Slewing Ring Bearing 800mm Single Row Ball Mini Excavator Swing Circle Sealed Unit

800 mm Single Row Ball Slewing Ring for 5-6 Ton Mini Excavators

Mini excavators live on tight sites, work in mud and are washed down with a hose at the end of the day. Their swing circles fail from water and grit far more often than from load. This ring is built around that reality.

It is 800 mm outside, 640 mm inside and 75 mm high, with 68 external gear teeth at module 8. The unit is sealed on both sides, filled with water resistant grease at assembly and shipped ready to bolt on.

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

Built for Small Machine Duty

• Water resistant grease fill. Handles wash-down cycles without emulsifying, which is the main cause of mini excavator swing noise.
• Sealed both faces. Keeps sand out of the ball path on landscaping and trenching work.
• Light enough for two people. 68 kg means a small workshop can install it without a crane.
• Pre-set clearance. No shimming, so a replacement takes a morning rather than a day.

Fitment and Service

Suits 5-6 ton class mini excavators with an 800 mm swing circle and 68 tooth gear. Measure the old ring across the outside diameter and count the teeth before ordering, since mini excavator frames vary widely between production years. Grease the gear teeth every 250 hours and the race every 500 hours.

Packing and Delivery

Each ring is foam packed inside a plywood case, 78 kg gross. Stock ships in five working days, minimum order two pieces. We keep the matching swing pinion in stock as well, because a worn pinion will damage a new ring within a few hundred hours.

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.