MTS Series 609 Alignment Fixture - Manual (Page 27)

Series 609 Alignment Fixture Product Information Installation 27
To reduce the hazards in this procedure:
• Ensure that you set and enable displacement interlocks to limit the
actuator’s movement.
• Ensure that the crosshead is locked.
• Reduce the load unit’s hydraulic pressure to low.
• Keep your hands out of the crush zone except when performing the steps
needed to complete this procedure.
C. Attach the dial indicator to the actuator.
On a low profile force transducer, adjust the indicator to take the
reading along the edge of the loading surface.
On a cylindrical style force transducer, adjust the indicator so that its
stylus just touches the polished bottom edge of the transducer.
D. Zero the indicator.
E. Slowly turn the actuator to rotate the indicator 360 ° around the force
transducer.
Note The actuator cannot rotate on axial-torsional load units. Either disable
the antirotate hardware or move the dial indicator around the actuator.
Stop frequently to take indicator readings. Keep your hands off the
actuator and indicator when taking the readings. Compute the total
indicator runout (TIR): take the maximum dial indicator reading and
subtract the minimum dial indicator reading.
L OAD U NIT R ATING TIR
250 kN (55 kip) or less >0.038 mm (0.0015 in)
500 kN (100 kip) >0.051 mm (0.0020 in)
Zero
Read along
the inside edge.
360°
Zero
Read along
the edge.
360°