Casappa Magnum 890 Series Gear Pump | 890-EI-0160-FS2-S202 | Cast Iron High Pressure Pump

The 890 Series (Magnum) high-pressure gear pumps from Chengyuan Hydraulic are heavy-duty power units fully compatible with Casappa engineering standards. Unlike traditional aluminum pumps, the Magnum series features a robust two-piece cast iron construction designed to withstand extreme mechanical stress and high-pressure pulses. For core models such as 890-EI-0160, 0800, and 0500, we have reinforced the internal bearing support structures. Every pump undergoes 100% simulated heavy-duty load testing before delivery to ensure its volumetric efficiency at maximum pressures matches OEM performance, guaranteeing 100% original-place interchangeability.

Technical Specifications :

• Series Model: 890 Series (Magnum)

• Nominal Sizes: 0160 (16cc) / 0500 (50cc) / 0800 (80cc)

• Body Material: High-strength Ductile Cast Iron

• Rated Operating Pressure: 280 bar (28 MPa)

• Peak Operating Pressure: 310 bar (31 MPa)

• Maximum Speed: 3000 rpm (depending on displacement)

• Minimum Speed: 400 rpm

• Shaft Options: FS2 (SAE B Splined) / RS2 (Straight Keyed) / RK2 (Tapered)

• Mounting Flange: S2 (SAE B 2-bolt) / C3 (SAE C Standard)

• Seal Material: Viton/FKM as standard for high temperature and chemical resistance

Key Technical Advantages:

• Heavy-Duty Two-Piece Cast Iron Body: The 890 series eliminates the deformation common in aluminum pumps. The rigid iron housing remains stable at 300 bar, allowing for tighter end-face clearances and maintaining over 97% volumetric efficiency throughout its service life.

• Reinforced DU Bushings: Equipped with enhanced self-lubricating composite bushings, the 890 series handles higher radial loads (ideal for gear or belt drives) and provides superior heat dissipation to prevent shaft seizure under continuous high-load operations.

• Hydrodynamically Optimized Ports: For larger sizes like 0800, internal flow paths are optimized to reduce resistance and cavitation risks, ensuring quiet operation and smooth flow even at maximum speeds.

• 100% Precision Validation: Chengyuan utilizes digital test benches to conduct step-pressure and internal leakage tests on every unit. We ensure that performance data at extreme temperatures (80°C) matches original Casappa specifications.

Application Areas:

• Construction & Road Machinery: Steering systems for rollers and pilot pumps for excavators.

• Environmental Equipment: Main hydraulic systems for garbage compactors.

• Industrial Presses: Compact power units requiring long-term high-pressure output.

Expert Maintenance Tips:

• Flange Bolt Torque: Due to the iron body’s rigidity, use Grade 12.9 bolts and follow a cross-tightening sequence to ensure even pressure on port seals and prevent leakage.

• Pre-Startup Priming: Always fill the pump with clean hydraulic oil via the inlet port before the first start. Never “jog” the motor without fluid in the pump.

• Fluid Quality: Use anti-wear (AW) hydraulic oils and maintain system cleanliness according to ISO 4406 18/16/13 standards for optimal component life.