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Four Point Contact Slewing BearingsSslewing bearing code is composed of three parts: basic code, middle code and post code. The Four Point Contact Slewing Bearings currently produced by can be roughly divided into the following structural types：Toothless Four Point Contact Slewing Bearings、External-toothed Four Point Contact Slewing Bearings、Internal-toothed Four Point Contact Slewing Bearings. 
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Shandong Wanyu Bearing Group Corp., Ltd.
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+86 0531-85663423
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