Shaft/Hub Locking Devices

Keyless Shaft-Hub Locking Devices

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Keyless shaft-hub locking devices are not new technology, but Miki Pulley has developed and enhanced the Posi-Lock design and method of manufacture to deliver a superior locking device at low cost. 

To install, simply slide the Posi-Lock over the shaft, and slip the sprocket or pulley onto the Posi-Lock body.  When the screws are tightened, two opposing wedge structures are compressed into each other, creating a slight interference fit. 

Using a shaft locking device in lieu of a keyway has many benefits, including: less machine time, easy install and disassembly, even radial surface pressure, and higher torque value.

Keyless Shaft-Hub Locking Device Applications

Contact Us for Keyless Shaft/Hub Locking Devices

Contact Miki Pulley for more information or request a quote today!


PSL-K
PSL-G
PSL-D
PSL-K Model PSL-G Model PSL-D Model PSL-M Model

PSL-K model

PSL-K Model

The PSL-K is a positive locking device for holding a hub onto a shaft. This model is flanged, which better exposes the compression screws.

  • Hole diameter range: 0.236” – 1.654” (6mm – 42mm)
  • Max allowable torque: 553.17 ft-lbs (750 Nm)
  • Max permissible axial stress: 26552.24 ft-lbs (36000 Nm)
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PSL-G model

PSL-G Model

The PSL-G model is not flanged, therefore it is recessed within the hub. This saves space and allows for easy install and disassembly.

  • Hole diameter range: 0.236” – 1.654” (6mm – 42mm)
  • Max allowable torque: 553.17 ft-lbs (750 Nm)
  • Max permissible axial stress: 26552.24 ft-lbs (36000 Nm)
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PSL-D model

PSL-D Model

The PSL-D model is not flanged, therefore it is recessed within the hub.  This saves space and allows for easy install and disassembly. 

  • Hole diameter range:  0.236” – 1.654”  (6mm – 42mm)
  • Max allowable torque:  553.17 ft-lbs  (750 Nm)
  • Max permissible axial stress:   26552.24 ft-lbs (36000 Nm)
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 PSL-M Model

The PSL-M model is employs a counter step on the flange which aides in centering the device during installation.

  • Hole diameter range: 0.787” – 1.969” (20mm – 50mm)
  • Max allowable torque: 1257.50 ft-lbs (1,705 Nm)
  • Max rated thrust: 15,332 lbs (68,200 N)
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