Description: SG10 bearings are specially guide wheel and pulley wheel for textile machine. Dual-row, pre-lubricated, normal accuracy, low noise and smooth. With small friction and high-limit speed, these u groove pulley bearings are cost-effective and require little maintenance. Chromium Steel (GCr15) made with heat treating, provides high and uniform hardness, good wear resistance, and high contact fatigue performance. Suitable for furniture hardware accessories, mobile doors, glass sliding doors, aluminum doors and windows, pulleys and drawers, etc. Specification:Model: SG10Sealed Type: Double SealedInner Race/Outer Race Material: Chrome SteelCage Material: SteelInner Diameter (d): 4mmOuter Diameter (D): 13mmInner Race Thickness (B): 6.5mmOuter Race Thickness (C): 6mmGroove Width: 4mmGroove Depth: 1mmFit Lead Rail Dia.: 5mmAccuracy Class: P0 (ABEC-1)Noise Level: Z1Number of Pack: 1 Pcs