Careful selection of spindle bearing is analysed

Machine tool spindle bearing contact Angle of the common used 15 ° and 25 °, and widely application. Angular contact ball bearing accepted on the basis of the main shaft load and stiffness can choose the size of the transmitte structure mode.     A pair of angular contact ball bearings, back to back its features is the main shaft is skewed.     A pair of angular contact ball bearing face to face, its features are the main shaft has a good precision is perseverance.     A series of angular contact ball bearing, it can accept large axial load, so the contact Angle is 25 °.     Two bearing series and the third back-to-back structure, it make the spindle has good rigidity, high speed, widely used in CNC lathe, machining center, etc.     The selection of high-speed precision spindle bearing & emsp;   Ordinary fine high speed spindle bearing dN value is greater than zero. 6 x106m Mr/min, angular contact ball bearing should choose inner ring lock mouth, insists the outer diameter and inner diameter lead frame. This structure is conducive to smooth the oil along the channel and rolling body internal lock into the bearing, its limit rotational speed is 30% higher than Angle contact ball bearing outer ring lock. Widely used in these bearings, fine grinding machine of motorized spindle and spindle grinding when axial load is not big, often using the contact Angle is 15 ° angular contact ball bearings. The article links: machine tool business website http://www. jc35. com/tech_news/detail/92555。 超文本标记语言