JCB Hydraulic Main Pump | 20/925580 332/F9030 20/912800 | 7029120048 Iron Pump

LIC Hydraulic’s JCB Series high-pressure iron single pumps are precision-engineered replacements for JCB 3CX and 4CX backhoe loaders and telescopic handlers. This series includes critical OEM part numbers 20/925580, 332/F9030, 20/912800, 20/903100, and manufacturer codes 7029120048, 7029122001. Built with a heavy-duty cast iron body, these pumps are designed to withstand the extreme mechanical stress of construction sites. We guarantee 100% Drop-in Interchangeability with the original Key Shaft specifications. Every unit undergoes 100% full-load performance testing to ensure zero-defect reliability and high-speed hydraulic response for digging and loading cycles.

Technical Specifications (Bulleted List)

• OEM Part Numbers: 20/925580, 332/F9030, 20/912800, 20/902900

• Manufacturer Codes: 7029120048, 7029122001 (7029 Series)

• Compatible Machines: JCB 3CX, 4CX, JCB201, JCB202

• Housing Material: High-tensile Cast Iron

• Drive Shaft: Standard Key Shaft

• Rated Pressure: 250 bar (3625 PSI)

• Peak Pressure: 280 bar (4060 PSI)

• Installation: SAE 2-bolt or 4-bolt standard mounting

• Efficiency: >93% volumetric efficiency at rated pressure

Key Technical Advantages

• Heavy-Duty Iron Construction: The cast iron housing provides superior fatigue resistance and lower thermal expansion compared to aluminum pumps, maintaining performance under continuous high-load operations.

• Precision-Machined Key Shaft: The drive shaft is forged from high-alloy steel and induction-hardened. Micron-level accuracy in the keyway prevents shaft shearing caused by transmission play.

• DU Bearing System: Equipped with high-capacity DU composite bearings designed to absorb radial loads and hydraulic pulsations, significantly extending service life in demanding environments.

• Advanced Sealing Integrity: Utilizing premium high-pressure seals and skeleton oil seals to ensure leak-free operation at continuous 250 bar output.

Application Areas

• JCB Backhoe Loaders: Primary hydraulic source for 3CX and 4CX models.

• JCB Telehandlers: Suitable for material handling machines such as 531-70 and 541-70.

• Hydraulic Retrofitting: High-reliability power source for industrial power packs requiring heavy-duty iron gear pumps.

Expert Maintenance Tips

• Alignment Precision: When installing the key shaft pump, verify the alignment of the coupling. Any eccentricity will cause premature keyway wear or front bearing failure.

• Filter Replacement: It is mandatory to replace both the suction and return filters when installing a new pump. Residual debris in the JCB hydraulic circuit is the leading cause of premature pump failure.

• System Bleeding: Loosen the outlet fitting to bleed air before the initial start-up. Run the engine at low idle for 10 minutes to ensure all air is purged from the circuit, preventing cavitation.

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