HRB bearing of the spindle assembly and adjustment of double row cylindrical roller bearing

There is rotational, have HRB bearing ( ) Jiaxing bearing group sales co. , LTD. ( The company) Is bearing group co. , LTD. Established in jiaxing spot sales window, specializing in HRB brand bearings, facing the whole country, the existing stock 50 million yuan, covers the whole bearing, have very strong spot supply, is the group's retail sales center. Cone Kong Shuang row cylindrical roller bearings belong to the linear contact bearings, the bearing capacity and stiffness is higher than that of point contact angular contact bearings, commonly used in larger load and stiffness requirements higher, and the speed is not high, in the relatively large, heavy machine tool spindle system. Related to the main shaft system on the basis of the author to share the double row cylindrical roller bearing assembly adjustment method. 1, main shaft bearing of matching. Main shaft and bearing manufacturing error exists, it is bound to effect the precision of the rotation of the spindle component. In the spindle component assembly, if make the error of the two effects cancel each other out, can further improve the rotation accuracy. Because of the roller bearing inner ring with the spindle rotation, its radial runout ( Or pendulum) The biggest effect on the bearing rotation accuracy. Therefore, generally only adjust the bearing inner ring and the relative position of main shaft journal. 2, the spindle rolling bearing clearance ( Clearance) And its adjustment. The spindle rolling bearing interval ( Clearance volume) Size on the spindle component had important effect on working performance and bearing life. When the bearings work under larger gap, can cause the spindle position ( Radial or axial) The migration and directly affect the machining accuracy. At this time, the bearing load is small, load concentrated to the stress in the direction of a one or a few rolling body, causing significant stress concentration, caused by heat and wear intensifying and reduce the bearing life. 3, bearing inner and outer ring installation regular inspection and adjustment. The ratio of the width and the diameter of double row cylindrical roller bearing is generally between 4 ~ 7, due to the double row cylindrical roller bearing diameter width is larger, resulting in the spindle box on the hole and shaft installation guidance performance is poorer. Also large machine tool parts size and quality is bigger, bring certain difficulty to assembly work, easy to cause uneven when installing the bearing strength. More than a variety of reasons, lead to the main shaft bearing inner and outer circle of the installation position offset, bearing and roller bearing inner and outer circle poor contact, the spindle stiffness and rotation accuracy is reduced. Inspection main shaft bearing inner and outer circle of the correct installation method is as follows: in the process of preloaded bearing inner ring, the rotation of the spindle, and observation of rolling element bearing rotation. If you are interested in the above HRB bearing the author introduces the information or have any questions, please click on the website on the right side of the online customer service or call:, you close the way of jiaxing bearing purchasing advisors. - - - - - - - - - - - Editor: jiaxing bearing sourcing consultant LTD. All rights reserved, The company) Reprint please indicate the source