HPV105-02

Representation of the hydraulic components of a closed loop hydrostatic drive: Variable electro-hydraulic controlled pump HPV-02 E1 (top view) and fixed displacement motor HMF-02 plus filter, cooler and oil tank. The function diagram and the circuit diagram show two types of cooling.

Function diagram

Circuit diagram

The boost pump is shown with internal and external suction.

Standard Linde name plate

Each Linde Hydraulics unit features a name plate showing the type and the serial number. For a single order via 'open variant' a customer-specific number or free text with up to 15 characters can be stamped on the name plate.

The table shows the complete capacity range of the pumps, while the diagram below shows the recommended practical range for the different nominal sizes of the HPV-02 pump with control limit between 200 bar Δpmin and 280 bar Δpmax. It enables initial selection of the required nominal pump size.

Overview of technical data

Recommended operating range of HPV-02

Linde high pressure units are designed for excellent reliability and long service life. The actual service life of a hydraulic unit is determined by numerous factors. It can be extended significantly through proper maintenance of the hydraulic system and by using high-quality hydraulic fluid.

Operational parameters. Filtration

In order to guarantee long-term proper function and high efficiency of the hydraulic pumps the purity of the pressure fluid must comply with the following criteria according to Linde Works Standard WN 51 210. High purity oil can extend the service time of the hydraulic system significantly.

Filters

Units of the HPV-02 series can be equipped with a pure charge pressure manifold or with a combined charge pressure and filter flange manifold. The following filter sizes are available, depending on the rated size of the unit. Further details about the mounting of the charge pressure manifold see section "Dimensions. Modular System".

In order to ensure the functional performance and high efficiency of the hydraulic pumps the viscosity and purity of the operating fluid should meet the different operational requirements. Linde recommends using only hydraulic fluids which are confirmed by the manufacturer as suitable for use in high pressure hydraulic installations or approved by the original equipment manufacturer.

Linde offers an oil testing service in accordance with VDMA 24 570 and the test apparatus required for in-house testing. Prices available on request.

Recommend viscosity ranges

In order to be able to select the right hydraulic fluid it is necessary to know the working temperature in the hydraulic circuit. The hydraulic fluid should be selected such that is optimum viscosity is within the working temperature range (see tables).

The temperature should not exceed 90 °C in any part of the system. Due to pressure and speed influences the leakage fluid temperature is always higher than the circuit temperature. Please contact Linde if the stated conditions cannot be met in special circumstances.

Viscosity recommendations

Mounting orientation

The preferred mounting orientation is generally horizontal. Special pump configurations for vertical mounting with the drive shaft pointing either upward or downward are available for selected rated sizes and have to be requested separately.
For further information concerning the installation of the unit please refer to the operating instructions manual.

Depending on the selected components, different torques may be transferred. Please ensure that the load transfer components such as mounting flange, PTO-through shaft and additional pumps are designed adequately. Our sales engineers will be pleased to provide design advice.

Torque transmission of HPV-02

This shows the input side (A) und PTO-/output side (B) of a HPV-02 pump. The information on the following pages refers to

A) Flange profile

Bolt hole diameter / Bolt hole length

2-hole flange / 4-hole flange

2-hole flange with 4 additional threaded holes 2-hole flange with 4 additional bolt holes

A) Dimensions ANSI and SAE drive shafts

*) Recommended for tandem configurations

A) Maximum input torque

A) Linde Hydraulics shaft types

Type 1. Without undercut / Type 2. With undercut

Linde pumps can be combined into tandem and multiple pumps. The combination options are determined by the permitted transfer torque. The following data refers to the PTO (pump output side, without further attachments).

B) PTO dimensions

B) Output shaft transfer torque

Torque transmission. Output shaft

B) PTO dimensions

Two types of gear pumps are available: internal gear pump IGP and external gear pump EGP. The possible combinations of and with IGP and EGP are determined by the PTO option and the permitted shaft torque. Both types can be used as charge pump for the main circuit or the control and cooling circuit. The allowable pressure at the suction port is between 0.8 bar (abs.) and 3.0 bar (abs.). The charge pressure relief valves for the rated sizes 55-135 are integrated in the port plate housing, and for the rated sizes 165-280 in the charge pressure manifold of the HPV-02.

Technical data

PTO flange with IGP

PTO SAE A with IGP / PTO SAE B, B-B and C with IGP

The modular control concept with standardised interface enables quick selection and adaptation for different customer and system requirements with mechanical, hydraulic or electronic control. All Series 02-controls feature an upstream signal circuit that is adapted to the respective control, and a standardised and load-independent servo control for simple and constantly available machine or vehicle control.

Technical data

E1/E5-control / E1P-control / E2-control

H1-control / H1P-control / CA-control

M1R-control / HPV-02 E2

All Series 02-pump controls result in the same machine response for identical motion commands, irrespective of the control type. Corrective action by the operator is no longer required. The reliable control of the pump can easily be integrated into any kind of vehicle management control system.

Control accuracy of a HPV-02 pump / E2-control

Pressure cut-off regulation PCO

Special control elements deal with functions such as torque control or pressure cut-off regulation. Controls with pressure cut-off regulation (PCO) reduce pump flow when the cut-off pressure is reached. Because system pressure is maintained at low flow, the power consumption and thermal balance of the system are optimised.

Displacement relative to pilot pressure and pressure cut-off regulation for H- and E-controls

The M1R-pump control combines robustness with high precision for direct and reliable machine control. It is mechanically controlled and can be combined with a fixed, variable or regulating hydraulic motor. The control-specific data is independent of the nominal pump size.

M1R Mechanical control

Flow direction

By turning the control lever the pump flow rate and direction of flow are controlled via a cam plate. The flow direction of the fluid depends on

High pressure outlet port

P, S High pressure ports
A Pressure port, charge pump
B Suction port, charge pump
F Feed port, charge and control
X Test port, control pressure
Ms, Mp Test ports, high pressure
L, U Drain ports
L1, L2 Vent ports

Note for left hand rotation

A Suction port, charge pump
B Pressure port, charge pump

The cam plate offers a large control angle with progressive control characteristic and a wide neutral range. The resulting high resolution for movements from the neutral range (and vice versa) enables precise manoeuvring. Reliable and robust control of the displacement volume is achieved through position feedback.

Displacement relative to control angle

Control force with max. long lever radius r= 70 mm 17 N
Max. permissible control force (intermittent) 500 N
Control torque < 1.0 Nm
Control torque out of notch < 1.5 Nm
Neutral position 24°, 90° (standard), 133°, 144°, 188°, 210°, 232°
Control angle neutral range ... to end position ±3° ... ±48°
Minimum response time with standard restrictors 0.5 s

M1R-cam plate / Control range

The HPV-02 H1 features hydraulic control with a wide pilot pressure range for improved machine control. It can be combined with a fixed, variable or regulating hydraulic motor. The data is specific for hydraulic controls, and independent of the nominal pump size and pressure cut-off regulation PCO, unless specified otherwise otherwise (see section Controls. Control accuracy).

H1. Hydraulic control

Flow direction

By an external hydraulic signal input at the pilot pressure ports (Y, Z) the pump flow rate and direction of flow are controlled. The flow direction of the fluid depends on the pump direction of rotation and the over centre direction of the swash plate.

High pressure outlet port

H1P. Hydraulic control with PCO

P, S High pressure ports
A Pressure port, charge pump
B Suction port, charge pump
F Feed port, charge and control
X Test port, pilot pressure
Ms, Mp Test ports, high pressure
L, U Drain ports
T Vent port
Y, Z Pilot pressure ports

Note for left hand rotation

A Suction port, charge pump
B Pressure port, charge pump

Pilot pressure range standard: 4-16 bar, option: 4-10 bar differential pressure |Y-Z|
Maximum permissible pressure at Y or Z 30 bar
Minimum response time with standard orifices
for one-way swashing between 0 and max 0.5 s

Displacement relative to pilot pressure

H1P-control with PCO

The HPV-02 CA is a speed-dependent pump control with torque/power regulation. It can be combined with a hydraulic motor as fixed, variable or regulating motor or a variable motor with pressure regulator. The modular design offers a high degree of versatility in terms of function and control.

CA. Hydraulic-mechanical control

Drive with speed-dependent variable pump and variable motor with pressure override

The HPV-02 E1 has two proportional solenoids and through the upstream signal circuit it combines the flexibility of electronic vehicle management with the reliability of a pump control marked by its high operational availability. Precise and simple. Identical commands always call for the same response in the machine, so no corrective action is required by the operator or the electronic system. The HPV-02 E5 has two switching solenoids and thus sets the pump to either neutral or maximum swash angle of any direction.

E1. Electro-hydraulic control

E1P. Electro-hydraulic control with PCO

E5. Electro-hydraulic 3 position control

P, S High pressure ports
A Pressure port, charge pump
B Suction port, charge pump
F Feed port, charge and control
X Test port, pilot pressure
Ms, Mp Test ports, high pressure
L, U Drain ports
T Vent ports
Note for left hand rotation
A Suction port, charge pump
B Pressure port, charge pump

The HPV-02 E2, with its additional release function, can easily be integrated in an electronic vehicle management control system like an E1-control. In addition it offers a safety standard that meets the stringent requirements for road traffic use. The E2-control features two proportional solenoids and a switching solenoid.

E2. Electro-hydraulic control

E2 with switch-off function

The E2 control offers an interface for switching off the whole system. In case of signal irregularity or perturbation like cable break or short-circuit in the switching solenoid circuit (co called 'watchdog'), the pump swashes back to neutral position in a defined manner.
The vehicle is decelerated until standstill and thus provides a safe condition of the machine as per EN ISO 13849.

In case of disfunction in the proportional magnets' circuits, a similar reaction can be induced by the intervention of the electronic control units.
It use is recommended for mobile applications where specific safety criteria have to be met in terms of travel coasting behaviour, e.g road traffic use.

Product advantages of E2

P,S High pressure ports
A Pressure port, charge pump
B Suction port, charge pump
F Feed port, charge and control
X Test port, control pressure
Ms,Mp Test ports, high pressure
Y,Z Test ports, control pressure
L,U Drain ports
T Vent port

Note for left hand rotation

A Suction port, charge pump
B Pressure port, charge pump

E1 control / E1P control

E5 control / E2 control

Flow direction

By an external electrical signal input at the solenoids (MY and MZ) the pump flow rate and direction of flow are controlled. The flow direction of the fluid depends on

High pressure outlet port

The data is specific for electrical controls, and independent of the nominal pump size and PCO pressure cut-off regulation, unless specified otherwise (see section Controls. Control accuracy). Figures HPV-02 E1 and HPV-02 E2 (page 22, 23) show the standard mounting position for the respective E-control.

Control signal characteristics

*) Coding 1 with proportional solenoids (E1, E1P), coding 2 with switching solenoids (E2, E5)

Displacement relative to control current

Control-specific dimensions for HPV-02 with mechanical-hydraulic controls.

Port sizes and dimensions for M-controls

Threads metric in accordance with ISO 6149-1
Suction port at IGP in accordance with ISO 8434-1 L28
High pressure ports similar to ISO 6162-2
Socket cap screw in accordance with ISO 4762
Further threads on request

Control-specific dimensions for HPV-02 with hydraulic controls.

Port sizes and dimensions for H-controls

Threads metric in accordance with ISO 6149-1
Suction port at IGP in accordance with ISO 8434-1 L28
High pressure ports similar to ISO 6162-2
Socket cap screw in accordance with ISO 4762
Further threads on request

Control-specific dimensions for HPV-02 with hydraulic-mechanical controls.

Port sizes and dimensions for CA-controls

Threads metric in accordance with DIN 3852-1
Suction port at IGP in accordance with ISO 8434-1 L28
High pressure ports similar to ISO 6162-2
Socket cap screw in accordance with ISO 4762
Further threads on request

Control-specific dimensions for HPV-02 with electro-hydraulic controls.

Port sizes and dimensions for E-controls

Threads metric in accordance with ISO 6149-1
Suction port at IGP in accordance with ISO 8434-1 L28
High pressure ports similar to ISO 6162-2
Socket cap screw in accordance with ISO 4762
Further threads on request

The following diagrams show the proportions of similar components.

The following diagrams show the proportions of similar components.

The following data enable quick calculation of the overall maximum external dimensions. In each case only the relevant dimensions are shown so that length, width and height can simply be determined through addition. The actual fitting dimensions of the respective units are shown on the installation drawing.

External dimensions for addition

Example:
HPV 135-02 H1 with IGP 22.5, filter no. 3 and companion flange
L. 440 mm B. 390 mm H. 275 mm

Tandem pumps are created by connecting individual HPV units in series, with the pumps arranged by capacity. Positioning the charge pump(s) at the end of the tandem ensures optimum space utilisation, output allocation and load distribution.

Overall length of tandem pump

Multiple pumps are created by combining individual pump units in series, with the pumps arranged by capacity. Positioning the gear pump(s) at the end of the unit ensures optimum space utilization, output allocation and load distribution. The following table is based on the gear pump acting as charge pump for the HPV-02 variable pump.

Overall length of multiple pump

The HPV-02 is based on a modular system with the following characteristics. This enables our distribution partners to configure the product according to your requirements. The latest characteristics and available options can be taken form the model code, which is available on our homepage.

• Size
• Vmax
• Mounting flange
• Companion flange
• Drive shaft
• Direction of rotation
• PTO direct mounting
• Tandem pump
• Internal gear pump
• External gear pump
• Suction internal gear pump
• Direction of GP suction
• PTO mounting on IGP
• Port threads
• Control
• Pilot pressure range for H-/E-control
• Control lever geometry
• Position of control lever
• Voltage for E-controls
• Cut-off for E-controls
• Connectors for E-controls
• Arrangement of solenoids
• High pressure and charge pressure relief valve
• Cold start relief valve
• Drain port U + L
• Filter/charge pressure manifold
• Filter flange mounting
• Surface treatment
• Name plate
• Swash angle sensor