Features

• Outstanding high machining accuracy, radial and axial runout < 0.5 μm
• High radial and axial stiffness
• No vibration from rolling elements
• Maximum damping of vibrations from machining process
• High surface quality and reduced tool wear through damping oil film
• Full load of bearing capacity and stiffness even at speed zero
• Wear-free, no mixed friction zone on starting and run-down
• Peripheral speeds up to 65 m/s
• Throttle system insensitive to turbulence and running gap
• Thermal stable, direct heat dissipation through lubricating oil
• Compact design; no external controller required, thanks integrated ZOLLERN bearing clearance compensator
• Sealing effected by non-contact air-gap seals

Typical applications

• Grinding spindle units
• Milling spindle units
• Workpiece- and turning spindle units
• Fine drilling spindle units
• Multi-spindle units

Examples