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 80mm

B-LOC B106 80mm

More Information

  • Series: B106
  • Torque Transmission: 5285
  • Axial Movement: No
  • Bore Tolerance: 120.08
  • Compliancy: RoHS
  • Component Bore Diameter: 120mm
  • Hub Pressure: 122
  • 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: 80mm
  • Shaft Tolerance: 79.92
  • Taper: Single
  • Thrust: 132127

Image of B-LOC B103 70mm

B-LOC B103 70mm

More Information

  • Series: B103
  • Torque Transmission: 6151 Nm
  • Axial Movement: Approximately 0.8 mm
  • Bore Tolerance: 110.05
  • Compliancy: RoHS
  • Component Bore Diameter: 110mm
  • Hub Pressure: 177
  • 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: 70mm
  • Shaft Tolerance: 69.95
  • Taper: Single
  • Thrust: 175750

Image of B-LOC B103 3"

B-LOC B103 3"

More Information

  • Series: B103
  • Torque Transmission: 4923 ft lb
  • Axial Movement: Approximately 0.032"
  • Bore Tolerance: 4.727
  • Compliancy: RoHS
  • Component Bore Diameter: 4.724"
  • Hub Pressure: 23404
  • 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"
  • Shaft Tolerance: 2.997
  • Taper: Single
  • Thrust: 39387

Image of B-LOC B106 3-3/4"

  • Series: B106
  • Torque Transmission: 5826
  • Axial Movement: No
  • Bore Tolerance: 5.121
  • Compliancy: RoHS
  • Component Bore Diameter: 5.315"
  • Hub Pressure: 19695
  • 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 3/4"
  • Shaft Tolerance: 3.747
  • Taper: Single
  • Thrust: 37288

Image of B-LOC B103 95mm

B-LOC B103 95mm

More Information

  • Series: B103
  • Torque Transmission: 10435 Nm
  • Axial Movement: Approximately 0.8 mm
  • Bore Tolerance: 135.08
  • Compliancy: RoHS
  • Component Bore Diameter: 135mm
  • Hub Pressure: 180
  • 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: 95mm
  • Shaft Tolerance: 94.95
  • Taper: Single
  • Thrust: 219688

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 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 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 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 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 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 80mm

B-LOC B103 80mm

More Information

  • Series: B103
  • Torque Transmission: 7030 Nm
  • Axial Movement: Approximately 0.8 mm
  • Bore Tolerance: 120.08
  • Compliancy: RoHS
  • Component Bore Diameter: 120mm
  • Hub Pressure: 162
  • 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: 80mm
  • Shaft Tolerance: 79.95
  • Taper: Single
  • Thrust: 175750

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 B106 95mm

B-LOC B106 95mm

More Information

  • Series: B106
  • Torque Transmission: 7845
  • Axial Movement: No
  • Bore Tolerance: 135.08
  • Compliancy: RoHS
  • Component Bore Diameter: 135mm
  • Hub Pressure: 135
  • 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: 95mm
  • Shaft Tolerance: 94.92
  • Taper: Single
  • Thrust: 165159

Image of B-LOC B103 2-11/16"

  • Series: B103
  • Torque Transmission: 4411 ft lb
  • Axial Movement: Approximately 0.032"
  • Bore Tolerance: 4.333
  • Compliancy: RoHS
  • Component Bore Diameter: 4.331"
  • Hub Pressure: 25532
  • 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: 2 11/16"
  • Shaft Tolerance: 2.6855
  • Taper: Single
  • Thrust: 39387
Back To Top