SGP1-30F2H1-L Shimadzu Gear Pump 29.9cc 20.6MPa

Product Overview

The SGP1-30F2H1-L is a Shimadzu SGP1 Series high-pressure external gear pump in the nominal size-30 configuration.

Shimadzu officially describes the SGP1 and SGP2 families as high-pressure hydraulic gear pumps using special cast-iron bodies designed to withstand surge pressure and demanding temperature and speed conditions. The manufacturer specifically highlights stable performance under difficult conditions including high temperature and low speed.

For SGP1 size 30, Shimadzu specifies an actual geometric displacement of 29.9 cm³/rev, a 20.6 MPa maximum rated pressure, 24.5 MPa instantaneous maximum pressure, 400–3000 rpm speed range, and a 4.1 kg standard reference weight.

The SGP1 construction uses a cast-iron body, aluminum-alloy front and rear covers, alloy-steel drive and driven gears, special-alloy side plates and bushes, and nitrile-rubber sealing components.

The complete SGP1-30F2H1-L configuration can be decoded from Shimadzu’s official ordering system as:

• SGP1 = SGP1 Series
• - = Standard φ82 mm-class mounting pilot
• 30 = Nominal size 30
• F = Rear-cover side port
• 2 = G-thread port
• H = Horizontal two-bolt mounting
• 1 = SAE 13-tooth spline shaft
• L = Counterclockwise rotation

This level of configuration detail is important for genuine field interchangeability because displacement alone does not establish mechanical compatibility.

Our replacement pump is developed around the original Shimadzu displacement, rotation, shaft and mounting requirements and undergoes 100% simulated operating-condition testing to verify flow, pressure, leakage and operational stability.

Technical Specifications

SGP1-30F2H1-L

• Model: SGP1-30F2H1-L
• Brand: Shimadzu
• Series: SGP1
• Product Type: High-Pressure External Gear Pump
• Nominal Size: 30
• Geometric Displacement: 29.9 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
• Mounting Pilot: Standard φ82 mm class
• Port Position: F — Rear-Cover Side Port
• Port Type: 2 — G Thread
• Mounting: H — Horizontal Two-Bolt Mounting
• Shaft: 1 — SAE 13-Tooth Spline Shaft
• Rotation: L — Counterclockwise
• Standard Reference Weight: 4.1 kg
• Standard Size-30 Dimensions: L1 124.5 mm / L2 138.0 mm / L3 114.5 mm

SGP1-30F2H1-R

• Model: SGP1-30F2H1-R
• Brand: Shimadzu
• Series: SGP1
• Geometric Displacement: 29.9 cm³/rev
• Maximum Rated Pressure: 20.6 MPa
• Instantaneous Maximum Pressure: 24.5 MPa
• Minimum Speed: 400 rpm
• Maximum Speed: 3000 rpm
• Inlet Pressure: -0.02 to 0.2 MPa
• Control: Fixed Displacement
• Port Position: F — Rear-Cover Side Port
• Port Type: 2 — G Thread
• Mounting: H — Horizontal Two-Bolt Mounting
• Shaft: 1 — SAE 13-Tooth Spline Shaft
• Rotation: R — Clockwise
• Standard Reference Weight: 4.1 kg

Shimadzu explicitly defines L as counterclockwise and R as clockwise rotation and notes that reversing the rotation also reverses the relative suction/discharge-port positions.

SGP1-30F2H2-L

This configuration should be treated as a configuration requiring verification:

• Model: SGP1-30F2H2-L
• Brand: Shimadzu
• Series: SGP1
• Nominal Size: 30
• Geometric Displacement: 29.9 cm³/rev
• Maximum Rated Pressure: 20.6 MPa
• Instantaneous Maximum Pressure: 24.5 MPa
• Minimum Speed: 400 rpm
• Maximum Speed: 3000 rpm
• Control: Fixed Displacement
• Housing: Cast Iron
• Standard Size-30 Reference Weight: 4.1 kg
• F = Rear-cover side port
• 2 = G-thread port
• H = Horizontal two-bolt mounting
• H2 shaft field: Shimadzu’s current public SGP1 standard code lists shaft types 1 and 5 only. The meaning of shaft code 2 cannot therefore be independently verified from the current OEM documentation.

For procurement, the shaft should be verified from the original nameplate or physical shaft rather than inferred from the code.

SGP1 / SGP2 SEO Structure

The supplied keywords include:

• SGP
• SGP1
• SGP2
• SGP1-30F2H1-L
• SGP1-30F2H1-R
• SGP1-30F2H2-L
• Forklift Hydraulic Pump
• Hydraulic Gear Pump

A cleaner SEO hierarchy is:

Primary SKU:
SGP1-30F2H1-L

Series:
Shimadzu SGP1

Product Category:
High-Pressure Hydraulic Gear Pump

Application:
Forklift Hydraulic Pump / Mobile Hydraulic Equipment

Related Series:
SGP2

Shimadzu officially identifies its hydraulic gear pumps for industrial vehicles, construction machinery, agricultural machinery and special-purpose vehicles. Historical Shimadzu corporate reporting also specifically references hydraulic-equipment demand related to construction machinery and industrial vehicles such as forklifts.

Key Technical Advantages

1. Exact 29.9 cm³/rev Displacement

Shimadzu specifies 29.9 cm³/rev for SGP1 size 30. This is more accurate for hydraulic sizing than treating the nominal “30” designation as an exact displacement value.

At 3000 rpm, theoretical displacement flow is:

29.9 × 3000 / 1000 = 89.7 L/min

This is a theoretical displacement calculation before volumetric losses and should not be treated as guaranteed delivered flow.

2. Special Cast-Iron Housing

The SGP1 uses a special cast-iron body designed for high-pressure operation and surge-pressure loading.

3. Alloy-Steel Gear Pair

Shimadzu specifies alloy steel for both drive and driven gears. Gear material and machining accuracy directly affect load capacity, mechanical efficiency, leakage behavior and service life.

4. Special-Alloy Side Plates and Bushes

Special-alloy side plates and bushes support the gear set and help manage operating clearances, friction and wear under hydraulic load.

5. 20.6 MPa Rated / 24.5 MPa Instantaneous Maximum Pressure

The official SGP1 specification distinguishes:

• 20.6 MPa = Rated Pressure
• 24.5 MPa = Instantaneous Maximum Pressure

The 24.5 MPa value should not be marketed as continuous operating pressure.

6. 400–3000 rpm Operating Range

Size 30 is officially specified from 400 to 3000 rpm, supporting a broad range of mechanically driven mobile hydraulic systems.

7. SAE 13-Tooth Spline Shaft

For the verified SGP1-30F2H1-L/R configurations, shaft code 1 identifies an SAE 13-tooth spline shaft. This is a critical compatibility parameter during replacement.

Application Areas

Shimadzu officially identifies hydraulic gear-pump applications in:

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

Typical applications include:

Forklifts and Industrial Vehicles

• Diesel forklifts
• LPG forklifts
• Material-handling vehicles
• Main forklift hydraulic systems

Construction Machinery

• Wheel loaders
• Mobile construction equipment
• Auxiliary hydraulic systems

Agricultural Machinery

• Tractors
• Harvesters
• Agricultural implements

Special-Purpose Vehicles

• Municipal vehicles
• Utility vehicles
• Special-purpose mobile equipment

Expert Maintenance Tips

Do Not Advertise Size 30 as 30.0 cm³/rev

The official displacement is:

SGP1 Size 30 = 29.9 cm³/rev.

Verify the H1 Shaft Interface

For SGP1-30F2H1-L/R, code 1 means an SAE 13-tooth spline shaft. Check spline geometry, engagement depth and coupling condition before installation.

Verify L/R Rotation

Shimadzu defines:

• L = Counterclockwise
• R = Clockwise

Rotation also affects the relative suction/discharge-port arrangement.

Maintain Proper Inlet Conditions

The official SGP1 inlet-pressure range is -0.02 to 0.2 MPa. Restricted suction lines, clogged filters or air leakage can cause cavitation, noise and reduced output.

Do Not Run Continuously at 24.5 MPa

The 24.5 MPa value is an instantaneous maximum, not the continuous rated pressure. Continuous-duty design should use 20.6 MPa as the key reference value.

Verify the H2 Configuration Before Ordering

Because the current Shimadzu SGP1 OEM documentation explicitly lists only shaft codes 1 and 5, the shaft meaning of SGP1-30F2H2-L should be verified from the actual pump rather than guessed.

Clean the Hydraulic Circuit During Replacement

Inspect:

• Hydraulic oil
• Suction filter
• Return filter
• Reservoir
• Suction line
• Coupling

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