Doosan DX490 DX500 DX520 DX530 Travel Motor Assembly | Final Drive Unit 49-53T
Product Details
| Means Of Transpor: | By Sea, By Air Or By Express | Payment: | Western Union, T/T |
|---|---|---|---|
| Durability: | High Wear Resistance | Certifiion: | OEM |
| Machinery Test Report: | Provided | Condiction: | New Aftermarket One |
| Applicable Industries: | Machinery Repair Shops, Energy & Mining | Spocket: | 20Holes |
| Appliion: | Excavator | Inner Packing: | Wrap With Shrink Film |
| Brake Type: | Spring-applied, Hydraulically-released | Used For: | DX490 DX500 DX520 DX530 |
| Highlight |
Doosan excavator travel motor assembly,DX500 final drive unit,49-53T excavator travel gearbox |
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Product Description
🌟 Product Features
- Complete ready-to-install assembly: Includes travel motor, planetary gearbox, brake valve, flushing valve, and output hub — no need to source parts separately.
- Case-hardened alloy gears: Gears carburized and hardened to HRC 58-62 with precision grinding, delivering high torque capacity and resistance to pitting.
- Multi-stage planetary reduction: 3-stage planetary gear train distributes load evenly across multiple planet gears, maximizing torque output and gear life.
- Wet multi-disc parking brake: Spring-applied, hydraulic-released brake holds the machine securely on slopes and prevents creep during shutdown.
- Imported seal system: NOKKKKK/Nachi shaft seals and O-rings ensure zero external leakage of gear oil and hydraulic fluid.
- Heavy-duty tapered roller bearings: High-capacity bearings absorb combined radial and axial loads from machine weight and track tension.
- Dual-speed travel valve: Built-in shift valve enables low-speed high-torque digging travel and high-speed site transit without external modifications.
- Anti-cavitation & flushing design: Continuous case flushing removes heat and wear particles, extending motor and bearing life.
- Left/right specific: Dedicated LH and RH versions match original mounting orientation and port layout.
Product Working Principle
Hydraulic oil from the excavator’s main pump flows through the control valve to the travel motor. The motor converts hydraulic pressure into rotary mechanical energy. This rotary output drives the planetary reduction gearbox, which reduces speed and multiplies torque. The gearbox output shaft drives the track sprocket, moving the excavator forward or backward. When the operator selects two-speed travel, the motor’s displacement changes to provide either high torque or high speed. When travel is stopped, the spring-applied multi-disc brake automatically engages to hold the machine. A brake release port allows hydraulic pressure to compress the spring and release the brake during travel.
Product Usage
Special travel drive replacement for Doosan 49-53 ton large excavators. Widely used in open-pit mining, quarrying, heavy earthwork, road construction and large infrastructure projects. Ideal for mining fleets, repair workshops and machinery parts dealers.
Product Advantages
- Perfect OEM Fit: 1:1 original size, no modification, zero installation error
- High Torque Output: Planetary reduction, strong power for heavy load climbing
- Long Service Life: Hardened gears + reinforced housing, 2-3x life of ordinary parts
- Zero Leakage: Imported seals, solves oil leakage in muddy mining sites
- Low Failure Rate: Stable structure, reduces undercarriage downtime
- Cost-Effective: Factory direct supply, competitive price for bulk procurement
FAQ – DX490 DX500 DX520 DX530 Travel Assembly
Q1: How do I confirm this travel assembly fits my Doosan excavator?
This assembly is manufactured for Doosan DX490, DX500, DX520, and DX530 models. Please verify your machine’s serial number and compare the mounting flange, shaft spline, and port positions with the specifications above. Send us photos of your old travel assembly’s data plate if unsure, and our team will confirm compatibility before you order.
Q2: What is the expected service life?
Under normal operating conditions with clean hydraulic oil and proper maintenance, the travel assembly should deliver long service before overhaul. Heavy mining cycles, contaminated oil, or excessive track tension can shorten this interval.
Q3: Can I install this travel assembly myself?
Installation requires moderate mechanical and hydraulic skills. Drain the travel circuit, disconnect hoses, remove mounting bolts, and carefully lower the old assembly. Install the new unit with new O-rings, torque bolts to specification, refill with clean hydraulic oil, and bleed the system before operation. Video call support is available 24/7.
Q4: Do you provide seal kits and bearings for this travel assembly?
Yes, complete seal kits, bearings, shafts, and brake parts matched to this assembly are in stock. We recommend replacing seals and bearings whenever the travel assembly is disassembled for repair.
Q5: What causes travel assembly failure?
Common causes include contaminated hydraulic oil, cavitation, operating above rated pressure, worn brake discs, and lack of maintenance. Always maintain oil cleanliness, check track tension, and replace filters on schedule.
Q6: Is this a genuine Doosan part?
This is a high-quality aftermarket replacement manufactured to OEM specifications, not a genuine Doosan component. It is designed and tested to match or exceed OEM performance at a lower price. Many repair shops and fleet owners choose our assembly for reliability and cost savings.
Q7: Can you customize gear ratio or brake settings?
Yes, we offer custom configurations. If your DX490–DX530 requires a specific gear ratio, brake release pressure, or two-speed setting, contact our engineering team with your requirements. We can tailor the assembly to your application.
Product Highlights
Complete Doosan DX490-DX530 travel motor assembly with hardened gears, multi-disc brake, and imported seals. OEM fit, high torque output, and zero leakage for mining and heavy construction applications.
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