Slew drive solution provider-Unique Transmission

The wear and tear of the gear teeth can cause rotation clearances in the worm screw. It is therefore necessary to check that rotation after 700 hours of operation or every 6 months, so as not to exceed approximately 20° of free rotation.  In order to measure that rotational clearance, the motor must be disconnected and the screw turned manually, measuring the angle rotated by the screw with respect to a previously specified starting position.  The previously specified inspection interval must be reduced to 200 hours of operation if the clearance reaches approximately a 15° rotation. Should the clearance continue to increase, the inspection should be reduced to 50-100 hours of operation, and in the event that it exceeds the maximum permissible value the system must be replaced. Checking mounting bolts To compensate for possible settling, it is necessary to retighten the bolts to the prescribed torque. This shall be done after no more than 100 hours of operation and without external load

 Cleaning the slewing drive and the mounting structure: • Remove extraneous material from supporting surfaces (including paint residues, welding beads, burr formation). Clear corrosion protection coating from supporting surfaces of the slewing drive. Cleaning material does not penetrate into the slewing drive. Cleaning material that attacks the sealing material is not used. Applicable cleaning materials: Cold solvents (e.g. white spirit, diesel oil, Kaltryl KEV). Lubricating the slewing drive: • slewing drive are supplied fully lubricated. They shall be greased again prior to initial operation. It is essential to use the greases specified on the delivery drawing. Choice of mounting bolts: Prescribed sizes, number and quality grades shall be used. • Grip ratio (grip length to diameter of bolt) shall be observed from minimum ≥5 to maximum ≤10. • Bolts with a fully threaded shaft are not permissible. • The function and lifespan as well as the durability of the bolt connection are affecte