PMK Hydrostatic Spindles represent the pinnacle of precision machining technology, utilizing a pressurized oil film instead of traditional mechanical bearings. This non-contact support system eliminates mechanical wear and provides exceptional damping characteristics, making these spindles the ideal choice for ultra-precision grinding and turning operations where surface finish and sub-micron accuracy are critical.

Designed for extreme stability, these spindles maintain their precision and stiffness even at zero speed, providing robust support for heavy workpieces. The integrated oil flow acts as a continuous cooling system, flushing away heat and ensuring dimensional stability during high-load production cycles.

Key benefits

• Near-Zero Runout: The "averaging effect" of the hydrostatic oil film delivers sub-micron rotational accuracy.
• Infinite Bearing Life: Elimination of metal-to-metal contact ensures consistent performance over decades of operation.
• Superior Damping: The pressurized oil film suppresses vibration and chatter, enabling mirror-like surface finishes.
• High Thermal Stability: Constant oil recirculation flushes away heat, maintaining exact operational geometry.
• Extreme Load Capacity: Maintains high stiffness and support capability across all speed ranges, including zero RPM.

Applications

• Ultra-precision cylindrical and surface grinding for aerospace and optics.
• Hard turning and diamond turning of semiconductor and optical components.
• High-accuracy bore grinding for automotive fuel injection and hydraulic valves.
• Heavy-duty machining requiring extreme vibration suppression under high load.
• Retrofit upgrades for legacy machinery transitioning to sub-micron precision.