Parker Hannifin
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Motor Shaft Features and Parker Gearhead Mounting

All Parker Bayside Gearhead inputs are coupled to the motor shaft via the patented clamp-on split pinion design.  The split-collar clamps offer holding torques 5 to 25 times greater than the peak torque of most servo motors.  Due to the nature of the clamping design, maximum holding torque is achieved using a smooth motor shaft with no features such as keyways or flats.  If your motor shaft has a key installed in the keyway of the shaft, it must be removed before installation of the Parker Gearhead.  We DO NOT recommend mounting a Parker gearhead to a motor shaft which has a double flat.  Furthermore, motor shafts which are tapered will NOT work with the clamp on pinon design of Parker Bayside Gearheads.  Below is a pictorial representation of most common types of shaft features and their applicable use with Parker Gearheads.

je 03/28/14