YRT rotary table bearing YRT200 Size: 200x300x45mm Material: GCr15 bearing steel Axial/Radial runout: 4μm or 2μm (Higher running accuracy available upon request) Working temperature: -30â ~ 120â Load direction: axial and radial Lubrication hole: Yes (users can arrange relubrication through the oil holes on outer ring and L-section ring.) Preload: All BRS YRT200 bearings have been fitted and fully screw mounted already, they are radially and axially clearance-free and preloaded.