A PCB PIEZOTRONICS DIV.
Standard Stud Mount Procedure
This mounting technique requires smooth, flat contact surfaces for proper operation and is recommended
for permanent and/or secure installations. Stud mounting is also recommended when testing at high
frequencies. Note: DO NOT attempt mounting on curved, rough or uneven surfaces, as the potential for
misalignment and limited contact surface may significantly reduce the sensor's upper operating frequency
range.
1.1 times sensor diameter
STEP 1 First, prepare a smooth, flat mounting surface, and then drill and tap a mounting hole in the center
of this area. Inspect the area, checking that there are no burrs or other foreign particles interfering with the
contact surface.
STEP 2 Wipe clean the mounting surface and spread on a light film of grease, oil or similar coupling fluid
prior to installation.
Figure 4 - mounting surface lubrication
Adding a coupling fluid improves vibration transmissibility by filling small voids in the mounting
surface and increasing the mounting stiffness. For semi-permanent mounting, substitute epoxy
for another type of adhesive.
STEP 3 HAND-tighten the sensor/mounting stud to the machine, then secure the sensor with a
torque wrench to the mounting surface by applying the recommended mounting torque (see
enclosed specification data sheet for proper mounting torque). It is important to use a torque
wrench during this step. Under-torquing the sensor may not adequately couple the device;
over-torquing may result in stud failure and possibly permanent damage.
PAGE 8
1/4-28 Stud
1/4-28 Captive Screw
A (in) B(in)
Torque (ft-lb)
0.250
0.350
2 to 5
0.250
0.350
2 to 5
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