Swing Gearbox Fit for Excavator Kobelco SK135
Swing Gearbox Fit for Excavator Kobelco SK135

Introduction to Swing Gearbox
A swing gearbox, also known as a swing drive, is an essential component in the excavator's hydraulic system. It is responsible for controlling the excavator's rotation and providing the necessary torque to execute the digging, lifting, and loading operations. The following are the main functions of a swing gearbox:
- Control the excavator's rotating speed and direction.
- Provide the necessary torque to execute the digging, lifting, and loading operations.
- Ensure smooth and accurate control of the excavator's movements.
Installation and functions in Excavator Kobelco SK135

The swing gearbox is usually installed on the excavator's upper structure, underneath the cab. It is responsible for controlling the excavator's rotation and provides the necessary torque for the digging, lifting, and loading operations. The swing gearbox works by taking power from the hydraulic pump and sending it to the swing motor. The motor then powers the swing gearbox, which is responsible for controlling the excavator's rotation.
Compatibility and Parameter Table
Our swing gearbox is designed to perfectly fit the excavator brand and model, Excavator Kobelco SK135. Please refer to the following table before purchasing:
| Parameter | Description |
|---|---|
| Brand | Kobelco |
| Model | SK135 |
| Weight | 150kg |
| Maximum Output Torque | 50,000 Nm |
Signs of Replacing a New Swing Gearbox
The following signs indicate that a swing gearbox needs to be replaced:
- Unusual noises coming from the gearbox during operation.
- Difficulty in controlling the excavator's rotation.
- Inconsistent or sluggish rotation of the excavator.
- Leaking of hydraulic fluid from the gearbox.
Daily Maintenance to Extend Lifespan
The following daily maintenance tips can help extend the lifespan of a swing gearbox:
- Regularly check the gearbox's oil level and replace the oil as necessary.
- Keep the gearbox and surrounding area clean to prevent dirt and debris from entering.
- Inspect the gearbox for any signs of wear or damage and replace any damaged parts.
Compatible Brands and Models
Our swing gearbox is compatible with various excavator brands and models, including but not limited to:
- Caterpillar
- Komatsu
- Volvo
- Hitachi
We do not sell products for the above brands and models mentioned. The compatibility information is provided for customer convenience only.
About Our Company
We are a dedicated enterprise that produces high-quality spare parts for excavators, bulldozers, and other construction machinery. Our company is equipped with various production equipment, advanced processing technology, and a team of high-quality professionals in production, design, and marketing. Our main products include walking and swing reducer assemblies, gears, shafts, planetary carriers, wheels, pump casings, rotation shaft seats, end caps, washers, bearings, and oil seals. Our products cover over 12,000 kinds of spare parts and are suitable for more than 662 machine models.
Author: Miya
Product Quick Detail:
- Standard and non-standard available
- With high quality and competitive price
- Prompt delivery
- Packing as per customer’s demand.
We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.
Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port


