Excavator Volvo EC140 EC140B Travel Reduction 14573820 SA 8230-33470 Gearbox

The excavator travel gearbox is a critical component in crawler excavators, responsible for transferring power from the engine to the tracks, enabling controlled movement. Designed to withstand heavy loads and harsh environments, it ensures efficient mobility across diverse terrains. This guide explores its working principles, construction, functions, applications, and maintenance practices.

Product Description

Functions

1. Torque Conversion: Converts hydraulic/mechanical input into high-torque output for track movement.

2. Speed Control: Adjusts track speed via gear ratios.

3. Directional Mobility: Facilitates forward/reverse operation.

4. Load Distribution: Distributes weight evenly across tracks to prevent slippage.

5. Shock Absorption: Dampens impacts from uneven terrain.

List of spare parts

• Function: Protects internal components and retains lubrication.

3.2. Gears

• Planetary Gear Sets: Compact design for high torque transmission.

• Spur Gears: Simpler models use spur gears for cost efficiency.

3.3. Bearings

• Tapered Roller Bearings: Handle axial and radial loads.

• Needle Bearings: Used in high-speed sections.

3.4. Shafts

• Input Shaft: Connects to the hydraulic motor.

• Output Shaft: Drives the sprocket.

3.5. Seals & Lubrication

• Lip Seals/Gaskets: Prevent oil leaks and contamination.

• Oil Bath/Grease Lubrication: Reduces friction and wear.

3.6. Brakes & Clutches

• Wet Disc Brakes: Hydraulically activated for smooth stopping.

• Directional Clutches: Enable gear shifting (in mechanical models).

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FAQ

GZ Yuexiang Engineering Machinery Co., Ltd.

GZ Yuexiang Engineering Machinery Co., Ltd, is a foreign trade company integrating development, sales, procurement, warehousing, transportation and service. Founded in September 2013, we have more than twelve years of experience in machinery trade.

Our main products are Excavator Hydraulic Spare Parts, Hydraulic Main Pump, Swing Motor, Travel Motor, Final Drive Ass'y, Swing Device Ass'y, Swing Gearbox, Travel Gearbox, Gears, Regulators, Relief Valve, Fan Motor and other hydraulic items with genuine and aftermarket quality. Until now, our products have been exported to more than 198 countries and regions, spreading all over the Middle East, Southeast Asia, Africa, North America, South America, Europe and Oceania with our own brand "Belparts", which is highly praised by foreign customers and enjoys a high reputation.

In the future, to practice our company culture “DO BETTER FOR TOMORROW ”, we will strive to learn more professional knowledge about machinery parts and increase our procurement and sales experience to provide customers with better products and services! What’s more, we will devote to develop a more broad business space together base on long-term, friendly, mutually beneficial and win-win business relations.