Diameter: 180mm
  • Shaft Tolerance: 179.92
  • Taper: Single
  • Thrust: 522099

Image of B-LOC B112 2-1/4"

  • Series: B112
  • Torque Transmission: 4310
  • 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 1/4"
  • Shaft Tolerance: 2.248
  • Taper: Double
  • Thrust: 45974

Image of B-LOC B103 160mm

  • Series: B103
  • Torque Transmission: 38287 Nm
  • Axial Movement: Approximately 0.8 mm
  • Bore Tolerance: 210.08
  • Compliancy: RoHS
  • Component Bore Diameter: 210mm
  • Hub Pressure: 178
  • Installation Torque: 183 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M14 x 40
  • Self-Centering: Yes
  • Shaft Diameter: 160mm
  • Shaft Tolerance: 159.92
  • Taper: Single
  • Thrust: 478591
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