Adjusting Belt Tension on MT Actuators

Belt tension is set at installation on the belt driven linear actuators and regular maintenance then becomes a big key to keeping them at top performance. It is a good practice to periodically check the belt tension and make sure that it is set properly. Follow these simple steps to adjust belt tension on the MTB series linear actuators.

• Remove and disconnect the drive mechanism from the actuator.
• Move the carriage to the point specified in the actuator’s written maintenance instructions. This point will vary depending on the model and size.
• Remove the cover plate over the belt tension adjustment screw at the idler end of the actuator.
• Remove the seal strip clamp from the idler end of the actuator.
• DO NOT CREASE the SEAL STRIP, but slide it back out of the way.
• Using a force gauge, determine the amount of existing deflection in the belt. Refer to the written instructions for the amount of deflection required for the specific model and size.
• Locate and loosen the set screw on the clamp collar. This will then allow movement of the belt tension adjustment screw.
• Adjust the belt tension adjustment screw to obtain the proper belt tension.
• Measure again with the force gauge to ensure that belt deflection is properly set.
• Tighten the set screw on the clamp collar to lock the adjustment screw into place.
• Use a medium-strength thread locker on all fasteners for steps 12 – 14.
• Re-install the belt tension adjustment screw cover plate.
• Slide the seal strip back into place.
• Re-install the seal strip clamp.
• Reconnect drive mechanism to the actuator.