⚙ Custom Engineering Solutions for Excavator Components

Need a specialized or hard-to-find part? At Growshine International, we offer comprehensive services for the **custom development and manufacturing** of a wide range of components, including **excavator slewing rings, slewing bearings, swing circles, slew gears, and turntable bearings**. Whether you need a specific tooth count, material, or internal/external gear configuration for Komatsu, Caterpillar, Hitachi, or any other major brand, our engineering team can deliver high-quality, customized solutions to meet your exact machinery requirements. Contact us today to discuss your custom excavator parts project!

Featured Excavator Slewing Ring Inventory

Below is a curated list of our most popular and essential **excavator slewing ring** and **slewing bearing** stock. We ensure every **swing circle** and **slew gear** is manufactured for optimal performance and longevity. Don't let a failed **turntable bearing** sideline your project.

📜 Component Glossary and Maintenance Tips

Understanding your components is key to preventative maintenance. Here are a few essential part definitions:

• Slewing Ring: A large-diameter rolling-element bearing that supports and rotates the upper structure (cab and boom) on excavators. Example: Komatsu PC300LC-7 Slewing Bearing 207-25-61100 (小松 PC300LC-7 回转支承, Поворотный круг Komatsu PC300LC-7).
• Hydraulic Pump: Generates the fluid flow and pressure to power the hydraulic cylinders and motors. It is usually mounted to the engine. Example: Caterpillar 345D Hydraulic Pump (卡特彼勒 345D 液压泵, Гидравлический насос Caterpillar 345D).
• Track Chain: The assembly of links and pins that forms the continuous loop on which the track shoes are bolted. It is mounted on the undercarriage. Example: Hitachi ZX210 Track Chain (日立 ZX210 履带链, Цепь гусеничная Hitachi ZX210).
• Turbocharger: A forced induction device that increases an engine's efficiency and power by forcing extra air into the combustion chamber. It is mounted on the engine exhaust manifold. Example: Doosan DX300LCA Turbocharger (斗山 DX300LCA 涡轮增压器, Турбокомпрессор Doosan DX300LCA).
• Control Valve: Directs hydraulic fluid flow to various actuators (cylinders, motors). It is located in the main hydraulic system block. Example: JCB JS130 Control Valve (杰西博 JS130 控制阀, Распределитель JCB JS130).
• Brake Drum: A component in a heavy truck's wheel assembly against which brake shoes press to slow the vehicle. It is mounted inside the wheel. Example: Volvo VNL Brake Drum (沃尔沃 VNL 制动鼓, Тормозной барабан Volvo VNL).
• Piston Ring: Rings inserted into grooves on a piston to seal the combustion chamber. They are located on the piston inside the engine block. Example: John Deere 8320R Piston Ring (约翰迪尔 8320R 活塞环, Поршневое кольцо John Deere 8320R).
• Fuel Injector: Delivers a precise amount of fuel into the engine's combustion chamber. It is mounted on the engine cylinder head. Example: Mercedes-Benz Actros Fuel Injector (梅赛德斯-奔驰 Actros 喷油器, Топливная форсунка Mercedes-Benz Actros).
• Travel Motor: A hydraulic motor that drives the tracks or wheels of the excavator. It is located in the final drive of the undercarriage. Example: Kobelco SK210LC-6 Travel Motor (神钢 SK210LC-6 行走马达, Гидромотор хода Kobelco SK210LC-6).
• Tensioner Pulley: A component used to maintain the correct tension on an engine belt (e.g., serpentine belt). It is mounted on the engine block or accessory drive. Example: Honda Civic Tensioner Pulley (本田思域 张紧轮, Натяжной ролик Honda Civic).

Troubleshooting: Excavator Slew Ring Failure

A common issue with excavators is a grinding noise or excessive play in the swing function. For example, on a Caterpillar 330D, if you hear a loud grinding or popping noise when rotating the upper structure, it often indicates a failing **slewing bearing** or damaged **slew gear** teeth.

Diagnosis & Solution: Immediately stop operating the swing function. Inspect the bearing's grease purge ports for metal shavings, which confirm internal damage. The solution is replacement of the entire **slewing ring bearing** with a high-quality part like the 227-6090. Proper periodic greasing is critical preventative maintenance to avoid this failure.