Jiaxing bearing | ball screw axial stiffness of the 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. Because of the screw in the process of work mainly bear axial force, the size of the axial force and axial stiffness of ball screw, the repositioning precision of the leadscrew, there are many factors that can affect screw axial stiffness, mainly includes: the axial stiffness of screw, the screw axial stiffness of supporting bearing and axial stiffness of ball nut, screw and the axial stiffness of the bearing, etc. The authors mainly discuss screw axial stiffness of supporting bearing and screw. 1, to understand the various bearing axial stiffness contrast size quite a thrust bearing axial stiffness is about angular contact ball bearings and tapered roller bearing axial stiffness of two times, maximum axial stiffness of thrust roller bearing, screw support with bearing axial stiffness between taper roller bearings, thrust cylindrical roller bearings. The axial stiffness big also means bigger starting torque. Can choose according to actual needs both economic and can satisfy the requirements of the bearing. Of course consider the bearing capacity and fatigue life of bearing. 2, screw support way and the effect of axial stiffness usually choose fixed screw drive on the supporting structure, so that we can reduce or eliminate screw and drive components of the joint, Parallel to the axial wrong, wrong, wrong) The impact on the screw position precision. 1) Fixed free support structure, the structure, is suitable for the positioning accuracy is not high, screw rotational speed is low and ball nut from or by a very small radial force condition. 2) Simply supported fixed support structure, this kind of structure, suitable for positioning accuracy requirement is too high, under the operation condition of the radial force is small, because the other end is simply supported, critical speed is higher than the fixed support free way. Because of the simply supported support can slide along the axial direction in a small range, so this way of support for the influence of the axial stiffness and fixed - - The same way free support. 3) Fixed support structure, the axial stiffness of support way, repetitive positioning accuracy is high, can withstand the bigger radial load, normally this kind of structure but also exert a certain tension in advance on screw, the screw bear radial load capacity is greatly increased, and in the case of temperature, screw can also keep a certain tension in advance, so that even if has a temperature change, the change in temperature will not affect the length of the screw, just change the size of the screw inner stress. If you are looking for the above jiaxing bearing group co. , LTD. The author introduces the bearing inspection and replacement of interest 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