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 >>

Can’t find what you're looking for?  Please download our Keyless Locking Devices Catalog to view our full product offering.

To compare items, select up to 4 and click here

Image of B-LOC B106 45mm

B-LOC B106 45mm

More Information

  • Series: B106
  • Torque Transmission: 1624
  • Axial Movement: No
  • Bore Tolerance: 75.05
  • Compliancy: RoHS
  • Component Bore Diameter: 75mm
  • Hub Pressure: 128
  • 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: 45mm
  • Shaft Tolerance: 44.95
  • Taper: Single
  • Thrust: 72167

Image of B-LOC B400 50mm

B-LOC B400 50mm

More Information

  • Series: B400
  • Torque Transmission: 2252
  • Axial Movement: No
  • Bore Tolerance: 80.08
  • Component Bore Diameter: 80mm
  • Hub Pressure: 149
  • Installation Torque: 35 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M8 x 22
  • Self-Centering: No
  • Shaft Diameter: 50mm
  • Shaft Tolerance: 49.92
  • Taper: Double
  • Thrust: 90071

Image of B-LOC B400 38mm

B-LOC B400 38mm

More Information

  • Series: B400
  • Torque Transmission: 1116
  • Axial Movement: No
  • Bore Tolerance: 65.08
  • Component Bore Diameter: 65mm
  • Hub Pressure: 141
  • Installation Torque: 15 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M6 x 18
  • Self-Centering: No
  • Shaft Diameter: 38mm
  • Shaft Tolerance: 37.92
  • Taper: Double
  • Thrust: 58732

Image of B-LOC B400 28mm

B-LOC B400 28mm

More Information

  • Series: B400
  • Torque Transmission: 587
  • Axial Movement: No
  • Bore Tolerance: 55.08
  • Component Bore Diameter: 55mm
  • Hub Pressure: 119
  • Installation Torque: 15 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M6 x 18
  • Self-Centering: No
  • Shaft Diameter: 28mm
  • Shaft Tolerance: 27.92
  • Taper: Double
  • Thrust: 41952

Image of B-LOC B106 25mm

B-LOC B106 25mm

More Information

  • Series: B106
  • Torque Transmission: 394
  • Axial Movement: No
  • Bore Tolerance: 50.05
  • Compliancy: RoHS
  • Component Bore Diameter: 50mm
  • Hub Pressure: 98
  • Installation Torque: 16 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M6 x 20
  • Self-Centering: Yes
  • Shaft Diameter: 25mm
  • Shaft Tolerance: 24.95
  • Taper: Single
  • Thrust: 31481

Image of B-LOC B400 45mm

B-LOC B400 45mm

More Information

  • Series: B400
  • Torque Transmission: 2027
  • Axial Movement: No
  • Bore Tolerance: 75.08
  • Component Bore Diameter: 75mm
  • Hub Pressure: 159
  • Installation Torque: 35 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M8 x 22
  • Self-Centering: No
  • Shaft Diameter: 45mm
  • Shaft Tolerance: 44.92
  • Taper: Double
  • Thrust: 90071

Image of B-LOC B106 50mm

B-LOC B106 50mm

More Information

  • Series: B106
  • Torque Transmission: 1804
  • Axial Movement: No
  • Bore Tolerance: 80.05
  • Compliancy: RoHS
  • Component Bore Diameter: 80mm
  • Hub Pressure: 120
  • 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: 50mm
  • Shaft Tolerance: 49.95
  • Taper: Single
  • Thrust: 72167

Image of B-LOC B400 22mm

B-LOC B400 22mm

More Information

  • Series: B400
  • Torque Transmission: 369
  • Axial Movement: No
  • Bore Tolerance: 47.05
  • Component Bore Diameter: 47mm
  • Hub Pressure: 111
  • Installation Torque: 15 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M6 x 18
  • Self-Centering: No
  • Shaft Diameter: 22mm
  • Shaft Tolerance: 21.95
  • Taper: Double
  • Thrust: 33561

Image of B-LOC B400 42mm

B-LOC B400 42mm

More Information

  • Series: B400
  • Torque Transmission: 1892
  • Axial Movement: No
  • Bore Tolerance: 75.08
  • Component Bore Diameter: 75mm
  • Hub Pressure: 159
  • Installation Torque: 35 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M8 x 22
  • Self-Centering: No
  • Shaft Diameter: 42mm
  • Shaft Tolerance: 41.92
  • Taper: Double
  • Thrust: 90071

Image of B-LOC B106 32mm

B-LOC B106 32mm

More Information

  • Series: B106
  • Torque Transmission: 672
  • Axial Movement: No
  • Bore Tolerance: 60.05
  • Compliancy: RoHS
  • Component Bore Diameter: 60mm
  • Hub Pressure: 109
  • Installation Torque: 16 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M6 x 20
  • Self-Centering: Yes
  • Shaft Diameter: 32mm
  • Shaft Tolerance: 31.95
  • Taper: Single
  • Thrust: 41975

Image of B-LOC B106 19mm

B-LOC B106 19mm

More Information

  • Series: B106
  • Torque Transmission: 249
  • Axial Movement: No
  • Bore Tolerance: 47.05
  • Compliancy: RoHS
  • Component Bore Diameter: 47mm
  • Hub Pressure: 87
  • Installation Torque: 16 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M6 x 20
  • Self-Centering: Yes
  • Shaft Diameter: 19mm
  • Shaft Tolerance: 18.95
  • Taper: Single
  • Thrust: 26234

Image of B-LOC B400 18mm

B-LOC B400 18mm

More Information

  • Series: B400
  • Torque Transmission: 302
  • Axial Movement: No
  • Bore Tolerance: 47.05
  • Component Bore Diameter: 47mm
  • Hub Pressure: 111
  • Installation Torque: 15 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M6 x 18
  • Self-Centering: No
  • Shaft Diameter: 18mm
  • Shaft Tolerance: 17.95
  • Taper: Double
  • Thrust: 33561

Image of B-LOC B400 35mm

B-LOC B400 35mm

More Information

  • Series: B400
  • Torque Transmission: 881
  • Axial Movement: No
  • Bore Tolerance: 60.08
  • Component Bore Diameter: 60mm
  • Hub Pressure: 131
  • Installation Torque: 15 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M6 x 18
  • Self-Centering: No
  • Shaft Diameter: 35mm
  • Shaft Tolerance: 34.92
  • Taper: Double
  • Thrust: 50342

Image of B-LOC B106 38mm

B-LOC B106 38mm

More Information

  • Series: B106
  • Torque Transmission: 798
  • Axial Movement: No
  • Bore Tolerance: 65.05
  • Compliancy: RoHS
  • Component Bore Diameter: 65mm
  • Hub Pressure: 101
  • Installation Torque: 16 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Locking
  • Screw Size: M6 x 20
  • Self-Centering: Yes
  • Shaft Diameter: 38mm
  • Shaft Tolerance: 37.95
  • Taper: Single
  • Thrust: 41975

Image of B-LOC B400 19mm

B-LOC B400 19mm

More Information

  • Series: B400
  • Torque Transmission: 319
  • Axial Movement: No
  • Bore Tolerance: 47.05
  • Component Bore Diameter: 47mm
  • Hub Pressure: 111
  • Installation Torque: 15 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M6 x 18
  • Self-Centering: No
  • Shaft Diameter: 19mm
  • Shaft Tolerance: 18.95
  • Taper: Double
  • Thrust: 33561

Image of B-LOC B400 20mm

B-LOC B400 20mm

More Information

  • Series: B400
  • Torque Transmission: 335
  • Axial Movement: No
  • Bore Tolerance: 47.05
  • Component Bore Diameter: 47mm
  • Hub Pressure: 111
  • Installation Torque: 15 Nm
  • Internal/ External: Internal
  • Material: Steel
  • Metric/Inch: Metric
  • Releasing/ Locking: Releasing
  • Screw Size: M6 x 18
  • Self-Centering: No
  • Shaft Diameter: 20mm
  • Shaft Tolerance: 19.95
  • Taper: Double
  • Thrust: 33561
Back To Top