Radial Piston Pumps for High Pressure at Small Flow
Techknow Engineering Enterprise is a radial piston pump supplier in India for machine builders, maintenance teams and test-equipment makers. A radial piston pump is the pump of choice when a circuit needs very high pressure with a relatively small, precise flow — clamping, pressing, tool holding and pressure testing.
The radial piston pump range we supply is fixed displacement and valve controlled, delivering pressures up to 700 bar and up to 1000 bar in special variants, with displacements from 0.12 to 8.14 cm³/rev depending on the version series. We are an Authorized HYDAC Distributor and also supply pumps from Rexroth, Parker, Polyhydron and other brands.
Send us the nameplate of the pump you are replacing, or the pressure and flow your circuit needs, and our team will confirm a suitable pump.
How a Radial Piston Pump Works
Pistons arranged like spokes around an eccentric shaft.
In a radial piston pump, the pistons are arranged radially around the drive shaft. An eccentric on the shaft pushes each piston outward in turn on its delivery stroke, and a spring returns it on the suction stroke. Inlet and outlet check valves on each piston control the flow, which is why the pump is described as valve controlled. Because the valves rather than a port plate separate suction from delivery, the pump works independently of the direction of rotation.
Why Choose a Radial Piston Pump
- High volumetric and mechanical efficiency
- Very high pressure from a compact unit
- Accurate, fine gradation of delivery flow
- Operation independent of the direction of rotation
- Extended service life and durability
- Low flow pulsation at high pressure when multiple pistons are used
- Can be combined with a low-pressure pump for high-low circuits, depending on design
Where you need high pressure and larger flows or variable displacement, compare axial piston pumps.
Technical Specifications
Typical values depending on the version series. Exact data is confirmed for the selected model.
Operating Pressure
Working pressure up to 700 bar, with 1000 bar possible in special variants.
Displacement
Displacement from 0.12 to 8.14 cm³/rev for small, precise flows.
Speed Range
Operates from 500 rpm to 3600 rpm.
Design
Fixed displacement with inlet and outlet check valves on each piston.
Rotation
Operation is independent of the direction of rotation.
Performance
High volumetric and mechanical efficiency with extended service life.
Where a Radial Piston Pump Fits Best
High pressure, small flow and long holding times.
A radial piston pump suits circuits that build pressure quickly and then hold it, or that need a small flow at a pressure other pumps cannot reach efficiently.
Typical Applications
- Machine tools — clamping, chucking and tool holding
- Hydraulic presses and press tools
- Test benches and pressure testing equipment
- Heavy-duty hydraulic machinery and tensioning systems
- Lubrication and high-pressure auxiliary circuits
- High-low pump combinations with a gear or vane pump for rapid traverse
Pair the pump with suitable pressure line filters and, for pressure holding, a hydraulic accumulator.
Industries Using Radial Piston Pumps
Installations range from machine tools and presses to steel, power and process plants.
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
Choosing a Radial Piston Pump
Share these details for a correct recommendation or like-for-like replacement.
As a radial piston pump supplier in India, we select the pump around your pressure, flow and duty rather than catalogue size alone. Pressure, displacement and speed determine the delivered flow, so all three are needed.
Details We Need
Duty
- Maximum working pressure and holding time
- Required flow, or displacement and drive speed
- Number of outlets, if separate circuits are fed
- Oil type and operating temperature
Replacement
- Nameplate model code of the existing pump
- Mounting: oil-immersed (in-tank) or external
- Shaft type and any through-drive or combined pump
- Port sizes and positions
Pump Brands
We Supply Across India
Authorized HYDAC distributor and multi-brand pump supplier for Indian industry
Authorized HYDAC Distributor and Radial Piston Pump Supplier in India
Techknow Engineering is an Authorized Distributor for HYDAC in India. We also supply hydraulic pumps from Rexroth, Parker, Yuken, Eaton-Vickers, Dowty, Polyhydron and Beiri Hawe, so you can source the radial piston pump, filters and accessories for your system from one supplier.
Related Hydraulic Pump Types
Compare radial piston pumps with the other pump types we supply.
Hydraulic Piston Pumps
Overview of axial and radial piston pumps, including Rexroth piston pumps.
Axial Piston Pumps
Swash-plate and bent-axis pumps for high pressure with larger or variable flow.
Variable Displacement Pumps
Pumps that adjust their output to the load to save energy.
Hydraulic Gear Pumps
Robust pumps often combined with radial piston pumps in high-low circuits.
Hydraulic Vane Pumps
Quiet, low-pulsation pumps for low to medium pressure.
Hydraulic Pumps Range
Every pump type and brand we supply in one place.
FAQ'S
A radial piston pump is a positive-displacement pump with pistons arranged radially around an eccentric shaft. Check valves control suction and delivery, and it is used for very high pressure at small flow.
The radial piston pump range we supply works up to 700 bar, with 1000 bar possible in special variants, depending on the version series.
The radial piston pumps we supply are fixed displacement, valve-controlled pumps. Flow depends on displacement and drive speed. For variable flow, see our variable displacement pumps.
Yes. Because suction and delivery are controlled by valves, operation is independent of the direction of rotation.
Yes. As a radial piston pump supplier in India, we can match an existing pump from its nameplate model code, mounting and shaft details, or suggest a suitable alternative if the model is obsolete.
Typical uses are machine tool clamping, hydraulic presses, test benches, tensioning systems and other circuits that need high pressure with small flow.
Looking for a Radial Piston Pump Supplier in India?
Send us your nameplate photo, model code or pressure and flow requirement and our team will recommend a suitable radial piston pump with a quotation.
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