JCB Gear Pump 20/925647 332/E6671 | 7049520006 7029522013 | Replacement for JCB 217 218 Backhoe Loaders

Chengyuan Hydraulic presents the JCB series high-performance hydraulic gear pumps, specifically engineered as premium power cores for JCB 217, 218, and 3CX/4CX backhoe loaders. This range includes critical OEM models such as 20/925647, 332/E6671, 7049520006, and 7029522013. Recognizing the rigorous demands of earthmoving operations, Chengyuan ensures 100% Drop-in Interchangeability with original parts. Every unit undergoes our signature 100% Simulation Load Testing, simulating extreme pressure and temperature before shipment. This guarantees a seamless replacement that restores your machine’s hydraulic power without any mechanical modifications.

Technical Specifications 

• Applicable Machinery: JCB 217, 218, 3CX, 4CX Backhoe Loaders

• OEM Part Numbers: 20/925647, 332/E6671, 7049520006, 7029522013

• Pump Type: Tandem/Triple Gear Pump (based on specific OEM code)

• Displacement (Main/Aux): 36cc / 26cc (standard for 20/925647)

• Rated Operating Pressure: 250 Bar (25 MPa)

• Peak Pressure: 280 Bar (28 MPa)

• Rated Speed: 2200 r/min

• Max. Speed: 3000 r/min

• Shaft Type: 13 Teeth Spline Shaft

• Housing Material: High-strength anti-wear die-cast Aluminum Alloy / Ductile Iron

Key Technical Advantages:

• High-Precision Gear Engineering: Gears are crafted from high-load alloy steel with precision grinding and nitriding. The micron-level tooth profile accuracy minimizes flow pulsation, significantly enhancing the smoothness of hydraulic actuators.

• Pressure-Compensated Floating Bushings: The internal floating side plates automatically adjust axial clearances based on system pressure. This technology maintains over 90% volumetric efficiency even under continuous 250 Bar operations.

• Heavy-Duty Shock Resistance: Engineered specifically for the aggressive impact of JCB digging cycles, the pump features reinforced heavy-duty bearings. This prevents internal “scuffing” and housing fractures during instantaneous overload.

• Advanced Sealing System: Utilizing a combination of high-grade NBR and FKM seals, our pumps withstand temperatures exceeding 100°C. This eliminates internal leakage and shaft seal seepage often caused by seal aging in high-heat environments.

Application Areas:

• Backhoe Loaders: The primary hydraulic source for JCB 3CX/4CX series, powering boom, bucket, and dipper functions.

• Telehandlers: Powering auxiliary hydraulic circuits.

• Agri & Construction Equipment: Various specialized machinery utilizing JCB power platforms.

Expert Maintenance Tips:

• Hydraulic Fluid Cleanliness: JCB systems are highly sensitive to contaminants. Always use hydraulic oil meeting ISO 4406 18/16/13 standards.

• Inlet Filter Inspection: Before installing a new pump, replace the suction filter and clean the hydraulic tank. Suction restriction (cavitation) is the leading cause of high-frequency whining and premature pump failure.

• Air Bleeding Protocol: After installation, bleed air from the outlet fitting or “jog” the engine/motor at no load until oil flow stabilizes before proceeding to full-load operation.