HPLPB226SMNG6G6BAD Bondioli Hydraulic Gear Pump 226cc 310bar

Product Overview

The HPLPB226SMNG6G6BAD 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, with gear pumps 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 88 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, HPLPB226SMNG6G6BAD, belongs to the HPL PA2 Group (Group 2) and is a medium-displacement specification within the HPL Series. The “226” in the model code indicates a displacement of approximately 22.6 cm³/rev. Group 2 covers displacements from 4.50 to 40.50 cm³/rev. 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):

• HPLPB226SMNG6G6BAD

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

• HPL — Series identifier: Aluminum Standard Gear Pump

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

• 2 — Group size: Group 2 (Medium pump)

• 26 — Displacement code: Corresponds to 22.6 cm³/rev

• SMN — Mounting flange and shaft configuration code (SAE standard flange)

• G6 — Inlet port specification

• G6 — Outlet port specification

• BAD — 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 – 88.0 cm³/rev

• Continuous Operating Pressure: 250 bar

• Peak Pressure: 310 bar

• Speed Range: 500 – 4,000 rpm

• Optimal Efficiency Speed: 1,500 – 3,000 rpm

• Volumetric Efficiency: ≥ 95% (at rated conditions)

• Operating Temperature: -20°C to +80°C (standard NBR seals); up to +120°C with FKM seals

• Fluid Compatibility: Mineral Hydraulic Oil

• Mounting Standards: SAE Flange / ISO Standard Interfaces

• Seals: NBR (Standard), FKM Optional

Group 2 (PA2) Performance Parameters (per Bondioli & Pavesi official documentation):

• Displacement Range: 4.50 – 40.50 cm³/rev (05-40 codes)

• Continuous Pressure: 140 – 240 bar

• Peak Pressure: 180 – 300 bar

• Maximum Speed: 3,500 rpm

• Minimum Speed: 700 rpm

• Weight: 2.30 – 3.60 kg

This Model (HPLPB226) Detailed Specifications (estimated based on Group 2 parameters):

• Geometric Displacement: Approx. 22.6 cm³/rev (model code 226)

• Continuous Operating Pressure: Approx. 210 – 230 bar (based on Group 2 range)

• Peak Pressure: Approx. 280 – 300 bar

• Maximum Speed: Approx. 3,500 rpm

• Minimum Speed: Approx. 700 rpm

• Theoretical Flow (@3,500 rpm): Approx. 79.1 L/min

• Operating Temperature Range: -20°C to +80°C (standard NBR seals)

• Fluid Compatibility: Hydraulic Oil (ISO VG 32 / 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. Group 2 weighs only 2.30 – 3.60 kg, simplifying installation and making it particularly suitable for weight-sensitive mobile equipment and vehicle-mounted hydraulic systems.

2. Precision Hardened Gears with Floating Compensation — High Volumetric Efficiency
Gears are case-hardened (HRC58–62) with micron-level honing, delivering volumetric efficiency of 94%–95%. Axial floating bushings combined with high-pressure radial seals minimize internal leakage, with peak pressures reaching 310 bar.

3. 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.

4. High Pressure Capacity
The HPL Series delivers continuous operating pressures up to 250 bar and peak pressures up to 310 bar. Group 2 offers 140 – 240 bar continuous pressure and peak pressures up to 300 bar, providing excellent pressure capacity in the aluminum gear pump class.

5. 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, shaft, and safety valve options are available to meet diverse system requirements.

6. Wide Temperature and Viscosity Range
Standard NBR seals operate from -20°C to +80°C, with FKM seals optional up to +120°C. Compatible with 5–1000 cSt viscosity fluids, adapting to various operating conditions.

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 recommendedto 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 (standard NBR seals); up to +120°C with FKM seals.

• Recommended viscosity range is 5 – 1000 cSt.

• 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

• 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.