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 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 B106 70mm

B-LOC B106 70mm

More Information

  • Series: B106
  • Torque Transmission: 4624
  • Axial Movement: No
  • Bore Tolerance: 110.05
  • Compliancy: RoHS
  • Component Bore Diameter: 110mm
  • Hub Pressure: 133
  • 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: 70mm
  • Shaft Tolerance: 69.95
  • Taper: Single
  • Thrust: 132127

Image of B-LOC B106 75mm

B-LOC B106 75mm

More Information

  • Series: B106
  • Torque Transmission: 4955
  • Axial Movement: No
  • Bore Tolerance: 115.05
  • Compliancy: RoHS
  • Component Bore Diameter: 115mm
  • Hub Pressure: 127
  • 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: 75mm
  • Shaft Tolerance: 74.95
  • Taper: Single
  • Thrust: 132127

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 B112 65mm

B-LOC B112 65mm

More Information

  • Series: B112
  • Torque Transmission: 6700
  • Axial Movement: No
  • Bore Tolerance: 95.05
  • Compliancy: RoHS
  • Component Bore Diameter: 95mm
  • Hub Pressure: 131
  • 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: 65mm
  • Shaft Tolerance: 64.95
  • Taper: Double
  • Thrust: 206148

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 B106 63mm

B-LOC B106 63mm

More Information

  • Series: B106
  • Torque Transmission: 2923
  • Axial Movement: No
  • Bore Tolerance: 95.05
  • Compliancy: RoHS
  • Component Bore Diameter: 95mm
  • Hub Pressure: 130
  • 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: 63mm
  • Shaft Tolerance: 62.95
  • Taper: Single
  • Thrust: 92786

Image of B-LOC B112 60mm

B-LOC B112 60mm

More Information

  • Series: B112
  • Torque Transmission: 6184
  • Axial Movement: No
  • Bore Tolerance: 90.05
  • Compliancy: RoHS
  • Component Bore Diameter: 90mm
  • Hub Pressure: 138
  • 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: 60mm
  • Shaft Tolerance: 59.95
  • Taper: Double
  • Thrust: 206148

Image of B-LOC B400 75mm

B-LOC B400 75mm

More Information

  • Series: B400
  • Torque Transmission: 6300
  • Axial Movement: No
  • Bore Tolerance: 115.08
  • Component Bore Diameter: 115mm
  • Hub Pressure: 161
  • 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: 75mm
  • Shaft Tolerance: 74.92
  • Taper: Double
  • Thrust: 167988

Image of B-LOC B112 40mm

B-LOC B112 40mm

More Information

  • Series: B112
  • Torque Transmission: 2886
  • Axial Movement: No
  • Bore Tolerance: 75.05
  • Compliancy: RoHS
  • Component Bore Diameter: 75mm
  • Hub Pressure: 150
  • Installation Torque: 41 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 45
  • Self-Centering: Yes
  • Shaft Diameter: 40mm
  • Shaft Tolerance: 39.95
  • Taper: Double
  • Thrust: 144304

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 B112 45mm

B-LOC B112 45mm

More Information

  • Series: B112
  • Torque Transmission: 3247
  • Axial Movement: No
  • Bore Tolerance: 75.05
  • Compliancy: RoHS
  • Component Bore Diameter: 75mm
  • Hub Pressure: 150
  • Installation Torque: 41 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 45
  • Self-Centering: Yes
  • Shaft Diameter: 45mm
  • Shaft Tolerance: 44.95
  • Taper: Double
  • Thrust: 144304

Image of B-LOC B103 3-1/2"

  • Series: B103
  • Torque Transmission: 6462 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 1/2"
  • Shaft Tolerance: 3.497
  • Taper: Single
  • Thrust: 44311

Image of B-LOC B103 4"

B-LOC B103 4"

More Information

  • Series: B103
  • Torque Transmission: 10101 ft lb
  • Axial Movement: Approximately 0.032"
  • Bore Tolerance: 5.712
  • Compliancy: RoHS
  • Component Bore Diameter: 5.709"
  • Hub Pressure: 27512
  • Installation Torque: 90 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: 60608

Image of B-LOC B400 4"

B-LOC B400 4"

More Information

  • Series: B400
  • Torque Transmission: 9621
  • Axial Movement: No
  • Bore Tolerance: 5.847
  • Component Bore Diameter: 5.843"
  • Hub Pressure: 25602
  • 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: 4"
  • Shaft Tolerance: 3.9335
  • Taper: Double
  • Thrust: 57726
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