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RITO Axial Piston Pump 9149125 EX300-5 HPV145 Tandem Pump Assembly 9166355 9169055 ZX330-5 Main Hydraulic Pump Assembly

EX300-5 and ZX330-5 excavators operating in long-duration mining and heavy construction cycles often show reduced hydraulic efficiency, especially during repeated load switching and multi-action work. RITO 9149125 HPV145 Axial Piston Tandem Pump Assembly is applied to restore stable hydraulic performance across these machine platforms.

  • Item NO.:

    9166355 (9169055) 91
  • Order(MOQ):

    1
  • Payment:

    T/T, WESTERN UNION, CHINESE BANK,PAYPAL
  • Product Origin:

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

9166355 Hydraulic Pump

 
Product Specifications

Part Number 
9166355
Part Name Hydraulic Pump
Compatible Brand Hitachi
Applicable Models EX300-5, ZX330-5
Application Excavator
Material Forged Alloy Steel Housing
Product Color Industrial Grey
Working Temperature -25°C to 95°C
Key Function Restores excavator hydraulic system pressure stability
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Tandem Flow Balance Restoration

Maintains synchronized hydraulic output across dual pump sections.

Leak-Free

HPV145 High-Load Piston System

Designed for stable performance in medium-to-large excavators.

Direct Fitment

Improved Multi-Function Operation Stability

Reduces delay during combined digging, lifting, and swing actions.

Rigorous Testing

Suitable for EX300-5 / ZX330-5 Systems

Used in hydraulic system replacement and fleet maintenance work.

Excavator Hydraulic Part

FAQ


QWhat indicates hydraulic degradation in EX300-5 machines?
A: Slow cycle speed, weak digging force, unstable pressure, and delayed response.
 
QWhat should be checked before installation?
A: Hydraulic oil cleanliness, suction line sealing, shaft alignment, and air removal.
 
Q: What environments is it designed for?
A: Continuous mining, quarry, and heavy construction operations.
 
Q: Why is tandem balance important in hydraulic systems?
A: Because uneven output between pump stages reduces overall machine stability and efficiency.
 
Q: What quality options are available?

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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If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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