B-LOC Keyless Bushings

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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 3-1/4"

  • Series: B103
  • Torque Transmission: 6000 ft lb
  • Axial Movement: Approximately 0.032"
  • Bore Tolerance: 4.924
  • Compliancy: RoHS
  • Component Bore Diameter: 4.921"
  • Hub Pressure: 25277
  • 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 1/4"
  • Shaft Tolerance: 3.247
  • Taper: Single
  • Thrust: 44311

Image of B-LOC B103 3-15/16"

  • Series: B103
  • Torque Transmission: 9944 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: 3 15/16"
  • Shaft Tolerance: 3.9345
  • Taper: Single
  • Thrust: 60608

Image of B-LOC B103 45mm

B-LOC B103 45mm

More Information

  • Series: B103
  • Torque Transmission: 2133 Nm
  • Axial Movement: Approximately 0.8 mm
  • Bore Tolerance: 75.05
  • Compliancy: RoHS
  • Component Bore Diameter: 75mm
  • Hub Pressure: 168
  • Installation Torque: 34 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 25
  • Self-Centering: Yes
  • Shaft Diameter: 45mm
  • Shaft Tolerance: 44.95
  • Taper: Single
  • Thrust: 94822

Image of B-LOC B106 65mm

B-LOC B106 65mm

More Information

  • Series: B106
  • Torque Transmission: 3016
  • 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: 65mm
  • Shaft Tolerance: 64.95
  • Taper: Single
  • Thrust: 92786

Image of B-LOC B103 3-3/8"

  • Series: B103
  • Torque Transmission: 6231 ft lb
  • Axial Movement: Approximately 0.032"
  • Bore Tolerance: 4.924
  • Compliancy: RoHS
  • Component Bore Diameter: 4.921"
  • Hub Pressure: 25277
  • 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 3/8"
  • Shaft Tolerance: 3.372
  • Taper: Single
  • Thrust: 44311

Image of B-LOC B106 3-15/16"

  • Series: B106
  • Torque Transmission: 7322
  • Axial Movement: No
  • Bore Tolerance: 5.318
  • 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: 3 15/16"
  • Shaft Tolerance: 3.9345
  • Taper: Single
  • Thrust: 44627

Image of B-LOC B106 90mm

B-LOC B106 90mm

More Information

  • Series: B106
  • Torque Transmission: 6689
  • Axial Movement: No
  • Bore Tolerance: 130.08
  • Compliancy: RoHS
  • Component Bore Diameter: 130mm
  • Hub Pressure: 126
  • 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: 90mm
  • Shaft Tolerance: 89.92
  • Taper: Single
  • Thrust: 148643

Image of B-LOC B103 190mm

  • Series: B103
  • Torque Transmission: 61999 Nm
  • Axial Movement: Approximately 0.8 mm
  • Bore Tolerance: 250.08
  • Compliancy: RoHS
  • Component Bore Diameter: 250mm
  • Hub Pressure: 157
  • 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: 190mm
  • Shaft Tolerance: 189.92
  • Taper: Single
  • Thrust: 652624

Image of B-LOC B106 55mm

B-LOC B106 55mm

More Information

  • Series: B106
  • Torque Transmission: 2268
  • Axial Movement: No
  • Bore Tolerance: 85.05
  • Compliancy: RoHS
  • Component Bore Diameter: 85mm
  • Hub Pressure: 129
  • 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: 55mm
  • Shaft Tolerance: 54.95
  • Taper: Single
  • Thrust: 82476

Image of B-LOC B103 3-3/4"

  • Series: B103
  • Torque Transmission: 7693 ft lb
  • Axial Movement: Approximately 0.032"
  • Bore Tolerance: 5.318
  • Compliancy: RoHS
  • Component Bore Diameter: 5.315"
  • Hub Pressure: 26005
  • 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 3/4"
  • Shaft Tolerance: 3.747
  • Taper: Single
  • Thrust: 49234

Image of B-LOC B106 85mm

B-LOC B106 85mm

More Information

  • Series: B106
  • Torque Transmission: 6317
  • Axial Movement: No
  • Bore Tolerance: 125.08
  • Compliancy: RoHS
  • Component Bore Diameter: 125mm
  • Hub Pressure: 131
  • 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: 85mm
  • Shaft Tolerance: 84.92
  • Taper: Single
  • Thrust: 148643

Image of B-LOC B103 65mm

B-LOC B103 65mm

More Information

  • Series: B103
  • Torque Transmission: 3962 Nm
  • Axial Movement: Approximately 0.8 mm
  • Bore Tolerance: 95.05
  • Compliancy: RoHS
  • Component Bore Diameter: 95mm
  • Hub Pressure: 170
  • Installation Torque: 34 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 25
  • Self-Centering: Yes
  • Shaft Diameter: 65mm
  • Shaft Tolerance: 64.95
  • Taper: Single
  • Thrust: 121914

Image of B-LOC B103 75mm

B-LOC B103 75mm

More Information

  • Series: B103
  • Torque Transmission: 6591 Nm
  • Axial Movement: Approximately 0.8 mm
  • Bore Tolerance: 115.05
  • Compliancy: RoHS
  • Component Bore Diameter: 115mm
  • Hub Pressure: 169
  • Installation Torque: 68 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: 175750

Image of B-LOC B103 55mm

B-LOC B103 55mm

More Information

  • Series: B103
  • Torque Transmission: 2980 Nm
  • Axial Movement: Approximately 0.8 mm
  • Bore Tolerance: 85.05
  • Compliancy: RoHS
  • Component Bore Diameter: 85mm
  • Hub Pressure: 169
  • Installation Torque: 34 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M8 x 25
  • Self-Centering: Yes
  • Shaft Diameter: 55mm
  • Shaft Tolerance: 54.95
  • Taper: Single
  • Thrust: 108368
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