SGP2A52L723 | Shimadzu Gear Pump 52.8cc 172bar Forklift

Product Overview

The SGP2A52L723 is a flagship model of the SHIMADZU SGP2 series high-pressure external gear pumps. Shimadzu is a globally recognized manufacturer of hydraulic components, and its SGP series gear pumps are renowned for high durability, high efficiency, and low noise, widely used in forklifts, wheel loaders, and other material handling equipment.

The SGP2 series features axial clearance automatic compensation and radial hydraulic balance construction, with a three-opening (three-piece) housing design. The SGP2A52L723 delivers a displacement of 52.8 cm³/rev, making it one of the larger displacement models in the SGP2 series, specifically designed for hydraulic systems requiring high flow output in forklifts and wheel loaders.

Model code SGP2A52L723 breakdown:

• SGP2: Second generation of the SGP series

• A: Series variant designation

• 52: Displacement specification – 52.8 cm³/rev

• L723: Configuration code (ports, shaft, rotation direction, etc.)

The SGP series is broadly compatible with major forklift brands including Linde, Hyster, Yale, and Cat®. Replacement equivalents for SGP2A52L723 include SGP2-52, SGP2-52F1H2-L056, and others.

We specialize in the R&D and manufacturing of high-pressure pumps, motors, and valve groups. The SGP2A52L723 offers 100% direct interchangeability with original Shimadzu SGP2 series pumps of the same model—no modification required. Every unit undergoes 100% simulated load testing before shipment, ensuring performance validation under real-world operating conditions.

Technical Specifications 

Model & Series Information:

• Model: SGP2A52L723

• Brand Series: SHIMADZU SGP2 Series

• Pump Type: External gear pump

• Body Material: High-strength cast iron

• Construction: Three-opening structure with axial clearance compensation & radial hydraulic balance

Displacement & Pressure Parameters:

• Displacement: 52.8 cm³/rev

• Rated Working Pressure: 17.2 MPa (172 bar / 2494 psi)

• Peak Pressure: 20.6 MPa (206 bar / 2987 psi)

• Series Maximum Peak Pressure: 24.5 MPa (245 bar)

• Inlet Pressure Range: -0.02 ~ 0.2 MPa

Speed Parameters:

• Minimum Speed: 500 rpm

• Maximum Speed: 3000 rpm

• Speed Range: 500 – 3000 rpm

Physical & Configuration Parameters:

• Mounting Flange: A-type φ82.55 pilot, 2-bolt horizontal H-mount

• Drive Shaft: SAE 13-tooth spline shaft

• Port Configuration: Side flange ports

• Rotation Direction: Counter-clockwise (CCW)

• Weight: Approx. 5.4 kg (SGP2 series 52cc specification)

Operating Conditions:

• Fluid Media: ISO VG32 / VG46 anti-wear hydraulic oil

• Compatible Equipment: Forklifts, wheel loaders, material handling equipment, construction machinery

Key Technical Advantages

1. Axial Clearance Compensation + Radial Hydraulic Balance – Guaranteed High Efficiency

The SGP2 series features axial clearance automatic compensation and radial hydraulic balance design, maintaining optimal volumetric efficiency across all operating conditions. The three-opening housing design further optimizes internal sealing performance, ensuring stable output during continuous high-pressure operation.

2. Exceptional Durability – One Million Cycle Impact Fatigue Test

Shimadzu SGP series gear pumps have passed one million cycle impact fatigue tests under 24.5 MPa high-pressure conditions. This rigorous durability testing fully demonstrates their long-term reliability in forklift, wheel loader, and other applications with frequent start-stop cycles and severe load fluctuations.

3. High-Strength Cast Iron Body – Withstands Harsh Operating Conditions

The SGP2 series features a high-strength cast iron pump body with excellent mechanical strength and impact resistance. Compared to aluminum alloy bodies, cast iron provides superior durability in harsh conditions such as forklift and construction machinery applications.

4. Low-Noise Operation – Improves Operator Environment

The SGP series is renowned for low noise, smart structure, and easy installation. The low-noise characteristic significantly improves the forklift operator’s working environment, reducing fatigue during extended operation.

5. Broad OEM Interchangeability – Perfect Fit for Major Forklift Brands

SGP2 series hydraulic gear pumps offer direct replacement for original equipment in popular forklift brands including Linde, Hyster, Yale, and Cat®. The standard A-type φ82.55 pilot, 2-bolt H-mount flange, and SAE 13-tooth spline shaft ensure complete compatibility with original equipment.

Application Areas

• Counterbalance Forklifts—hydraulic systems for Linde, Hyster, Yale, TCM, Cat® and other brands

• Wheel Loaders—bucket lift and steering hydraulic systems

• Material Handling Equipment—hydraulic systems for various warehousing and handling equipment

• Construction Machinery—hydraulic systems for small construction equipment

• Industrial Vehicles—hydraulic systems for tow tractors, platform trucks, and other industrial vehicles

Expert Maintenance Tips

Model Code Verification (verify each element):

Before installation, carefully verify the complete model code on the pump nameplate and confirm the following:

• SGP2: Second generation of the SGP series, distinct from the SGP1 series.

• A: Series variant designation – A-type typically corresponds to specific mounting configurations.

• 52: Displacement specification – 52.8 cm³/rev.

• L723: Configuration code – includes port type, shaft specification, rotation direction, and other configuration details.

Verify Rotation Direction:

The standard SGP2A52L723 is configured for counter-clockwise rotation (CCW) . Confirm that the drive shaft rotation matches the pump’s rotation requirement before installation. Incorrect rotation will prevent pressure build-up and may damage internal gears and bearings.

Mounting Flange and Drive Shaft Matching:

Verify that the equipment side uses A-type φ82.55 pilot, 2-bolt horizontal H-mount flange and SAE 13-tooth spline shaft. Any mounting dimension mismatch may prevent installation or cause abnormal operation.

Suction Line and Fluid Requirements:

ISO VG32 / VG46 anti-wear hydraulic oil is recommended. Ensure the suction line is properly sealed with no air leaks and the suction filter is not clogged. Inlet pressure must be maintained within -0.02 ~ 0.2 MPa. The SGP2 series features excellent oil absorption properties, but insufficient suction may still cause cavitation damage.

First-Start Priming Procedure:

After new pump installation or system overhaul, ensure the pump cavity is filled with oil before first start. Jog the pump at low speed and low pressure until the pump body is fully filled with oil and air is purged, then gradually increase to rated speed and working pressure. Running the pump dry will cause irreversible damage to gears and bearings.

Oil Cleanliness and Regular Maintenance:

Replace hydraulic oil and return filters every 1,000 operating hours or per equipment manufacturer recommendations. Using hydraulic oil with proper cleanliness will significantly extend pump service life. Regularly monitor pump body temperature—if it consistently exceeds +80°C, inspect the system cooling.

SDY Series Supplementary Information:

The SDY series is also part of the SHIMADZU gear pump product line, alongside the SGP series. Key SDY series models include SDY1A, SDY1B, SDYB, SDYA, and others. SDY1A36 is a commonly referenced model, with complete model numbers typically including detailed configuration suffixes (e.g., SDY1A36.12G9H1-L573). The SDY series is primarily used in forklift and industrial vehicle hydraulic systems. Specific parameters vary by model configuration—please verify the complete model code on the original pump nameplate before ordering.