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B0301 B-LOC Shrink Disc 30-10

$41.15 Each


  • Free shipping on orders over $20
  • Typically ships in: 1 day
  • Weight: 0.7 lb

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Additional Description


The B-LOC SD10 Series 30-10 Shrink Disc is an external locking device that provides a high capacity, zero-backlash shaft to hub on shafts ranging from 3/4” to 0.967” in diameter by means of a mechanical interference fit and transmits between 177 ft lbs and 407 ft lbs of torque depending on the specific shaft size.

Best Suited For: Applications needing to connect a hollow shaft over a solid shaft. Commonly used on hollow output shaft gear boxes or flange couplings.

B-LOC SD10 Series 30-10 Shrink Discs are external locking devices that provide a zero-backlash frictional connection that will never wear or pound out and can accommodate high-torque, thrust, bending, and/or radial loads. The SD10 Series Shrink Discs are also extremely concentric and maintain a well-balanced mechanical interference fit. There is no axial movement during installation of this product.

• Extremely concentric and well-balanced mechanical interference fit
• No axial movement during installation

Features of Fenner Drives Keyless Bushings:

• Ability to transmit high torques
• True zero-backlash
• Less equipment downtime
• Ability to mount over existing keyways
• Complete axial and radial adjustability
• Simple installation, adjustment and removal

All Fenner Drives keyless locking devices operate using the simple wedge principle. An axial force is applied- by either a hex nut (Trantorque) or a series of annular screws (B-LOC)- to engage circular steel rings with 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.

Series: SD
Axial Movement: No
Installation Torque: 3.6 ft lb
Internal/ External: External
Material: Zinc Chromate/Chrome Plated Steel
Metric/Inch: Inch
Releasing/ Locking: Releasing
Screw Size: M5 x 18
Self-Centering: Yes
Shaft Diameter: .750-.967
Taper: Double
Torque Max: 407
Torque Min: 177

Return policy

Item must be unused.

Item must be in it's original package.

Restocking, shipping and handling fees may apply to any return with this manufacturer.

For more information please consult

Product's availability

State of California Proposition 65 Product Warning