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.
The hydrostatic spindles "float" on hydrostatic oil pads, resulting in an interface that is wear-free. As a result, the extremely good run-out and high stiffness characteristics of the spindle do not deteriorate over the life of the machine, regardless of the operating forces and speeds. The excellent damping and smooth operation of the roller-free bearing can be seen in the better workpiece finish quality and also because grinding wheels will stay sharp longer. Since the friction of the hydrostatic bearing is so low, over 95% of the motor power goes to the workpiece and the spindle temperature will increase less than 10 degrees C, even at maximum force and speed. In addition, bearing pre-stress, unbalance, and cutting force can be directly measured by monitoring the hydrostatic pocket pressure.
The hydrostatic lathe and grinding machine spindles are suitable for applications on horizontal or vertical machines. They are available for belt-drive, direct drive, or as a motor spindle.
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... DetailsPDF
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. DetailsPDF
BKW Cooling Filtration Systems
Cooling Filtration Systems are designed for automatic purification cleaning and temperature equilibration of cooling lubricants. They are used in honing, grinding and glass... DetailsPDF
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.... DetailsPDF
BERG Steep Taper Grippers SSK-JBS
SSK gripper are primarily designed for drawing in and ejecting steep taper tooling provided with retention knobs internationally standardized as per DIN, ANSI, MAS, JIS and... DetailsPDF
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PDF data sheet: CBN Hydrostatic Grinding Spindle Systems (240.520)
