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RITO Hydraulic Pump 531-9886 5319886 320GC Main Pump Assembly 320 323 323GC Excavator Piston Hydraulic Pumps

Suffering from dropped boom speeds, weak bucket breakout force, or engine stalling? The 531-9886 piston hydraulic main pump restores original factory flow and system pressure. Optimized for 320, 323, 320GC, and 323GC heavy-duty machinery.

  • Item NO.:

    531-9886
  • Order(MOQ):

    1
  • Payment:

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

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Do not allow inefficient hydraulic output to throttle your project deadlines. Implementing this high-precision 5319886 main pump assembly delivers smooth multi-functioning control, minimal fuel waste, and long-term operating reliability for global fleets.

531-9886 Hydraulic Pump

 
Product Specifications

Part Number  531-9886 / 5319886
Part Name Excavator Piston Hydraulic Main Pump
Compatible Brand CAT
Applicable Models 320, 323, 320GC, and 323GC
Application Excavator hydraulic system
Material Premium Cast Aluminum and Alloy Steel
Product Color Metallic Silver
Working Temperature -30°C to 120°C
Key Function Converts engine power into high-pressure hydraulic fluid flow
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Precision Swashplate Control

Optimizes oil flow instantly according to working loads to save fuel.

Leak-Free

High Pressure Tolerances

Maintains consistent 350+ bar system pressures for maximum digging and lifting force.

Direct Fitment

Friction-Reduced Pistons

Utilizes advanced coatings on internal pistons to minimize heat and internal wear.

Rigorous Testing

Global Supply Tiering

We offer Original, OEM, and high-performance Aftermarket options to provide flexible procurement strategies for diverse regional markets.

 

Excavator Hydraulic Part

FAQ


Q: What specific excavator failure symptoms does the RITO 531-9886 resolve?
A: It fixes slow hydraulic response, extreme boom drop under heavy load, high oil temperature alerts, and engine stalling during excavation.
 
Q: What are the critical technical installation requirements for this bearing assembly?
A: Technicians must change all hydraulic filters, flush old oil completely, and pre-fill the pump case with fresh fluid before startup.
 
Q: How can procurement managers confirm compatibility with their current fleet?
A: Ensure your machine matches model 320, 323, 320GC, or 323GC, and check that the pump tag says 531-9886.
 
Q: How does this roller bearing assembly perform under extreme mining environments?
A: Built with highly durable internal components, it sustains smooth piston strokes and precise flow regulation under intense heat and heavy continuous vibrations.
 

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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Leave A Message
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.

Leave A Message

Leave A Message
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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