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Pneumatic Grips
Product Support: www.instron.com
Minimum pressure may be slightly higher or lower for any given grip due to age,
environmental conditions and use.
Be aware that even at these recommended initial grip pressures, the force exerted
by the closing grips can cause injury.
For example, a 10 kN grip closing at the default initial pressure of 15 psi exerts a
minimum force of 4kN (900 lbf). The same grip closing at 7 psi exerts a minimum force
of 1.9kN (420 lbf), still a significant force that can cause injury.
Be aware also that setting initial grip pressure too low may result in the grip not
closing completely at the initial grip pressure. This may cause a hazard when the
grips transition to full pressure.
If the grips do not close completely at the initial pressure, they will close at full force
when the grips transition to full pressure.
If the grips feature an air inlet flow adjustment control (see below), make sure that
the flow adjustment is set to fully open (screw fully counterclockwise).
Do not use the air inlet flow adjustment control to reduce air flow as you risk
transitioning from initial pressure to full pressure before the grips have closed. If the
Grip model number Grip capacity
Recommended initial grip
pressure - psi (bar)
2712-051 50 N 15 (1.03)
2712-052 250 N 12 (0.83)
2712-041 1 kN 9 (0.62)
2712-042 2 kN 5 (0.34)
2712-045 5 kN 8 (0.55)
2712-046 10 kN 7 (0.48)
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