Final Drive Travel Gearbox Fit for Excavator Caterpillar E303
Final Drive Travel Gearbox Fit for Excavator Caterpillar E303

Introduction
A travel gearbox, also known as a final drive, is an important component of an excavator. It is responsible for transferring power from the engine to the tracks and wheels, allowing the excavator to move. The travel gearbox plays a crucial role in the excavator's performance, as it controls the speed, torque, and direction of travel.
Installation and Function
The travel gearbox is typically installed in the rear of the excavator, between the engine and the tracks. It connects to the hydraulic system, which provides the necessary pressure to operate the gearbox. The gearbox works by using a system of gears and bearings to transfer power from the engine to the tracks. The gears are designed to reduce the output speed of the engine and increase the torque, which allows the excavator to move heavy loads and work in tough terrain.
Core Features and Advantages
- High-quality materials and manufacturing process ensure durability and reliability.
- Precision engineering ensures optimal performance and efficiency.
- Custom-designed for Caterpillar E303 excavators, ensuring a perfect fit and maximum performance.
- Advanced sealing technology prevents leaks and contamination, prolonging the life of the gearbox.
- Easy maintenance and serviceability, with convenient access to all components.
Performance Parameters

Our travel gearbox is specifically designed to meet the performance needs of the Caterpillar E303 excavator. It has been engineered for optimal torque output, speed matching, and load-bearing capacity, ensuring unparalleled performance and productivity on the job site.
Parameters for Purchasing
| Parameter | Description |
|---|---|
| Model Number | The model number of the excavator for which the gearbox is intended. |
| Speed Ratio | The ratio of input speed to output speed. |
| Rated Load Capacity | The maximum load that the gearbox can handle under normal operating conditions. |
| Output Torque | The maximum torque that the gearbox can output. |
When to Replace the Travel Gearbox
- Frequent leaks or damage to the gearbox housing.
- Unusual noises or vibrations coming from the gearbox.
- Difficulty in shifting gears or changing direction.
- A significant drop in performance or productivity.
- Visible wear or damage to the gears or bearings.
Daily Maintenance
- Check oil levels and quality regularly to prevent contamination or low levels.
- Inspect gears and bearings for visible wear or damage.
- Check hydraulic lines and connections for leaks or damage.
- Clean the exterior of the gearbox to prevent debris or dirt from entering the system.
- Perform regular maintenance and service according to the manufacturer's recommendations.
Installation Guide
Our travel gearbox is designed for easy installation and compatibility with the Caterpillar E303 excavator. Follow these steps for a successful installation:
- Remove the old gearbox and clean the mounting surface.
- Inspect the hydraulic lines and connections for leaks or damage.
- Install the new gearbox, making sure to align it properly and secure all mounting bolts.
- Connect the hydraulic lines and test the system for leaks or other issues.
- Perform a test run to ensure proper function and performance.
Other Compatible Brands and Models
We specialize in producing high-quality spare parts for a wide range of excavator and bulldozer models, including but not limited to:
- Daewoo
- Doosan
- Caterpillar
- Hitachi
- Kato
- Komatsu
- Hyundai
- SANY
- Volvo
- Kobelco
- Sumitomo
- LiuGong
- Yuchai
- CASE
- LOVOL
- Sunward
- XCMG
At our company, we pride ourselves on our commitment to quality and our dedication to serving our customers' needs. With a focus on precision engineering, advanced manufacturing techniques, and exceptional customer service, we are the go-to source for high-quality excavator and bulldozer parts. With over 12000 different parts available, we offer a comprehensive selection of spare parts to fit more than 503 models of excavators and bulldozers.
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





