(1) The rolling race of the slewing bearing had been filled with No.2 Lithium based grease (GB7324-1994) before delivery. The bearings should be filled with new grease before operation and the quantity of grease depends on your working conditions.
(2) Generally, it is necessary to fill with grease once every 100 hours for ball-type bearing, once every 50 hours for roller-type bearing and once every week for those under the special working condition such as at the torrid zone, high humidity, severe dust, large temperature variation and long continuing working time. It should be filled with new and enough grease before and after the machine being not working for a long time. The raceway should be full of grease at every time of lubricating and turn the slewing ring bearing slowly to make sure that the grease is filled evenly.
(3) Clear the face of teeth once every 10 days to keep it clean and lubricate it with a little of grease. There are many different conditions for different customers, so you should choose the most suitable lubricant.
(4) After the slewing ring being operated for 100 hours, you should check the pre-tightening tension of bolts. Then check them once every 500 hours in order to make sure that they have enough pre-tightening. Generally, you should change them with new ones after 7 years or 14000 operating hours.
(5) During the operation of the slewing bearings, if there is any noise, impact or power's sudden rising, you should stop and inspect it at once to obviate the obstacle, and sometimes, it is necessary to disassemble it for inspection.
(6) During the operation of the slewing ring bearings, being directly in the sunshine for long time is forbidden. Washing and cleaning the turntable bearing directly with water is forbidden in order to avoid the water entering into the raceway. Any hard material accessing or entering in the engaging area of gear is also forbidden.
(7) Often check the seal to make sure it is in good condition. Replace it with a new one if there is any break or damage on it, restore it in time if it has broken off from the race of seal.