A ground shaft can normally meet a straightness requirement of less than 5 microns. Bearings have a positive effect on runout however, greatly reducing runout.
Mount both the front and rear bearings in a stator bore that has a single diameter. The single bore lines up the bearings precisely with each other. It is possible on certain lathes to hold that bore to within 1 to 2 microns of diameter and straightness variance.
Use a threaded bearing preload adjuster and wave spring to precisely set the preload. Until now, most designs use spacers and wave springs. There may be several thicknesses of spacers and wave springs stacked. An adjustable threaded spacer, combined with a single wave spring, is screwed into position while monitoring the effect on motor starting torque to reach a target close-loop preload.
More About WBM:
Founded in 1988,WBM is a professional provider of bearing cold heading dies, taper rollers, grinding tools and detection equipment and comprehensive service of consultation/trading in supply chain of the bearing industry. Designing, production, sales, service and survey are all included in the quality management system.
https://www.w-bm.com/
2025 New Week WBM Product Recommendation:
Cutter:
WBM produces taper roller dies with high efficiency and automation. Rollers are formed on a single automatic cold heading press and are fed, cut, and punched into the die for five steps.
We can produce different types and sizes taper roller dies with quality assurance,include:Combination Punch,Outside Sleeve,Blade,Combination Punch,Feed Cylinder,Combination Dies,Double Layer Sleeve,Insert.
Contact Us:
Tel: +8615937969996
Email: info@w-bm.com
Website: www.bearingroller.com