VARIABLE DISPLACEMENT AXIAL PISTON PUMPS - OPEN CIRCUIT

HSP series

The HSP series by Hydraut is an axial piston pump with variable displacement and is designed for open-circuit systems. With a swash-plate design (swash-plate) and thanks to the robust construction, the pumps of the HSP series are capable of withstanding even significant loads.

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Details

Available displacements: from 18cc to 140cc
Axial piston swash-plate design
Open circuit
Nominal pressure: 280 bar
Maximum pressure: 350 bar
Rear or lateral SAE inlet and outlet ports
Available regulators: Pressure/flow/power DFLR and ERHZ-EQZ proportional pressure control

Benefits

Reduced noise and heat thanks to the integrated venting function in the HC/HO on-off electric control
Load-independent flow control via the EQZ proportional regulator
Modular design with single and thru-drive configurations for coupling multiple pumps on a single power take-off
Wide range of mechanical and electrohydraulic compensators to suit any control scheme
High volumetric efficiency guaranteed by the 9-piston swash-plate design: low flow pulsation and reliability even in the most demanding applications

Application fields

Hydraulic power units
Hydraulic and metal forming presses
Waterjet machines
Machine tools
Broaching machines
Plastic moulding and processing machines
Test benches
Oilfield equipment
Mining and drilling machines
Forestry and agricultural machinery
Construction machinery

Technical data sheet

Technical data sheet hsp SERIEs HYDRAUT

Code

Displacement (cm3)

Speed nom max (rpm)

P nom (bar)

P max peak (bar)

HSP-18

3300

280

350

HSP-28

3000

280

350

HSP-45

2600

280

350

HSP-71

2200

280

350

HSP-100

100

2000

280

350

HSP-140

140

1800

280

350

Code HSP-18

Displacement (cm3) 18

Speed nom max (rpm) 3300

P nom (bar) 280

P max peak (bar) 350

Code HSP-28

Displacement (cm3) 28

Speed nom max (rpm) 3000

P nom (bar) 280

P max peak (bar) 350

Code HSP-45

Displacement (cm3) 45

Speed nom max (rpm) 2600

P nom (bar) 280

P max peak (bar) 350

Code HSP-71

Displacement (cm3) 71

Speed nom max (rpm) 2200

P nom (bar) 280

P max peak (bar) 350

Code HSP-100

Displacement (cm3) 100

Speed nom max (rpm) 2000

P nom (bar) 280

P max peak (bar) 350

Code HSP-140

Displacement (cm3) 140

Speed nom max (rpm) 1800

P nom (bar) 280

P max peak (bar) 350

Rexroth cross-reference

Hydraut HSP: the interchangeable alternative to Rexroth A10VSO pumps

The Hydraut HSP is a variable displacement axial piston pump with swashplate design for open circuits, in the same six sizes as the Rexroth A10VSO: 18, 28, 45, 71, 100 and 140 cc. Same flanges, same shafts, same ports: it replaces the A10VSO without modifications to the machine. It is our own brand, assembled and 100% tested in Italy.

Series cross-reference

Rexroth series	Hydraut series	Displacement	Pressure nom. / peak	Max speed (rpm)
A10VSO 18	HSP-18	18 cc	280 / 350 bar	3,300
A10VSO 28	HSP-28	28 cc	280 / 350 bar	3,000
A10VSO 45	HSP-45	45 cc	280 / 350 bar	2,600
A10VSO 71	HSP-71	71 cc	280 / 350 bar	2,200
A10VSO 100	HSP-100	100 cc	280 / 350 bar	2,000
A10VSO 140	HSP-140	140 cc	280 / 350 bar	1,800

Why choose it instead of the original

Hydraut brand, the most competitive price: a 9-piston design for low flow pulsation, single or thru-drive configurations.
24-month warranty and every unit tested on our test bench in Gallarate (Italy) before shipment.
Delivery: 24–48 hours for stock items, 2 weeks standard.
Technical support: our engineers convert your current code and check the installation with you.

What we check before confirming the replacement

Size and direction of rotation
Controller: pressure, pressure/flow (DFR), power (DFLR), electro-proportional
Shaft (keyed or splined) and mounting flange
Port position (rear or side) and thru-drive

Send us your Rexroth code

We return the equivalent code, checked by our technical team, with price and delivery time.

Get the equivalent code

Frequently asked questions

Which pump replaces a Rexroth A10VSO?

The Hydraut HSP, in the same sizes from 18 to 140 cc, with 280 bar nominal and 350 bar peak pressure.

Do I need to modify the machine?

No. The HSP has the same flanges, shafts and ports as the A10VSO, so it is a direct replacement.

Which controllers are available?

Pressure, pressure/flow, pressure/flow/power (DFLR) and electro-proportional controls, with the HC/HO on-off electric venting function. We match the controller to your current code.

How do I get the equivalent code?

Send us the full A10VSO code from the nameplate: we return the equivalent HSP code with size, controller, shaft and ports checked.

Rexroth, Voith and the series names mentioned are trademarks of their respective owners and are used only to indicate compatibility. Hydraut Europe S.r.l. is not affiliated with these companies. Interchangeability is confirmed code by code by our technical team.

HSP series

Details

Benefits

Application fields

Technical data sheet hsp SERIEs HYDRAUT

*The new catalogue is coming soon! This series shares the same dimensional and performance specifications as the Hytek HA10V(S)O series — the reference datasheet is available for download on the dedicated page. For any enquiry, contact our sales team: info@hydraut.com

Hydraut HSP: the interchangeable alternative to Rexroth A10VSO pumps

Series cross-reference

Why choose it instead of the original

What we check before confirming the replacement

Frequently asked questions

Which pump replaces a Rexroth A10VSO?

Do I need to modify the machine?

Which controllers are available?

How do I get the equivalent code?

Request a quote