Slewing Ring Bearing 880mm Sealed Single Row Ball for 7 Ton Mini Excavator Swing Circle

880 mm Sealed Slewing Ring for 7-8 Ton Mini Excavators

Seven to eight ton machines sit between the true mini class and full size utility excavators. The swing circle is bigger than a mini ring but the machine is still often washed down daily and worked in tight residential sites where noise matters.

This ring is 880 mm outside, 710 mm inside and 82 mm high, with 72 external gear teeth at module 9, 28 mounting holes of 16 mm and a sealed single row ball raceway.

Talk to our engineer on WhatsApp: +86 180 2625 4557 — send your machine model and serial number, and we confirm the slewing ring tooth count the same working day.

Specification

Advantages for Compact Utility Work

• Quiet running. Ground gear flanks and a sealed race reduce the swing noise that matters on residential sites.
• Wash-down tolerant. Water resistant grease and double lip seals survive daily cleaning.
• Two person installation. At 86 kg the ring can be handled with a small hoist or two fitters and a guide pin.
• Matching pinion available. Ordering ring and pinion together avoids the mismatch that shortens new ring life.

Fitment

Fits 7-8 ton class mini excavators with an 880 mm swing circle and 72 tooth gear. Because compact frames changed frequently between series, confirm the outer diameter and tooth count before ordering, or send a photo of the old ring beside a tape measure.

Packing and Delivery

Each ring ships foam lined in a plywood case, 96 kg gross, with the matching pinion packed separately if ordered. Stock leaves in five working days, minimum order two pieces.

Workshop and Production Capability

Every ring is machined, gear cut, induction hardened and ground in our Guangzhou workshop, then assembled, greased and preload checked on a three point bench before packing. The photos below show the production floor and inspection area that support this series.