Hydrostatic Systems and Components
We are a Sales and Engineering Representative of Hyprostatik Schonfeld GmbH of Goppingen, Germany. The Hyprostatik PM-Flow Controller and hydrostatic components have been implemented in over 4,000 varied types of precision machine tools and components including grinding machines, measuring machines, high-speed machines, CNC lathes, machining centers, and milling machines, as well as large bearings and spindles.
Hyprostatik can engineer a hydrostatic system to nearly any machine design requirement. A complete hydrostatic system from Hyprostatik uses the PM-Flow Controller and engineering specifications and instructions for a series of strategically placed pockets which are machined into moving surfaces of the machine by the machine builder. Variables such as pocket surface area, oil viscosity, pump pressure, and flow control are taken into account when designing for a defined gap size, load capacity and stiffness requirement.
The oil used in the hydrostatic system is the same oil that is used in the hydraulic system on the machine. Very little oil is used in the hydrostatic system, and a collection system designed into the machine re-circulates the small amount of accumulating oil through an oil filtration system. The PM-Flow Controller maintains a steady-state oil pressure in the hydrostatic pathways necessary to support a load, regardless of grinding or cutting stress, the weight of a workpiece, or its location.
Hydrostatic Application Worksheet
Download the PDF data sheet for the Hydrostatic Application Worksheet
Hydrostatic Slides
- Very low friction, no friction at positioning
- Movement of 0.1 micro-m possible
- No reversal backlash of friction force
Hydrostatic Linear Motor Guide
The PM Flow Controller makes it possible for machine builders to easily integrate custom hydrostatic systems into both new and existing machines.
Application: Hydrostatic Linear Motor Guide
Linear motors are used on high-speed machine tools with high acceleration and slide speeds. For slides with linear motors, HYPROSTATIK has developed hydrostatic guideways that have no wear, excellent damping characteristics, high stiffness and much lower friction when compared with ball or roller rails.
Hydrostatic Rotary Tables
Application example of a glass grinding machine used at Zeiss.
Hydrostatic Leadscrews
- Speed comparable to a linear motor
- Very low friction when machining, virtually frictionless
during positioning
- Steps in the 0.1 micron range are possible
- No backlash when reversing direction
Comparison: Hydrostatic Leadscrews, Linear Motors, and Ballscrews
Design limitations and problems in ballscrew applications lead to the development of linear motors and to wear-free hydrostatic leadscrews. In
this article we introduce the hydrostatic leadscrew system from HYPROSTATIK
Schönfeld GmbH and compare its technical features with linear motor drives
and ballscrews.
Hydrostatic Universal Bearings
- Frictionless even at minute revolutions
- Transmits minute rotating motion
- No backlash when reversing direction
- Slip-stick effect is eliminated
Hydrostatic Center Bearings
- Only one radial bearing
- Moment and axial forces are carried by an axial bearing
- Integrated clamping piston and rotating oil union for a hydraulic collet. The clamping piston is driven with hydrostatic oil and released with springs.
- Extremely minimal friction (results in minimal warming during continuous operation, and more of the motor drive force applied to the workpiece).
Hydrostatic Grinding Spindles
Radial Diameter: 24 mm
Maximum Speed: 35,000 RPM
Maximum Radial Load: 800 N
Radial Stiffness: 70 N/micro-m
Pump and Friction Power: 0.58 kW at 35,000 RPM
Hydrostatic Grinding Spindles with Integral Motors
- Very low friction will heat the spindle only slightly. Nearly all motor power gets to the
workpiece.
- Heat that is generated is moved immediately out of the spindle area with the oil and
cooled in the chiller.
- No vibration from roller bearings for extremely smooth operation.
- Excellent damping of vibration during grinding process, resulting in superior surface finish and workpiece accuracy. In addition, grinding wheels will stay sharp longer.
CBN Hydrostatic Grinding Spindle Systems
This is an example of a hydrostatic spindle designed for high speed grinding with CBN grinding wheels. The small bearing diameter in combination with high surface speed allows the use of CBN wheels even for undercuts in a camshaft application.
Hydrostatic Lathe Spindles
- Very low friction will heat the spindle only slightly. Nearly all motor power gets to the
workpiece. Heat that is generated is moved immediately out of the spindle area with the oil and cooled in the chiller.
- No vibration from roller bearings for extremely smooth operation.
- Excellent damping of vibration during grinding process, resulting in superior surface finish and workpiece accuracy. In addition, grinding wheels will stay sharp longer.
Submit your feedback