Hydraulic Pump & Motor Parts Supplier in China
Hydraulic pump assemblies, swing motor assemblies, travel motor assemblies, pump & motor spare parts, and hydraulic gear pumps for excavators, construction machinery and other hydraulic equipment.
Across major OEM reference platforms, the right supply option depends on application, hydraulic configuration, operating conditions and repair strategy. We support reliable replacement products, selected genuine OEM options, complete assemblies and repair parts for different operating and maintenance requirements.
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Products
Choose a product category, then narrow your requirement by machine application, model or OEM reference.
Hydraulic Pump Assembly
Complete hydraulic pump assemblies for excavators, construction machinery and other hydraulic equipment.
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32 brandsBy OEM Reference Brand
27 brands
Swing Motor Assembly
Complete swing motor assemblies for excavators, construction machinery and other hydraulic equipment.
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32 brandsBy OEM Reference Brand
27 brands
Travel Motor Assembly
Complete travel motor assemblies for excavators, construction machinery and other hydraulic equipment.
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32 brandsBy OEM Reference Brand
27 brands
Pump & Motor Spare Parts
Internal repair parts for hydraulic pumps and motors, supplied individually or as matched sets.
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32 brandsBy OEM Reference Brand
27 brands
Hydraulic Gear Pump
Hydraulic gear pumps for excavators, construction machinery and other hydraulic equipment.
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32 brandsBy OEM Reference Brand
27 brands
Hydraulic Pump & Motor Parts
Matching Challenges
Hydraulic pumps, motors and related parts may look similar but differ in configuration, interfaces and specifications. Accurate matching usually requires more than the machine model alone.
Same Machine, Different Configurations
The same machine model may use different pump or motor configurations depending on serial number, production version, market or hydraulic platform.
Incomplete or Unclear Identification
On older equipment, nameplates may be missing, original part-number records can be difficult to trace, and replacement references may have been updated or superseded over time.
Internal Parts Are Not Always Interchangeable
Even within the same pump, motor or hydraulic gear pump model, internal parts may differ because of control configuration, production version or application. When the reference is unclear, dimensions and detailed photos may be required to verify interchangeability before supply.
Cross-Reference Part Numbers
We check part numbers against our accumulated reference data and manufacturer information to identify updated, superseded or equivalent references before quoting.
Compare Product Details When References Conflict
When references are incomplete or inconsistent, we compare product details using photos, drawings or dimensions, focusing on the differences that affect interchangeability.
Confirm What Will Actually Be Supplied
Before the order is finalized, we clarify the matched reference, supply scope and any points that still require confirmation, so the buyer knows exactly what is being supplied.
Need Us to Cross-Check a Hydraulic Reference?
Send Part DetailsSupply Options for
Different Buying Needs
Choose the supply route that fits your application, budget, repair plan and delivery requirement. Availability is confirmed by model before order.
Replacement Supply
A cost-effective choice for buyers balancing budget, reliability and operating requirements. Suitable for general construction, fleet maintenance and applications where reliability and cost control are both important.
Genuine OEM Supply
Preferred when original specification and lower application risk take priority — especially in mining, quarrying, high-temperature or other severe-duty applications where downtime is more costly.
Complete Assembly or Repair Parts
Choose between a complete assembly and repair parts based on unit condition, repair capability, downtime and total repair cost. A complete assembly is often preferred when fast replacement is the priority, while internal parts can be more economical when the main unit remains repairable.
Stock or Order-Based Supply
Supply can be arranged from available stock or against order depending on the reference, configuration and quantity required. Urgent maintenance usually prioritizes available stock, while special configurations, less common models or planned bulk purchases can be coordinated with an agreed lead time.
Hydraulic pump & motor —
frequently asked questions
Why are some hydraulic pump parts recommended to be replaced as matched sets?
Certain internal parts work together as matched surfaces or groups. Replacing only one heavily worn component may affect sealing, efficiency and repair life.
What information is needed to replace a hydraulic gear pump?
The key details usually include displacement, rotation direction, shaft type, mounting flange, port configuration and working pressure. Housing material and single- or multi-section design may also need to be confirmed.
What should be checked before installing a replacement hydraulic pump or motor?
Check hydraulic oil cleanliness, filter condition, system contamination, pressure settings and any unresolved damage from the previous failure. Metal debris or other system faults can quickly damage a new unit.
Can you supply individual internal parts instead of a complete repair kit?
Yes, individual internal parts can be supplied for many pump and motor models when the exact component is identified. Some wear-related parts may be better replaced together because their working surfaces and clearances affect each other.
What is the difference between a hydraulic piston pump and a hydraulic gear pump?
A piston pump uses reciprocating pistons to move hydraulic oil and is commonly used for higher-pressure or variable-displacement systems. A gear pump uses rotating gears to move oil and is generally simpler, fixed-displacement and more cost-effective.
Why can a new hydraulic pump or motor fail shortly after replacement?
Early failure can be caused by contaminated oil, metal debris, incorrect pressure settings, blocked filtration, installation errors or unresolved faults elsewhere in the hydraulic system.