HPLPA341SW4G7G6B00 Bondioli Hydraulic Gear Pump 34cc 310bar

Product Overview

The HPLPA341SW4G7G6B00 is a Bondioli & Pavesi HPL Series (Series L) aluminum-bodied fixed displacement external gear pump. Founded in 1950, Bondioli & Pavesi holds a leading position in the power transmission sector. Its gear pumps are renowned for their robust construction, cost-effective price/performance ratio, easy installation, customizable solutions, and the ability to integrate control valves.

The HPL Series features high-strength aluminum bodies and is available in 5 group sizes (Group 0 through Group 4), with displacements ranging from 0.19 cm³/rev to 90 cm³/rev. Continuous operating pressures reach 250 bar, with peak pressures up to 310 bar. The series employs a modular design, enabling multiple pumps to be assembled by combining sections of different units, families, and displacements.

This model, HPLPA341SW4G7G6B00, belongs to the HPL PA3 Group (Group 3) and is a large-displacement specification within the HPL Series. The “341” in the model code indicates a displacement of approximately 34 cm³/rev. Group 3 covers displacements from 21.50 to 88.00 cm³/rev. This pump can replace KLPS/G341D and other models. As an original specification model within the Bondioli & Pavesi HPL line, this product enables direct form-fit-function interchangeability with original Bondioli units—no modifications to piping or mounting interfaces required. Our replacement solution strictly adheres to Bondioli technical standards and undergoes 100% simulated in-service testing to ensure performance, reliability, and service life identical to OEM products.

Technical Specifications

Applicable Model (Primary):

• HPLPA341SW4G7G6B00

• Replacement for: KLPS/G341D

Model Code Breakdown (per Bondioli & Pavesi naming convention):

• HPL — Series identifier: Aluminum Standard Gear Pump

• PA — Pump type: Single Pump (P = Pump)

• 3 — Group size: Group 3 (Large pump)

• 41 — Displacement code: Corresponds to 34 cm³/rev

• SW — Mounting flange and shaft configuration code

• G7 — Inlet port specification

• G6 — Outlet port specification

• B00 — 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

• Displacement Range: 0.19 – 90.0 cm³/rev

• Continuous Operating Pressure: Up to 250 bar

• Peak Pressure: Up to 310 bar

• Speed Range: 500 – 4,000 rpm

• Fluid Compatibility: Hydraulic Oil (ISO VG 46)

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

• Seals: Per specific configuration (NBR / FKM optional)

• Mounting Standards: SAE Flange / ISO Standard Interfaces

• Mounting: SAE Standard Flange

• Optional Configurations: Aluminum or cast iron flanges, belt drive, external mounts

Group 3 (PA3) Performance Parameters (per Bondioli & Pavesi official documentation):

• Displacement Range: 21.50 – 88.00 cm³/rev

• Continuous Pressure: 110 – 220 bar

• Intermittent Pressure: 120 – 250 bar

• Peak Pressure: 170 – 310 bar

• Maximum Speed: 2,500 – 3,000 min⁻¹

• Minimum Speed: 600 – 700 min⁻¹

This Model (HPLPA341) Detailed Specifications:

• Geometric Displacement: Approx. 34 cm³/rev (model code 341)

• Rated Operating Pressure: Approx. 300 bar

• Peak Pressure: Approx. 310 bar

• Maximum Speed: Approx. 3,000 rpm

• Minimum Speed: Approx. 600 – 700 min⁻¹

• Theoretical Flow (@3,000 rpm): Approx. 102 L/min

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

• Fluid Compatibility: Hydraulic Oil (ISO VG 46)

Key Technical Advantages

1. High-Strength Aluminum Body — Lightweight Design
The HPL Series features a high-strength aluminum body that delivers excellent performance while significantly reducing overall weight. The lightweight design simplifies installation and is particularly suitable for weight-sensitive mobile equipment and vehicle-mounted hydraulic systems.

2. Modular Design — Flexible Multi-Pump Configurations
The HPL Series employs a modular design, enabling multiple pumps to be assembled by combining sections of different units, families, and displacements. Products can be configured to meet specific machine requirements, with single/tandem/triple configurations available.

3. High Pressure Capacity
The HPL Series delivers continuous operating pressures up to 250 bar and peak pressures up to 310 bar. Group 3 offers peak pressures up to 310 bar, providing excellent pressure capacity in the aluminum gear pump class.

4. Rich Configuration Options with Integration Capabilities
The HPL Series offers options for aluminum or cast iron flanges, belt drive installation, external mounts, and pressure/directional control valves. Flange and shaft options are available to meet diverse system requirements.

5. Wide Displacement Coverage for Versatile Applications
The HPL Series offers 5 group sizes with displacements from 0.19 to 90.0 cm³/rev. As a Group 3 large-displacement model, HPLPA341 with 34 cc/rev is particularly suitable for construction machinery and agricultural equipment hydraulic systems requiring medium-flow high-pressure output.

Application Areas

• Agricultural Machinery: Tractor hydraulic systems, combine harvesters, seeders, fertilizer spreaders

• Construction Equipment: Hydraulic systems for small to medium construction machinery

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

• Hydraulic Steering Systems: Power steering for mobile equipment

• Industrial Hydraulic Systems: Hydraulic power units for industrial equipment

• Road Building Machinery: Hydraulic systems for road construction equipment

Expert Maintenance Tips

1. Installation Precautions

• The HPL Series is a uni-directional rotation pump—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.

• Refer to the Bondioli & Pavesi official “Gear pumps and motors Installation and Operation Manual” for proper installation procedures.

2. Fluid Management

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

• System fluid cleanliness must meet Bondioli-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 (up to 300 bar) while monitoring noise, temperature, and system pressure for normal operation.

4. Routine Maintenance

• The HPL gear pump itself is 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.