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2. Air bearing - Wikipedia

   en.wikipedia.org/wiki/Air_bearing

   Gas bearings are mainly used in precision machinery tools (measuring and processing machines) and high-speed machines (spindle, small-scale turbomachinery, precision gyroscopes). Air borne high frequency spindle with integrated feeding

3. Spindle (tool) - Wikipedia

   en.wikipedia.org/wiki/Spindle_(tool)

   A main component of this spindle is the motor, stored internally. Internal Motor: limited power and torque due to restricted space within the spindle housing; Speed Range: 20,000 [3]-60,000 RPM [2] (top speed according to design) Advantage: high top speed expands application use; Disadvantage: sensitive life range according to use

4. DN factor - Wikipedia

   en.wikipedia.org/wiki/DN_Factor

   DN factor. DN factor, also called DN Value, is a number that is used to determine the correct base oil viscosity for the lubrication of various types of bearings. [1][2][3][4][5] It can also be used to determine if a bearing is the correct choice for use in a given application. [3] It is a product of bearing diameter (D) and speed (N). [1][2]

5. Bearing (mechanical) - Wikipedia

   en.wikipedia.org/wiki/Bearing_(mechanical)

   A ball bearing. A bearing is a machine element that constrains relative motion to only the desired motion and reduces friction between moving parts.The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts.

6. Fluid bearing - Wikipedia

   en.wikipedia.org/wiki/Fluid_bearing

   Hydrodynamic bearings rely on the high speed of the journal (the part of the shaft resting on the fluid) to pressurize the fluid in a wedge between the faces. Fluid bearings are frequently used in high load, high speed or high precision applications where ordinary ball bearings would have shortened life or caused high noise and vibration. They ...

7. Lathe - Wikipedia

   en.wikipedia.org/wiki/Lathe

   The headstock contains high-precision spinning bearings. Rotating within the bearings is a horizontal axle, with an axis parallel to the bed, called the spindle. Spindles are often hollow and have an interior Morse taper on the spindle nose (i.e., facing to the right / towards the bed) by which work-holding accessories may be mounted to the ...