Rotary Fluid Bearings A typical Professional Instruments Company liquistatic spindle has six radial pockets. The pockets are ported to allow for direct pressure measurement. The inlet restrictors can be tuned to allow for custom-tailored performance. In-line oil filtration and oil-capture seals at the shaft ends are included. Brushless-DC motors and glass-disk encoders are built directly to the rotor and stator elements ensuring high performance operation, and extremely low noise. Cooling jackets surround both the motor and the bearing structures to minimize thermal growth. Balance provisions are built into the rotor at both ends of the spindle to allow for dynamic two-plane balancing. Our liquistatic spindles can be equipped with many of the same enhancements we provide for our air bearings. Piloted chucks, rotary unions, and rotor-grounding devices are just a few. Professional Instruments Company is presently building two different liquistatic spindle assemblies. We have proven designs for a variety of sizes, ranging from one to two inch diameter rotors up to rotors seven inches in diameter. Although Professional Instruments Company does not presently manufacture a standard line of liquistatic spindles, our ability to customize a bearing to your application should serve you well. |