Title:
HIGH SPEED ROTATING SHAFT EMPLOYING WATER OR RUBBER BEARING
Document Type and Number:
Japanese Patent JPS51132349
Kind Code:
A
Abstract:
A high speed drill spindle shaft is supported by lower and upper conically shaped rubber bushings matching corresponding tapered end portions on the shaft, the lower and upper tapers being in opposite directions. A spring urges the rubber bearings in the axial direction of increasing taper so that there is maintained a substantially zero clearance with the tapered end portions of the shaft. Water is introduced to the tapered engaging areas of the rubber bearings and the shaft tapered surfaces to essentially "float" the shaft, any changes in the dimensions of the rubber bearings being accommodated by axial movement of the bearings relative to the shaft to maintain the desired substantially zero clearance and yet prevent binding or excessive contact pressure.
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Inventors:
UIRIAMU EFU MARANTETSUTO
RUUSU BII MARANTETSUTO
RUUSU BII MARANTETSUTO
Application Number:
JP15386275A
Publication Date:
November 17, 1976
Filing Date:
December 23, 1975
Export Citation:
Assignee:
DIGITAL SYSTEMS
International Classes:
B23B19/02; B23B47/04; F16C27/06; B23Q1/70; F16C17/14; F16C33/22; F16C35/10; (IPC1-7): B23B19/02; F16C27/06
Previous Patent: JPS51132348
Next Patent: EXTERNAL WHEEL FOR COOUSE OF MAST ROLLER AND BEARING OF FORKLIFT AND I TS FABRICATION METHOD
Next Patent: EXTERNAL WHEEL FOR COOUSE OF MAST ROLLER AND BEARING OF FORKLIFT AND I TS FABRICATION METHOD