Hyundai R250LC-7 31N8-40071BG travel reduction gearbox for excavator parts

Hyundai R250LC-7 31N8-40071BG travel reduction gearbox for excavator parts

The excavator travel gearbox (also known as the walking gearbox or track drive 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

List of spare parts

The travel gearbox operates as a speed reducer and torque amplifier:

1. Power Input: Receives high-speed, low-torque rotational energy from the hydraulic motor (or engine via a driveshaft in mechanical systems).

2. Gear Reduction: Multi-stage gears (planetary/spur) reduce speed while increasing torque.

3. Output to Sprocket: The final drive transfers torque to the sprocket, which engages with the track links, propelling the excavator.

4. Direction Control: Integrated clutches or hydraulic valves enable forward/reverse movement.

Hydraulic excavators commonly use hydraulic travel motors coupled with gearboxes, while older models may employ mechanical transmissions.

FAQ

1 . If I only know the excavator model, but can not offer parts No., what should I do ?
If possible, you can send us pictures of old products, nameplate or the size for reference.

2 . What is the warranty of the parts after I purchased?
The warranty is 6/12 Months based on the item details.The genuine parts we don't have the warranty of it,but just can make sure it is 100% genuine.

3 . How can I pay the order?
You can finish the payment by T/T,Western Union,Paypal etc.

4 . When will get the items after I place order?
Once we received your payment , we will arrange the shipment within 24 hours ; if don't have stock , we will tell you before payment . 

5 . How can I do if there is something wrong with the items?
First of all , I have confidence in the quality of our products ,if you really found something wrong ,please provide pictures for us and we will check. After it is confirmed, please return to us , we will offer the correct item.

6 . What is your main products ?
Our pain product is final drive , hydraulic pump , swing gearbox , travel gearbox , swing motor , hydraulic parts . If you need any parts for crawler excavator , you can ask us too . We will try our best to meet your requirement.