MTS Series 646 Hydraulic Collet Grips - Manual (Page 43)

Series 646 Hydraulic Collet Grips Installation 43
Torque the socket head screws first to 10%, then to 50%, and finally to
100% of the torque specified on the attachment kit drawing.
C. Remove the socket head cap screws from the upper coupling and place
the screws and coupling halves within easy reach and oriented properly
for installation on the grips.
Note The label on the coupling indentifies which component should be
connected to each side of the coupling.
D. Place a wooden spacer (a wood block or piece of plywood) on top of
the lower grip. The wooden spacer should be large enough to cover the
diameter of the grip.
Note You will need help to balance the upper grip on the wooden spacer on
the lower grip. You will need to construct a proper support or have
someone available to help balance the upper grip on the lower grip.
E. Carefully position the grip on top of the wooden spacer on the lower
grip.
You might need to insert double swivel eyebolts into the threaded holes
on the grip chamber. Attach a lifting device to the double swivel
eyebolts and position the grip on top of the lower grip.
F. Turn on the hydraulic pressure and raise the actuator or lower the
crosshead to position the grip so it can be aligned with the force
transducer adapter. Hold the grip snug against the end of the adapter.
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6
8
4 3
7
5
2
Load Unit Crosshead
Load Unit Base Plate
Load Unit
Columns
Lower Grip
Lower
Coupling
Actuator
Piston Rod
Upper
Grip
Upper
Coupling
Adapter
Plate
Force
Transducer
Wood
Block