Title :
Charge generation and bleed-off in spindle motors with ceramic ball bearings
Author :
Klaassen, K.B. ; van Peppen, J.C.L.
Author_Institution :
IBM Almaden Res. Center, San Jose, CA, USA
fDate :
March 30 2003-April 3 2003
Abstract :
In this paper, the negative voltage between the rotor and stator of the spindle motor is determined by the equilibrium between the charge generation in the bearings and the charge bleed-off in the ferro-fluid seal of the motor.
Keywords :
ball bearings; capacitance; ceramics; electric charge; machine tool spindles; magnetic fluids; sealing materials; ceramic ball bearings; charge bleed off; charge generation; ferro-fluid seal; negative voltage; rotor; spindle motors; stator; Ball bearings; Ceramics; Charge transfer; Circuits; Current measurement; Seals; Voltage;
Conference_Titel :
Magnetics Conference, 2003. INTERMAG 2003. IEEE International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7647-1
DOI :
10.1109/INTMAG.2003.1230271
