MTS Series 646 Hydraulic Collet Grips - Manual (Page 36)

Series 646 Hydraulic Collet Grips 36 Installation
Shims
If a specific orientation of the grips is required, shims are typically used to
achieve that desired orientation. Use the following table to determine the proper
shims.
Axial Grip Installation Procedure
The following procedure assumes the actuator is mounted in the base of the load
unit and the force transducer is mounted to the crosshead. If you have a load unit
with the actuator mounted to the crosshead, make the appropriate changes to the
following procedure.