Belparts excavator spare PC150-5 21K-27-00012 travel motor assy for komatsu

The excavator travel assembly is the core component for machine movement, consisting of a hydraulic motor, reduction gearbox, sprocket, track chain, idler wheel, carrier roller, and track roller. Its key function is to convert hydraulic energy into mechanical power, enabling stable mobility across challenging terrains.

Production Description

1. Hydraulic Power Transmission

   • The hydraulic pump transforms engine power into high-pressure oil, which is transmitted to the travel motor via hydraulic lines.

   • The travel motor converts hydraulic energy into rotational kinetic energy, generating high-speed, low-torque output.

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2. Speed Reduction & Torque Amplification

   • The gearbox reduces motor speed through gear sets while significantly increasing torque, ensuring sufficient traction force for the sprocket.

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3. Track Drive Mechanism

   • The sprocket engages with track links to drive the track chain. Carrier rollers and track rollers form a closed-loop track system, while the idler wheel adjusts track tension.

   • Differential control of dual travel motors enables forward/reverse movement, steering, and zero-radius rotation.

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Factory

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.

3. How can I pay the order?
We can receive payment through T/T, Western Union, Paypal(for small amount), trade assurance.

4. When will get the items after I place order?
Once your payment is confirmed, we will arrange the goods within 24 hours; if not in stock , we will inform you before placing the order.

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 ,pls provide pictures for us and we will check. After it is confirmed, pls return to us , we will offer the correct item.

6. What is your main products ?
We are specialized in the excavator spare parts, such as travel motor gearbox/ass’y/parts, swing gearbox/ass’y/motor/parts, hydraulic pump assy/parts and gear parts. If you need other excavator parts, we also can supply as your requirements.

About Us

our service

1. Sample order

2. We will reply your inquiry within 24 hours.

3. After the goods are sent, we will always track the products for you until you receive them. After receiving the goods, test and give me feedback. If you have any questions about the problem, please contact us and we will provide you with a solution.

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.