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Internal Hardened Gear Single Row Ball Slewing Bearing for Excavator

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Slewing bearing used in excavator and provide a rotate world,which makes machine flexible and powerful
  • 013 SERIES

  • XZWD

Slewing bearing is widely used in construction machinery, especially excavator. The feature of excavator turntable bearing is with hardened inner gear and the common diameter ranges from 1m-2m.


More than 96% of slewing ring failure could be avoided by following simple maintenance tips.

Grease regularly.Apply a liberal shot of extreme-pressure grease to the fittings around the bearing's circumference at intervals recommended in the operator's manual.

Purge with grease.

Pump grease into the bearing until you see old grease squeeze past the seal. Purged grease can help carry any contaminants out of the bearing.

Inspect the grease.

Rub some of the purged grease between your thumb and forefinger. If you see or feel grit or metal chips in it, there may be a bearing problem.

Honor load charts.

Even slight overloads can dimple the bearing race. One 1/1000 of an inch depression will worsen with subsequent loads and cause eventual failure.

Avoid repetitive, heavy loads.

Lifting with the boom and undercarriage in the same position, such as repetitive curbside digging with an excavator, can put a dimple in the bearing race close to the uneven load. If possible, change the angle of approach from job to job.

Predict failure and repair the bearing.
If the turning torque of the bearing increases substantially, or if you notice a clicking or grinding noise when rotating the structure, grease the unit and have some of the purged lubricant analyzed for wear metals.


In order to ensure the quality, we purchase best quality raw material, use advanced production equipment and technology and conduct strict quality control.

Below are part of excavator slewing ring models we provide:



More details, please contact us!


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Xuzhou Wanda Slewing Bearing Co.,Ltd.
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Xuzhou Wanda Slewing Bearing Co.,Ltd.
 Add: No.8,Dianchang North Road,High-tech Industrial Development Zone,Xuzhou City,Jiangsu Province,China.
  丨 +86-180 2053 7858