SGP1-32AS1HH-L201C Shimadzu Gear Pump 33.2cc

Product Overview

The SGP1-32AS1HH-L201C is a Shimadzu SGP1 Series high-pressure external gear pump in the size-32 configuration.

Shimadzu officially describes the SGP1 family as high-pressure hydraulic gear pumps using special cast-iron bodies designed to withstand surge pressure and demanding temperature and speed conditions. The manufacturer also highlights stable performance under difficult conditions such as high temperature and low speed. (shimadzu.co.jp)

According to Shimadzu’s official SGP1 technical catalog, the size-32 configuration provides 33.2 cm³/rev geometric displacement, not simply 32.0 cm³/rev. The official rating is 20.6 MPa maximum rated pressure, 24.5 MPa instantaneous maximum pressure, 400–3000 rpm operating speed and 4.2 kg standard reference weight. (shimadzu.co.jp)

The SGP1 construction incorporates an aluminum-alloy front cover, aluminum-alloy rear cover, cast-iron body, alloy-steel drive and driven gears, special-alloy side plates and bushes, plus nitrile-rubber sealing components. (shimadzu.co.jp)

Public market information associates SGP1-32AS1HH-L201C with the Shimadzu SGP1 high-pressure gear-pump family and mobile-equipment applications. However, the complete historical suffix S1HH-L201C is not fully decoded by the currently accessible Shimadzu public standard coding table, so those fields should be verified from the physical nameplate before ordering. (made-in-china.com)

Our replacement unit is developed around the original Shimadzu displacement, pressure class, rotation and installation requirements and undergoes 100% simulated operating-condition testing before shipment.

Technical Specifications

SGP1-32AS1HH-L201C

• Model: SGP1-32AS1HH-L201C
• Brand: Shimadzu
• Series: SGP1
• Product Type: High-Pressure External Gear Pump
• Nominal Size: 32
• Geometric Displacement: 33.2 cm³/rev
• Maximum Rated Pressure: 20.6 MPa / 206 bar
• Instantaneous Maximum Pressure: 24.5 MPa / 245 bar
• Minimum Speed: 400 rpm
• Maximum Speed: 3000 rpm
• Inlet Pressure: -0.02 to 0.2 MPa
• Control: Fixed Displacement
• Drive: Mechanical Rotary Drive
• Housing: Cast Iron
• Front Cover: Aluminum Alloy
• Rear Cover: Aluminum Alloy
• Drive Gear: Alloy Steel
• Driven Gear: Alloy Steel
• Side Plates: Special Alloy
• Bushes: Special Alloy
• Seals: Nitrile Rubber
• Standard Size-32 Reference Weight: 4.2 kg
• Standard Size-32 Reference Dimensions: L1 128.5 mm / L2 142.0 mm / L3 118.5 mm
• Rotation: L corresponds to Counterclockwise in Shimadzu’s standard SGP1 coding system; verify the physical nameplate before replacement.
• S1HH-L201C: Historical configuration code not fully decoded in the current public OEM standard documentation; no unverified interface specification is assigned.

(shimadzu.co.jp)

Related Series and SEO Keywords

The supplied title also contains:

• SGP1
• SGP2
• SGP
• High Pressure Hydraulic Gear Pump
• Forklift Pump

Shimadzu officially specifies:

• SGP1: 16–36 cm³/rev
• SGP1 maximum rated pressure: 20.6 MPa
• SGP2: 20–52 cm³/rev
• SGP2 maximum rated pressure: 24.5 MPa

Both families use cast-iron pump bodies, while the SGP2 series additionally uses a specialized ceramic-related sealing structure. (shimadzu.co.jp)

For this product page, SGP1-32AS1HH-L201C should remain the primary SKU keyword, while SGP1, SGP2 and forklift/mobile-hydraulic terms should be incorporated through body copy and related-product links rather than being stuffed into the SEO title.

Key Technical Advantages

1. 33.2 cm³/rev Actual Displacement

Shimadzu specifies 33.2 cm³/rev for size 32. This distinction is important for hydraulic-system sizing because the nominal size does not equal the exact geometric displacement. (shimadzu.co.jp)

At 3000 rpm, theoretical displacement flow is:

33.2 × 3000 / 1000 = 99.6 L/min

This is a theoretical value before volumetric losses and should not be interpreted as guaranteed delivered flow.

2. High-Strength Cast-Iron Housing

SGP1 uses a special cast-iron body designed to tolerate surge-pressure loading and demanding mobile-hydraulic duty cycles. (shimadzu.co.jp)

3. Alloy-Steel Gear Set

Both drive and driven gears are specified as alloy steel in Shimadzu’s official SGP1 construction documentation, supporting high-load gear engagement and long-term durability. (shimadzu.co.jp)

4. Special-Alloy Side Plates and Bushes

Special-alloy side plates and bushes support the rotating gear set and help manage operating clearances and wear under high hydraulic loading. (shimadzu.co.jp)

5. High-Pressure, Wide-Speed Capability

The official size-32 specification provides:

• 20.6 MPa maximum rated pressure
• 24.5 MPa instantaneous maximum pressure
• 400–3000 rpm

This provides a broad operating envelope for engine-, PTO- and motor-driven hydraulic systems. (shimadzu.co.jp)

6. Stable Low-Speed Performance

Shimadzu specifically highlights stable SGP performance under difficult conditions such as high temperature and low speed, an important characteristic for mobile equipment. (shimadzu.co.jp)

Application Areas

Shimadzu officially identifies hydraulic gear pumps for:

• Industrial Vehicles
• Construction Machinery
• Agricultural Machinery
• Special-Purpose Vehicles

(shimadzu.co.jp)

Typical applications include:

Forklifts and Industrial Vehicles

• Forklifts
• Material-handling vehicles
• Industrial vehicles
• Hydraulic lifting systems

Construction Machinery

• Wheel loaders
• Excavator auxiliary hydraulic systems
• Mobile hydraulic machinery

Agricultural Machinery

• Tractors
• Harvesters
• Agricultural implements

Industrial Hydraulic Equipment

• Hydraulic power units
• Industrial hydraulic stations
• Auxiliary hydraulic circuits

Public market information also associates SGP1-32AS1HH-L201C with Shimadzu high-pressure gear pumps and mobile equipment, although final equipment compatibility should be confirmed against the complete original pump configuration. (made-in-china.com)

Expert Maintenance Tips

Do Not Advertise the Size as 32.0 cm³/rev

The correct official size-32 geometric displacement is:

33.2 cm³/rev

not 32.0 cm³/rev. (shimadzu.co.jp)

Verify Rotation Direction

Shimadzu’s standard coding defines:

• L = Counterclockwise
• R = Clockwise

Changing rotation direction also changes the relative suction and discharge-port arrangement. (shimadzu.co.jp)

Maintain Proper Inlet Conditions

The official SGP1 inlet-pressure range is:

-0.02 to 0.2 MPa

Blocked suction filters, undersized suction lines, excessive restriction or air leakage can cause cavitation and reduced pump performance. (shimadzu.co.jp)

Do Not Use Peak Pressure as Continuous Pressure

For SGP1:

20.6 MPa = maximum rated pressure

24.5 MPa = instantaneous maximum pressure

The peak value should therefore not be treated as a continuous-duty pressure rating. (shimadzu.co.jp)

Verify Mounting and Shaft Interfaces

Because the full historical S1HH-L201C configuration is not completely decoded in the current public Shimadzu standard documentation, verify:

• Pilot diameter
• Bolt pattern
• Shaft profile
• Shaft length
• Port location
• Port thread
• Rotation
• Overall length

Check Coupling Alignment

For engine-, PTO- or motor-driven installations, control shaft alignment and avoid excessive radial or axial loading on the pump shaft.

Clean the Hydraulic Circuit During Replacement

Inspect:

• Hydraulic oil
• Suction filter
• Return filter
• Reservoir
• Suction line
• Drive coupling

Contamination from a failed pump can rapidly damage the replacement gear set, side plates and bushes.