HPGPA336D21G7G6B00 Bondioli Hydraulic Gear Pump 36cc 280bar

Product Overview

The Bondioli & Pavesi HPG and HPL Series hydraulic gear pumps are two major product lines from Bondioli & Pavesi, a globally recognized leader in hydraulic transmission and control technology. Bondioli gear pumps are renowned for their rugged construction, cost-effective price/performance ratio, easy installation, customizable solutions, and the ability to integrate control valves.

The HPG Series (Series G) features cast iron bodies and is available in Group 2, Group 3, and Group 4 sizes, with displacements ranging from 4.5 cm³/rev to 90.5 cm³/rev and maximum pressures up to 320 bar. The HPG Series is specifically engineered for heavy-duty applications where higher pressures and mechanical stresses are common.

The HPL Series features aluminum bodies and is available in 5 group sizes, with displacements ranging from 0.19 cm³/rev to 90 cm³/rev and maximum pressures up to 310 bar. The HPL Series incorporates helical gears and specialized finishing processes that significantly reduce hydraulic pulsation and noise levels, making it the ideal choice for mobile and industrial applications requiring excellent acoustic comfort.

The featured models HPGPA336D21G7G6B00 (HPG Series Group 3) and HPLPA211DMNG4G4B00 (HPL Series Group 2) are original Bondioli & Pavesi specification models, enabling direct form-fit-function interchangeability with original Bondioli units—no modifications to piping or mounting interfaces required. Our replacement solutions strictly adhere to Bondioli technical standards and undergo 100% simulated in-service testing to ensure performance, reliability, and service life identical to OEM products.

Technical Specifications 

Model 1: HPGPA336D21G7G6B00 (HPG Series Group 3)

Applicable Model:

• HPGPA336D21G7G6B00

Model Code Breakdown:

• Product Series: HPG — Bondioli & Pavesi Cast Iron Gear Pump

• Group Size: A3 — Group 3 (displacement range 21.5 – 88.0 cm³/rev)

• Displacement Code: 336 — 36 cm³/rev

• Configuration: D21G7G6 — Specific flange/shaft/port configuration

Series Technical Specifications (per Bondioli & Pavesi official documentation):

• Product Series: Bondioli & Pavesi HPG Cast Iron Gear Pump

• Body Material: High-Strength Cast Iron

• Pump Type: Fixed Displacement External Gear Pump

• Mounting: SAE / ISO Standard Flanges

• Fluid Compatibility: Mineral Hydraulic Oil

Group 3 General Parameters:

• Displacement Range: 21.50 – 88.00 cm³/rev

• Continuous Pressure: 180 – 280 bar

• Intermittent Pressure: 190 – 300 bar

• Peak Pressure: 200 – 310 bar

• Maximum Speed: 2,500 – 3,000 min⁻¹

• Minimum Speed: 500 min⁻¹

• Weight: 12.0 – 17.2 kg

This Model (336 displacement) Estimated Specifications:

• Geometric Displacement: 36 cm³/rev

• Continuous Operating Pressure: Approx. 280 bar (per Group 3 parameters)

• Peak Pressure: Approx. 300 – 310 bar

• Maximum Speed: Approx. 2,800 – 3,000 min⁻¹

• Theoretical Flow (@3,000 rpm): Approx. 108 L/min

Model 2: HPLPA211DMNG4G4B00 (HPL Series)

Applicable Model:

• HPLPA211DMNG4G4B00

Reference Models:

• HPLPA211SMNG6G4BHY

• HPLPA211DMNG6G4BEC

• HPLPB211DMNG6G4BEC

Model Code Breakdown:

• Product Series: HPL — Bondioli & Pavesi Aluminum Gear Pump

• Group Size: PA2 — Group 2

• Displacement Code: 211 — 211 cm³/rev

• Configuration: DMNG4G4 — Specific configuration code

Series Technical Specifications (per Bondioli & Pavesi official documentation):

• Product Series: Bondioli & Pavesi HPL Aluminum Gear Pump

• Body Material: High-Strength Aluminum Alloy

• Pump Type: Fixed Displacement External Gear Pump

• Mounting: SAE / ISO Standard Flanges

• Fluid Compatibility: Mineral Hydraulic Oil (ISO VG 46)

This Model Detailed Specifications (211 displacement):

• Geometric Displacement: 211 cm³/rev

• Operating Pressure: Up to 300 bar

• Maximum Speed: 3,000 min⁻¹

• Operating Temperature Range: -20°C to +80°C

• Fluid Compatibility: Hydraulic Oil (ISO VG 46)

• Weight: Approx. 5 kg

• Material: Aluminum Alloy

Key Technical Advantages

HPG Series (Cast Iron) Key Advantages

1. High-Strength Cast Iron Housing for Superior Durability
The HPG Series features a high-strength cast iron housing, specifically engineered for heavy-duty applications and harsh operating conditions. The cast iron construction delivers outstanding rigidity and impact resistance, making it suitable for mobile equipment subjected to higher pressures and mechanical stresses.

2. Wide Displacement Range for Flexible System Adaptation
The HPG Series offers Group 2, 3, and 4 sizes with displacements from 4.5 cm³/rev to 90.5 cm³/rev. Supporting single and multiple pump configurations with sections driven by splined joints.

3. High Pressure Capacity
The HPG Series delivers continuous operating pressures up to 280 bar and peak pressures up to 320 bar. Group 3 offers 180-280 bar continuous and 200-310 bar peak pressures.

4. Flexible Valve Integration
The HPG Series offers optional pressure and directional control valves integrated into the rear cover, as well as belt drive options and external mounting brackets.

HPL Series (Aluminum) Key Advantages

1. Lightweight Aluminum Design
The HPL Series features a high-strength aluminum alloy body that delivers excellent performance while significantly reducing overall weight (HPLPA211 weighs approx. 5 kg). The lightweight design simplifies installation and is particularly suitable for weight-sensitive mobile equipment.

2. Helical Gears with Precision Finishing — Ultra-Low Noise Operation
The HPL Series incorporates helical gears with specialized finishing processes that significantly reduce hydraulic pulsation and noise levels. It is especially recommended for mobile and industrial applications requiring excellent acoustic comfort.

3. Modular Design with Flexible Multi-Pump Configurations
The HPL Series features a modular design that enables multi-pump assemblies by combining different units, series, and displacements. Silent-grade and standard-grade components share the same modular logic for flexible combination.

4. Wide Displacement Coverage with High Pressure Capability
The HPL Series offers 5 group sizes with displacements from 0.19 to 90 cm³/rev and pressures up to 310 bar. The HPLPA211 model delivers 211 cc/rev displacement at up to 300 bar.

Application Areas

HPG Series (Cast Iron) Applications

• Heavy Construction Equipment: Large tractors, olive shakers, mixer wagons, fruit picking machines

• Agricultural Machinery: Heavy-duty agricultural equipment hydraulic systems

• Mining Equipment: Mining machinery hydraulic power systems

• Construction Machinery: Road construction and building industry mobile equipment

HPL Series (Aluminum) Applications

• Agricultural Machinery: Tractor hydraulic systems, combine harvesters, sprayers

• Construction Equipment: Loaders, excavator hydraulic systems

• Material Handling Equipment: Forklift hydraulic systems, aerial work platforms

• Industrial Hydraulic Systems: Industrial hydraulic power units

• Mobile Equipment: Hydraulic cylinders, hydraulic motors, and hydraulic steering systems

Expert Maintenance Tips

1. Installation Precautions

• Verify that the system’s required rotation direction matches the pump’s identification marking before installation.

• Ensure coaxial alignment between the pump and drive shaft; flexible couplings are recommended to avoid radial loads on the pump shaft.

• The suction line diameter must not be smaller than the pump inlet port to prevent cavitation.

• HPG Series cast iron pumps are heavier (Group 3: 12-17 kg)—ensure the mounting bracket has adequate load capacity.

2. Fluid Management

• Use anti-wear hydraulic oils conforming to ISO VG 32 / VG 46 standards.

• System fluid cleanliness must meet Bondioli & Pavesi-recommended standards.

• Operating temperature should be maintained within -20°C to +80°C.

• Prime the pump by filling the housing with hydraulic fluid through the suction port before initial start-up. Never run the pump dry.

3. Start-Up & Commissioning

• Use jog start method for initial start-up; verify correct rotation direction before continuous operation.

• Allow the pump to run under no-load (low pressure) conditions for 2-3 minutes to purge air and ensure proper lubrication.

• Gradually increase to operating pressure while monitoring noise, temperature, and system pressure for normal operation.

4. Routine Maintenance

• Bondioli gear pumps themselves are maintenance-free; however, regular maintenance of the entire hydraulic system is essential for trouble-free pump operation.

• Inspect system fluid cleanliness and condition every 1,000-2,000 operating hours.

• Regularly replace return line filters and suction strainers to prevent contaminant ingress into the pump body.