Hydraulic performance loss on large mining excavators usually starts with inconsistent flow output, then develops into weak breakout force and unstable multi-function operation under load. The 4289281 variable displacement pump assembly is designed to restore controlled hydraulic behavior, keeping pressure output steady and supporting reliable power delivery in harsh working environments.
Item NO.:
9136529Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time：
2-3 DAYS
| Part Number |
|
|---|---|
| Part Name | Hydraulic Pump |
| Compatible Brand | Hitachi |
| Applicable Models | EX550, ZX600, ZX650 |
| Application | Excavator |
| Material | High-Strength Alloy Steel |
| Product Color | Industrial Gray |
| Working Temperature | -30°C to +105°C |
| Key Function | Provides regulated hydraulic power for excavator working systems |
| Condition | 100% New, Aftermarket / OEM Quality |
| Packaging | Wooden Case/Reinforced Carton/Neutral Packing / Customized Box |
Hydraulic output adjusts according to load changes to maintain stable working efficiency.
Supports balanced pressure delivery across multiple hydraulic functions without fluctuation.
Built for continuous mining and large-scale earthmoving conditions with sustained reliability.
FAQ
A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies
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