machine tool bearing

Technical Guide What Is a Rotary Table Bearing? A beginner's guide to cross roller and four-point contact ball bearings for machine tool buyers Guide from Anhui Yuanfeng Slewing Rings Co., Ltd. Quick Answer A rotary table bearing is a precision slewing bearing used in CNC machine tools such as boring machines, milling machines, and vertical lathes. It supports a rotating worktable, holds it steady under cutting force, and turns it to a new angle without losing position. The two most common designs are the four-point contact ball bearing and the cross roller bearing. Which one is right for you depends on the stiffness, accuracy, and load requirements of your application - not on the diameter alone. ◆ Key Takeaways 1. Two designs cover most machine tools: four-point contact ball b...