Hydraulic Piston Pumps for High-Pressure Industrial and Mobile Systems
Techknow Engineering Enterprise is a hydraulic piston pump supplier for plants, OEMs and maintenance teams across India. We supply axial piston pumps and radial piston pumps in fixed and variable displacement designs, matched to the pressure, flow, control and mounting your circuit needs.
A hydraulic piston pump is the usual choice when a circuit runs at high pressure for long periods, needs variable flow, or must save energy at part load. We are an Authorized HYDAC Distributor and a Rexroth piston pump supplier, and we also supply piston pumps from Parker, Yuken, Eaton-Vickers and other brands.
Whether you are replacing a worn pump on a running press or specifying the pump for a new power pack, our team checks the nameplate, duty and circuit before recommending a pump.
How a Hydraulic Piston Pump Works
Positive-displacement pumping with pistons in precision-machined bores.
In a piston pump, several pistons move back and forth inside a rotating or stationary cylinder block. Each piston draws oil in on its suction stroke and pushes it out on the delivery stroke, so the pump delivers a fixed volume per revolution for a given stroke. Close clearances give high volumetric efficiency, which is why piston pumps hold their performance at pressures where gear and vane pumps lose efficiency.
Axial vs Radial Piston Designs
Axial piston pumps
Pistons run parallel to the drive shaft. Stroke is set by a swash plate or by the angle of a bent-axis cylinder block. Changing that angle changes displacement, which makes axial designs the basis of most variable displacement pumps. View axial piston pumps.
Radial piston pumps
Pistons are arranged radially around an eccentric on the shaft. These valve-controlled, fixed displacement pumps deliver small flows at very high pressure — up to 700 bar, and 1000 bar in special variants. View radial piston pumps.
Fixed and Variable Displacement Options
Choose the displacement and control that matches how your machine uses flow.
Fixed Displacement Piston Pumps
A fixed pump delivers the same volume every revolution, so flow changes only with drive speed. Axial piston fixed displacement pumps reach up to 400 bar with 27–950 lpm, depending on version, and suit open circuits with steady demand.
Variable Displacement Piston Pumps
A variable pump changes its stroke to match demand. Axial piston variable displacement pumps reach up to 500 bar with 32–1000 lpm, depending on version, and work in open and closed circuits. Controls include un-load, variable pressure, load-sensing and pressure-constant. More on variable displacement pumps.
Rexroth Piston Pump Supplier for Replacement and New Projects
Like-for-like replacements keep mounting, shaft, ports and controls unchanged.
Rexroth piston pumps are fitted on a large share of presses, injection moulding machines, machine tools and mobile equipment in India. As a Rexroth piston pump supplier, we help you replace a failed unit with the same type code, or identify a suitable alternative when a model is obsolete.
What We Need to Quote a Rexroth Piston Pump
- Complete type code from the pump nameplate
- Serial number and machine make, if available
- Photo of the nameplate and the control (compensator) block
- Required pressure and flow, if the nameplate is unreadable
- Mounting flange, shaft and direction of rotation
- Whether you need the pump only or with matching spares
Rexroth piston pump series we regularly supply: [TECHKNOW TO CONFIRM: series you stock or source, e.g. A10VSO / A4VSO / A2FO].
Piston Pump Ranges at a Glance
Typical ranges for the piston pumps we supply. Exact values depend on the series and version selected.
Axial Piston – Fixed
Fixed displacement axial piston pumps for open circuits, up to 400 bar and 27–950 lpm depending on version.
Axial Piston – Variable
Variable displacement axial piston pumps for open and closed circuits, up to 500 bar and 32–1000 lpm depending on version.
Radial Piston
Valve-controlled radial piston pumps up to 700 bar, with 1000 bar possible in special variants.
Speed Range
Radial piston versions operate from 500 to 3600 rpm; axial piston speed limits depend on size and inlet conditions.
Control Options
Un-load, variable pressure, load-sensing and pressure-constant controls regulate flow and pressure to the load.
Circuit Types
Fixed pumps suit open circuits; variable axial piston pumps can be used in open and closed (hydrostatic) circuits.
Where Hydraulic Piston Pumps Are Used
Techknow is a hydraulic piston pump supplier for high-pressure presses, rolling mills, plastic machinery and process equipment across Indian industry.
Rolling, Pressing & Casting
Turbine Control & Emergency Backup
Turbine Governing & Dam Gates
Pitch Control & Braking Systems
Excavators, Cranes & Earthmovers
Press Shop, Body Shop & Assembly
Steering & Deck Machinery
Pulp Processing & Paper Production
Crushers, Kilns & Material Handling
Injection & Blow Moulding
Pressure Stabilization & Shutdown
Valve Actuation & Pressure Control
Selecting and Protecting a Hydraulic Piston Pump
Piston pumps are precise machines — correct selection and clean oil decide their service life.
Piston pumps tolerate high pressure well but are less forgiving of contaminated oil, poor suction conditions and incorrect start-up than gear pumps. A few checks at selection and commissioning prevent most early failures, and as your hydraulic piston pump supplier we can review them with you before ordering.
Selection Points and Start-Up Checks
Before you order
- Working and peak pressure, and the duty cycle at each
- Flow required, or displacement and drive speed
- Open or closed circuit
- Control type: pressure compensator, load-sensing, power or electro-proportional
- Fluid type, viscosity range and oil temperature
At commissioning
- Fill the pump case with clean oil before the first start
- Route the case drain line directly to tank, without restriction
- Keep inlet pressure within the manufacturer's limit
- Fit and maintain suitable suction and return line filters
- Watch for rising case drain flow, heat or noise as early signs of wear
Piston Pump Brands
We Supply Across India
Authorized HYDAC distributor and multi-brand pump supplier for Indian industry
Authorized HYDAC Distributor and Multi-Brand Piston Pump Supplier
Techknow Engineering is an Authorized Distributor for HYDAC in India. Alongside HYDAC, we are a hydraulic piston pump supplier for Rexroth, Parker, Yuken, Eaton-Vickers, Dowty, Polyhydron and Beiri Hawe, so you can source the pump, filters and accessories for one system from one supplier.
Related Hydraulic Pump Types
Compare piston pumps with the other pump types we supply.
Axial Piston Pumps
Swash-plate and bent-axis pumps for medium to high pressure and variable flow.
Radial Piston Pumps
Compact, valve-controlled pumps for very high pressure at small flow.
Variable Displacement Pumps
Pumps that adjust their output to the load to save energy and reduce heat.
Hydraulic Gear Pumps
Simple, cost-effective pumps for fixed-flow circuits up to 280–350 bar.
Hydraulic Vane Pumps
Quiet, low-pulsation pumps for low to medium pressure systems.
Hydraulic Pumps Range
See every pump type, brand and the details needed for a quotation.
FAQ'S
A hydraulic piston pump is a positive-displacement pump in which pistons moving in cylinder bores draw in and deliver oil. It is used where high pressure, high efficiency or variable flow is required.
In an axial piston pump the pistons run parallel to the shaft and stroke is set by a swash plate or bent axis, which allows variable displacement. In a radial piston pump the pistons are arranged around an eccentric shaft; these are fixed displacement pumps for very high pressure at small flow.
Yes. We are a Rexroth piston pump supplier for replacement and new projects. Send the complete type code from the nameplate and we will confirm the matching pump or a suitable alternative if the model is obsolete.
Depending on the series, axial piston fixed pumps go up to 400 bar, axial piston variable pumps up to 500 bar, and radial piston pumps up to 700 bar, with 1000 bar in special variants.
The most common causes are contaminated oil, poor suction conditions, a restricted case drain line, and starting the pump without filling the case with oil. Correct filtration and commissioning prevent most early failures.
Share the pump nameplate details or your pressure, flow, control and mounting requirements through our contact page. Our team will confirm a suitable pump and send a quotation.
Looking for a Hydraulic Piston Pump Supplier?
Send us your nameplate photo, type code or duty requirements and our team will recommend a suitable axial or radial piston pump with a quotation.
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