Shaft Locking Bushings - Zero-Max Inc


ETP is a clever setup and shaft locking device that is an ideal solution for both dynamic and static applications. Extremely simple, yet versatile, ETP is adept at handling both dynamic and static applications while saving time, trouble and money in the process. In today’s ever-changing manufacturing industries where more is demanded of less, reducing setup time at the front-end of a production job is the best place to start. ETP provides that front-end improvement.

The ETP is essentially a precision bushing that will accurately expand both the ID and OD at the same time when the single actuation screw is tightened.  Since the expansion is caused by the self-contained hydraulic pressure, the resulting force is even along all surfaces.  The bushing aligns precisely without axial movement as it is tightened. It positions very accurately in seconds.

Another key ETP feature is that it can be actuated thousands of times with repeatable accuracy and without any axial movement.  An Allen wrench is all that is required to mount and lock these bushings into place. They have sealed, clean lines that resist debris collection and clean easily without any special maintenance.

ETP is available in several models to fit the application. The ETP Express and Techno models both feature a single actuation screw. The Express handles a torque range from 40 to 6400 ft. lbs. while the Techno handles a torque range from 28,000 to 32,000 ft. lbs. Sizes available handle 15mm through 100 mm shafts with both operating well in temperature ranges from -22° to +180°F.


  • All exposed components are made of stainless steel material

  • Operation is the same as ETP Express with the same transmittable torque.

  • Easy to clean.

  • Contains food grade pressure medium.

  • Single screw installation

  • Can be installed in seconds

  • Operate on built-in hydraulics
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