SG22 U Groove Track Guide Bearing 8×22.5×14.5mm U Groove Roller Wheel, 4pcs
Why Choose This:★U Groove Bearing: I.D.=8mm, O.D.=22.5mm, Thickness=14.5mm, Groove width=10mm, Groove depth= 2.5mm.★ABEC Tolerance 1 (P0), Z1 Noise Level for most general use★Chromium Steel long-life bearings, smooth and low noise★SG20 bearings are Sealed on both sides to keep lubricant in★U-type pulley bearing fits the rail track system. Widely used in door and window to track and drive mechanical equipment.