Description: This groove bearings are specially guide wheel and pulley wheel for straightener, computerized knitting, fishing and gear spinning machine. Dual-row, pre-lubricated, normal accuracy, low noise and smooth. With small friction and high-limit speed, these v 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, shower pulleys and drawers, etc. Specification:Model: LV204-57ZZType: ShieldedInner Race/Outer Race Material: Chrome SteelCage Material: SteelInner Diameter (d): 20mmOuter Diameter (D): 57mmThickness (B): 22mmGroove Angle: 120°Fit for Shaft Dia.: 30mmAccuracy Class: P0 (ABEC-1)Noise Level: Z1Number of Pack: 1 Pcs
