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 500 mm (20") from the idler end block.
- 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 (MTB042 = 1.9 lbf ± 0.1 lbf/8.5 N, MTB055 = 3.0 lbf ± 0.1 lbf/13.3 N, MTB080 = 10.0 lbf ± 0.1 lbf/44.5 N).
- 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.