Special Issue; Products for Industrial Machinery - NTN

Introduction of New Products for Machine Tools
Super High-Speed AT Spindle
Hydrostatic air bearing spindle that can be mounted to
a machining center main spindle
Features
¡Attachment type can be mounted to a machining center main spindle (no special machine tool is needed)
¡Hydrostatic air bearing helps achieve a super high speed of 150,000 rpm and high-accuracy running
¡High-accuracy, high-rigidity chucking is possible with "a chuck that is shrink-fitted to the shaft"
¡Low-vibration, quiet, and long-life
Specifications
Maximum speed
Load capacity
150,000 min -1
Axial40 N
Radial20 N
Motor
Applicable tool diameter
Rating: 0.6 kW
3-phase induction motor: 200 VAC
Water-cooled: 1-2 L/min
1 mm or less
Static rigidity
Axial1.8 N /m
Radial1.0 N/
Tool grip system
Bearing air supply pressure
Heat-shrink method (dia. 6 mm)
0.49 MPa
Spindle mass
5 kg (not including shank)
Bearing air consumption
90 L/min (A.N.R.)
*The data for radial load capacity and rigidity were taken at a point 14 mm away from the spindle end.
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