Hydraulic components are used wherever forces need to be transmitted precisely and movements controlled accurately, e.g., in construction machinery, agricultural machinery, industrial presses, machine tools, or in energy technology. Maximum dimensional accuracy, defined surfaces, and minimal leakage are crucial for their function.

From drive and output shafts to pistons, pumps, swivel cradles, valves, and cylinders, all components are required in a wide variety of designs and quantities.

Supfina offers solutions for fine grinding and superfinishing that sustainably improve efficiency, service life, and process reliability.

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+1 401-294-6600 · info-na@supfina.com

Your benefits at a glance

Supfina's technologies for machining hydraulic components achieve ...

Whether cylinders, pistons, valve components, or pump parts—Supfina delivers the right solution for your application.

Superfinish surfaces reduce friction and stick-slip effects, thereby contributing significantly to improving the efficiency and service life of hydraulic components. The high load-bearing capacity of the surface minimizes wear, stabilizes the lubricating film, and ensures maximum tightness, even under high pressures and dynamic loads.

Supfina superfinishing machines are used for a wide range of hydraulic components and enable reproducible results in small and large series production.

Typical components for superfinishing

• Hydraulic cylinders and cylinder tubes
  For smooth running surfaces and long seal service life
• Pistons and piston rods
  For reduced friction and stable movement
• Valve components such as slides, seats, and valve bodies
  For precise control and minimal leakage
• Pump and motor components
  For improved efficiency and reduced wear
• Sealing and sliding surfaces
  For functional and operational reliability

Double-sided parallel precision grinding is specially designed for the precise machining of flat workpieces. The components are placed in runner discs and guided between two rotating grinding wheels in an orbiting motion, achieving maximum parallelism.

The Supfina Spiro series of fine grinding machines offer maximum flexibility and ensure consistently precise surfaces. Optional integrated automation systems enable fully automatic loading and unloading, increase productivity, and reliably secure the process

Typical flat components for fine grinding

• Pump and motor housings
  Flat base plates or covers for pumps and motors
• Guide and sealing plates
  For hydraulic cylinders, valves, or pumps
• Slider and seat plates
  For precise control and regulation applications
• Flat support and machine plates
  For example, supports in drive or energy systems

With comprehensive process expertise and a deep understanding of hydraulic applications, Supfina develops machining solutions that are specifically designed for functional surfaces, reliable sealing, and long service life.

This results in stable and economical processes for demanding hydraulic components.

• Many years of experience in precision and surface finishing
• In-depth understanding of processes and materials
• Modular, scalable solutions
• High level of automation and system expertise
• Quality “Engineering with High Precision”

Superfinishing of bearing seats and flat machining of gear wheels

Fine grinding of valve plates, control plates, seating surfaces, and other components

Superfinishing of bearings and bearing seats

Flat finishing for valves

Double surface grinding for high flatness and parallelism requirements

Superfinishing of shafts