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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 >>

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    Image of B-LOC B103 3/4"

    B-LOC B103 3/4"

    More Information

    • Series: B103
    • Torque Transmission: 247 ft lb
    • Axial Movement: Approximately 0.032"
    • Bore Tolerance: 1.852
    • Compliancy: RoHS
    • Component Bore Diameter: 1.85"
    • Hub Pressure: 16959
    • Installation Torque: 10 ft lb
    • Internal/ External: Internal
    • Material: Steel
    • Metric/Inch: Inch
    • Releasing/ Locking: Locking
    • Screw Size: M6 x 20
    • Self-Centering: Yes
    • Shaft Diameter: 3/4"
    • Shaft Tolerance: 0.748
    • Taper: Single
    • Thrust: 7918

    Image of B-LOC B106 5/8"

    B-LOC B106 5/8"

    More Information

    • Series: B106
    • Axial Movement: No
    • Bore Tolerance: 1.262"
    • Compliancy: RoHS
    • Component Bore Diameter: 1.26"
    • Hub Pressure: 8007
    • Installation Torque: 3.5 ft lb
    • Internal/ External: Internal
    • Material: Steel
    • Metric/Inch: Inch
    • Releasing/ Locking: Locking
    • Screw Size: M4 x 12
    • Self-Centering: Yes
    • Shaft Diameter: 5/8"
    • Shaft Tolerance: 0.623
    • Taper: Single
    • Thrust: 2096

    Image of B-LOC B400 3/4"

    B-LOC B400 3/4"

    More Information

    • Series: B400
    • Torque Transmission: 234
    • Axial Movement: No
    • Bore Tolerance: 1.852
    • Component Bore Diameter: 1.850"
    • Hub Pressure: 16067
    • Installation Torque: 11 ft lb
    • Internal/ External: Internal
    • Material: Steel
    • Metric/Inch: Inch
    • Releasing/ Locking: Releasing
    • Screw Size: M6 x 18
    • Self-Centering: No
    • Shaft Diameter: 3/4"
    • Shaft Tolerance: 0.748
    • Taper: Double
    • Thrust: 7501

    Image of B-LOC B106 3/4"

    B-LOC B106 3/4"

    More Information

    • Series: B106
    • Axial Movement: No
    • Bore Tolerance: 1.852
    • Compliancy: RoHS
    • Component Bore Diameter: 1.85"
    • Hub Pressure: 12845
    • Installation Torque: 12 ft lb
    • Internal/ External: Internal
    • Material: Steel
    • Metric/Inch: Inch
    • Releasing/ Locking: Locking
    • Screw Size: M6 x 20
    • Self-Centering: Yes
    • Shaft Diameter: 3/4"
    • Shaft Tolerance: 0.748
    • Taper: Single
    • Thrust: 5997
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