HPV135-02 Linde Variable Piston Pump 135.7 cm³

Product Overview

The Linde HPV-02 is a high-pressure variable displacement axial piston pump designed for closed-loop hydrostatic transmission systems. Linde documentation describes a swash-plate architecture with 21° technology, hydrostatic bearing support, a rigid monoshell housing, integrated control piston, pressure-relief functions, SAE high-pressure ports and multiple servo-control options.

The submitted product title contains three different Series 02 units:

• HMV75-02 — variable displacement hydraulic motor
• HPV135-02 — variable displacement hydraulic pump
• HMV105-02 — variable displacement hydraulic motor

The identifiers H2X233U022941 and H2X234C04168 follow the Linde nameplate serial-number structure, while 2571 is consistent with the four-digit BOM identifier used on Linde nameplates. The exact control configuration cannot be safely derived from these identifiers alone.

Our replacement engineering approach focuses on complete in-place interchangeability, followed by 100% simulated working-condition testing.

Technical Specifications — HPV135-02

• Brand: Linde Hydraulics
• Series: HPV-02
• Model: HPV135-02
• Product type: Variable displacement axial piston pump
• Circuit: Closed-loop hydrostatic system
• Maximum displacement: 135.7 cm³/rev
• Minimum operating speed: 500 rpm
• Maximum continuous operating speed: 3,000 rpm
• Maximum intermittent speed: 3,200 rpm
• Nominal pressure: 450 bar
• Maximum intermittent pressure: 500 bar
• Permissible housing pressure: 2.5 bar
• Torque at Δp = 430 bar / 20 bar charge pressure: 928 Nm
• Corner power: 305 kW
• Approximate weight with H1 control, without oil: 72 kg
• Housing filling volume with filter: 3.8 dm³
• Maximum moment of inertia: 2.2 × 10⁻² kg·m²
• Axial shaft load: 2,000 N
• Radial shaft load: on request
• Permissible housing temperature: 90°C with minimum viscosity >10 cSt.

Control Configuration

The Linde HPV-02 Series 02 platform provides:

• M1R: Mechanical-hydraulic control
• H1: Hydraulic proportional control
• H1P: Hydraulic proportional control with pressure cut-off
• E1: Electro-proportional control
• E1P: Electro-proportional control with pressure cut-off
• E2: Electro-proportional control with shut-off
• E5: Three-position electric control
• CA: Speed-related hydraulic-mechanical control

The supplied HPV135-02 designation does not contain enough information to identify the exact controller, so the controller must be verified from the complete ordering code.

Technical Specifications — HMV75-02

• Brand: Linde Hydraulics
• Series: HMV-02
• Model: HMV75-02
• Product type: Variable displacement axial piston motor
• Application: Closed- and open-loop operation
• Maximum displacement: 75.9 cm³/rev
• Minimum displacement: 25.3 cm³/rev
• Maximum continuous speed at Vmax: 3,800 rpm
• Maximum intermittent speed at Vmax: 4,100 rpm
• Maximum continuous speed at Vmin: 4,400 rpm
• Maximum intermittent speed at Vmin: 5,000 rpm
• Nominal pressure: 450 bar
• Maximum intermittent pressure: 500 bar
• Permissible housing pressure: 2.5 bar
• Theoretical output torque at 430 bar: 519 Nm
• Theoretical corner power: 207 kW
• Variable-motor weight: 28 kg
• Maximum moment of inertia: 0.79 × 10⁻² kg·m²
• Axial shaft load: 2,000 N
• Radial shaft load: on request.

Identifier Note

H2X233U022941 is formatted like a Linde Series 02 serial identifier. Linde’s published nameplate example uses H2X + type number + year letter + serial number; the exact mapping of 233 to the supplied unit is not independently exposed in the public document reviewed, so it should remain a serial/reference identifier until verified against the physical nameplate.

Technical Specifications — HMV105-02

• Brand: Linde Hydraulics
• Series: HMV-02
• Model: HMV105-02
• Product type: Variable displacement axial piston motor
• Application: Closed- and open-loop operation
• Maximum displacement: 105 cm³/rev
• Minimum displacement: 35 cm³/rev
• Maximum continuous speed at Vmax: 3,500 rpm
• Maximum intermittent speed at Vmax: 3,800 rpm
• Maximum continuous speed at Vmin: 4,100 rpm
• Maximum intermittent speed at Vmin: 4,700 rpm
• Nominal pressure: 450 bar
• Maximum intermittent pressure: 500 bar
• Permissible housing pressure: 2.5 bar
• Continuous theoretical output torque: 418 Nm
• Maximum theoretical output torque: 702 Nm
• Continuous theoretical power: 153 kW
• Maximum theoretical power: 257 kW
• Variable-motor weight: 42 kg
• Maximum moment of inertia: 1.44 × 10⁻² kg·m²
• Axial shaft load: 2,000 N
• Radial shaft load: on request.

Identifier Note

Linde’s own nameplate example explicitly maps type number 234 to HMV105-02. Therefore H2X234C04168 follows the documented HMV105-02 serial structure; the C field is the production-year code position and 04168 is the serial-number position.

Key Technical Advantages

1. 21° Swash-Plate Architecture

Linde Series 02 units use a 21° swash-plate design with hydrostatic bearing support and an integrated control piston. This architecture provides the displacement control required for high-pressure hydrostatic transmission.

2. High Power Density

The HPV135-02 provides 135.7 cm³/rev maximum displacement with a 3,000 rpm continuous operating-speed rating and a 450/500 bar nominal/intermittent pressure class. Its published corner power is 305 kW.

3. Smooth Low-Speed Motor Operation

Linde specifically describes HMV-02 motors as providing smooth low-speed operation and high starting torque. The Series 02 transmission concept is intended to reduce drivetrain components by allowing more direct conversion between engine speed and wheel speed.

4. Rigid and Integrated Construction

The design incorporates:

• Hydrostatic swash-plate bearing
• One-piece/monoshell housing concept
• Integrated control piston
• Highly integrated valve-plate housing
• Precision rotary group

These features are intended to support stability, dynamic response and long service life under demanding hydraulic conditions.

5. SAE Mounting and Spline Interfaces

The Series 02 motor platform uses SAE J744 mounting interfaces and ANSI B92.1 spline systems, with different frame sizes supporting different mounting and shaft combinations. Complete ordering-code verification is therefore essential for replacement applications.

6. Broad Control Architecture

HPV-02 pumps can be configured with mechanical, hydraulic, electro-proportional and special pressure-cut-off controls. HMV-02 motors can be fitted with hydraulic or electro-hydraulic variable and two-position controls, as well as pressure-override configurations.

7. Engineering-Based Replacement Testing

Our replacement process emphasizes:

full code matching + installation-interface verification + rotation verification + control verification + 100% simulated working-condition testing

rather than nominal displacement matching alone.

Application Areas

HPV135-02

Typical applications include:

• Heavy-duty construction machinery
• Hydrostatic travel drives
• Large mobile equipment
• Industrial vehicle drives
• High-power closed-loop transmissions
• Winch and traction systems
• Legacy Linde hydraulic systems

The HPV-02 platform is explicitly designed for closed-loop hydrostatic applications.

HMV75-02 / HMV105-02

Typical applications include:

• Mobile machinery
• Wheel-driven equipment
• Hydrostatic travel systems
• Rotary drives
• Low-speed/high-torque applications
• Industrial hydraulic drives
• Direct-drive transmission systems

HMV-02 documentation explicitly supports both closed- and open-loop applications.

Expert Maintenance Tips

Verify the Complete HPV Control Code

HPV135-02 is not a complete configuration. Controller type, pressure-cut-off features, mounting, shaft, relief-valve configuration, filter arrangement and PTO options can all affect interchangeability.

Confirm HMV Vmax / Vmin Configuration

HMV75 and HMV105 are variable motors, not fixed-displacement motors:

• HMV75: 75.9 → 25.3 cm³/rev
• HMV105: 105 → 35 cm³/rev.

Do Not Treat 500 bar as Continuous Pressure

For these Series 02 units:

450 bar = nominal pressure

500 bar = maximum/intermittent pressure

The maximum value is not a continuous operating target.

Control Housing Pressure

The published permissible housing pressure is 2.5 bar. Drain and return-line design should therefore prevent excessive case back pressure.

Maintain Hydraulic Cleanliness

Linde specifies:

18/16/13 ISO 4406 or better as the beneficial cleanliness target and 20/18/15 as the minimum requirement in the cited Series 02 motor documentation.

Maintain Suitable Viscosity

The documented working-viscosity range is 10–80 cSt, with 15–30 cSt identified as the optimum working range. Hydraulic fluid temperature should remain within the documented range, with system temperature not exceeding 90°C under the stated conditions.

Inspect Optional Motor Functions During Replacement

For HMV units, verify any installed:

• Purge valve
• Case flushing circuit
• Crossline relief valves
• Speed sensor
• Counterbalance valve
• Through-drive/PTO
• Electric override

These options can change the physical installation and hydraulic control circuit.