Shimadzu SGP1 SGP2 Series Hydraulic Gear Pump | SGP1-18 SGP2-25 | High Pressure Forklift Pump

The SGP Series external gear pumps from Chengyuan Hydraulic are high-performance power units specifically engineered for mobile machinery, offering full compatibility with Shimadzu standards. These pumps feature high-strength extruded aluminum alloy bodies that maintain structural integrity under high-frequency load impacts. For core models including SGP1-18D1H2-R, SGP2A25F1H1R593, and SGP1-25, we implement precision floating bush technology. Every pump undergoes 100% simulated full-load testing before shipment to ensure pressure output parity with the OEM, guaranteeing 100% original-place interchangeability.

Technical Specifications :

• Series Model: SGP1 / SGP2 Series

• Displacements: 18.0 $cm^3/r$ (SGP1-18) / 25.0 $cm^3/r$ (SGP2-25)

• Rated Operating Pressure: 210 bar (21 MPa)

• Peak Pressure: 245 bar (24.5 MPa)

• Speed Range: 500 – 3000 rpm (SGP1) / up to 4000 rpm (specific SGP2)

• Rotation: R (Clockwise) / L (Counter-clockwise)

• Shaft Configurations: 13-tooth spline or keyed (specific to model suffix)

• Mounting Flange: SAE or Shimadzu-specific 2-bolt/4-bolt standards

• Housing Material: High-strength fatigue-resistant aluminum alloy

Key Technical Advantages:

• Three-Piece High-Pressure Design: Utilizing a reinforced three-piece construction (front cover, body, rear cover) with alloy steel gears, the SGP series minimizes housing deformation at 21MPa, effectively curbing internal leakage.

• Automatic Floating Side Plate Compensation: This technology utilizes pressure feedback to adjust the floating bush against the gear faces. It ensures over 95% volumetric efficiency is maintained even as oil temperatures rise.

• Specialized DU Composite Bearings: Equipped with PTFE-coated DU bearings, these pumps offer superior dry-friction resistance and radial load capacity, significantly extending service life in frequent start-stop environments.

• Low-Pulsation Gear Grinding: Gears are precision-ground and profile-modified to minimize fluid trapping. This results in a noise reduction of 3-5 dB(A) compared to standard pumps, delivering a smoother hydraulic flow.

Application Areas:

• Forklift Systems: Primary lift and steering pumps for Toyota, Komatsu, and other Japanese forklift brands.

• Aerial Work Platforms: The hydraulic heart for scissor lifts and boom lifts.

• Compact Construction Equipment: Auxiliary circuits for mini-excavators and skid steer loaders.

• Agricultural Gear: Hitch mechanisms for tractors and power sources for harvesters.

Expert Maintenance Tips:

• Inlet Environment Check: Prevent cavitation at all costs. Ensure the suction line diameter is sufficient and the suction strainer (100 mesh recommended) is clear to prevent terminal wear on the gear faces.

• Alignment Precision: Always verify the coaxiality between the pump shaft and coupling. Any radial eccentricity will lead to premature bearing failure and shaft seal leakage.

• System Flushing: We recommend system filtration of NAS Class 9 (ISO 18/16/13) or better. Change hydraulic oil every 2000 hours of operation to maintain optimal lubrication for the precision bushes.