BETTER PARTS Machinery Co., Ltd.
                                                                                                           
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16 Years
Since 2010
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High Pressure Long Life Corrosion Resistant Hydraulic Piston Pump for Excavator Main Pump Applications

Price Negotiable
Price: NIGOTIATION
MOQ: 1
Delivery Time: 7 days
Brand: CAT
Product Description
MAIN HYDRAULIC PUMP GP-2PS- CAT 320 320 GC NEW Excavator Main Pump Hydraulic Pump 5319885 531-9885
Original equipment manufacturer hydraulic main pump part numbers 5319885 and 531-9885, designed for optimal performance in demanding excavator applications.
CAT 336F Hydraulic Excavator in operation showcasing hydraulic system components
Product Overview
Advanced Hydraulic Control System

This hydraulic pump features a centrally located turbine with electrically controlled lifter for precise speed regulation. Adjusting the lifter inward reduces pump speed, while outward adjustment increases operational speed.

Integrated Pump Configuration
  • Right Side Series Pumps: Front plunger-type pilot pump and rear hydraulic oil fan cooling pump. The high-flow pilot pump primarily supplies oil to the slewing system.
  • Left Side Series Pumps: Front rotary pump and rear coolant fan cooling pump. The rotary pump supplies oil to two variable displacement rotary motors in the closed hydraulic system.
Performance Specifications

Maximum flow rate of 1064 liters/minute delivers substantial power for demanding excavator operations, supporting large-scale mining and heavy engineering applications.

Technical Specifications
Product Name Excavator Main Pump
Model 320GC
Color Black, Yellow
Place of Origin China/US/Japan
Weight 150KG
Part Number 5319885, 531-9885
Minimum Order Quantity 1 set
Packing Method Wooden case
Delivery Time 1-3 days (dependent on order quantity)
Payment Terms L/C, T/T, Western Union, Trade Assurance
Quality Assurance: Each cylinder head undergoes thorough inspection with detailed photographs provided to buyers for confirmation prior to shipment.
Hydraulic pump component detail view
Manufacturer Profile

Better Parts Company specializes in research, development, production, and sales of hydraulic products with over 8 years of experience serving international markets.

Product Range

Comprehensive selection of hydraulic pumps, motors, valves, gear boxes, gear pumps, and spare parts compatible with leading brands including Rexroth, Parker, Eaton-Vickers, Linde, and Sauer-Danfoss.

Company Commitment: "High Quality, Best Service, Competitive Price" ensuring reliable performance and complete customer satisfaction across all product lines.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company BETTER PARTS Machinery Co., Ltd.
Location Room 301-2295, Building 6, Kelin Road, Tianhe District, Guangzhou
Contact Person Bonnie

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