Japanese energy industry goes Dmn value to achieve the columnar roller bearing of 1.6 million for development of main shaft of high speed machine tool

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  • source:MARSTEN CNC Machining
Industry of energy of Japan of 　 of bearing of the lube complement that uses high speed level columnar roller faced development of machine tool main shaft to give bearing of lube complement columnar roller (Cylindrical Roller Bearing) . Dmn is worth (pitch circle diameter (Pitch Circle Diameter) (Mm) × rotate speed (Rpm) ) achieve 1.6 million. The rotate speed when axial diameter is 70mm is 10 thousand 8000rpm, speed achieves the past 1.

3 times. Can use at using oil gas in the past the high speed domain of lubricant type bearing. Generally speaking, if resemble,be in in columnar bearing afferent stop push ball bearing (Angular Contact Ball Bearing) complement to roller from outer shroud euqally the word of lube, when additional lubricating oil give out heat easily. And the columnar roller bearing of new development directed oil storage plant is designed in place and external diameter in the external diameter of cage, lube passes interior of cage infuse bearing, can stabilize infuse consequently. In addition, through undertaking improvement to spacer appearance, raised a platoon oily, when preventing additional lubricating oil thereby, give out heat. If this kind of bearing installation is in,secure end, can the rotate speed of 10 thousand 8000rpm runs 20 thousand hours, fall in condition of 20 thousand Rpm when measuring end to use oneself can run 20 thousand hours. As sealed as lube model photograph of columnar roller bearing is compared, realized the long life of 60 times above. This company plans to be in 1 ～ had 8 days at Tokyo in November 2006 bright the international exhibition center holds " sample of machine tool of the 23rd Japan is exhibited (JIMTOF2006) " on showpiece this kind of bearing. After this, on 2007 appear on the market first. CNC Milling