Portfolio
Project Background – Mining Excavator Requires Swing Bearing Replacement
A mining contractor contacted KINTON PARTS after experiencing serious swing performance issues on their Caterpillar CAT 385C excavator, which had been operating under heavy-duty conditions for several years.
Problem Identified – Excessive Swing Play and Abnormal Noise
The machine plays a key role in continuous mining operations, so minimizing downtime was critical for the customer.
During inspection, the customer’s maintenance team reported:
- Increased swing clearance
- Abnormal rotation noise
- Reduced operational stability
- Wear on the slewing bearing raceway
These issues began affecting work efficiency and machine safety, making slewing bearing replacement unavoidable.
KINTON PARTS Solution – OEM Standard Swing Bearing Supply
After confirming machine details and installation dimensions, KINTON PARTS supplied a high-strength OEM replacement swing bearing, fully compatible with CAT 385C specifications.
Our solution included:
- OEM-compatible manufacturing tolerance
- Heat-treated raceway for heavy load durability
- High-strength gear processing
- Fast export delivery arrangement
- Installation support advice
This ensured the customer could complete replacement quickly and return the machine to operation.
Installation Process – Smooth Replacement on Site
Loosen and remove the slewing bearing connecting bolts gradually in a diagonal sequence, using an impact wrench or pneumatic wrench. Slowly lift the old slewing bearing assembly using hoisting equipment. After removing the old bearing, thoroughly clean both support surfaces and inspect for cracks, deformation, or wear.
Install the new slewing bearing
Use hoisting equipment to align the new bearing with the holes and slowly place it in the correct position.
Tighten the slewing bearing bolts
Manually install all bolts, then tighten them one by one in a diagonal sequence to the recommended torque value.
Fill with slewing bearing grease
Add grease inside the slewing bearing, ensuring complete lubrication.
Assemble the upper section and chassis
Slowly lower the upper body to the chassis, confirming accurate positioning before tightening the connecting bolts.
Final Result – Machine Back to Work with Stable Performance
After replacement, the machine showed:
✔ Smooth swing rotation
✔ No abnormal noise
✔ Improved operating stability
✔ Reduced vibration
✔ Increased jobsite productivity
The customer expressed satisfaction and confirmed future cooperation for undercarriage and hydraulic spare parts supply.
Why Contractors Choose KINTON PARTS Swing Bearings
- OEM & aftermarket excavator parts supply
- Stable quality for mining & heavy-duty conditions
- Fast delivery for urgent replacements
- Compatible with major brands: CAT, Komatsu, Hitachi, Volvo, Doosan, and more
- Professional export experience worldwide
Need Swing Bearing for Your Excavator?
If your excavator shows swing play, noise, or unstable rotation, it may be time to replace the slewing bearing.
Related projects
