Precisely machined with the CNC lathe and with built-in precision bearings, the pulleys can rotate flexibly and smoothly, without any noises. 1) Material: Chrome steel or carbon steel 2) Precision: P0 - P6 3) Vibration: Z1 - Z3 4）Clearance: C0 - C5 5) Series: U groove,V groove,external spherical surface and flat wheel etc. 6) Application: Door, sliding door, retractable door, mechanical equipment etc. Our company can produce more than 50 specifications of metallic pulleys. We also produce customized pulleys according to samples or drawings provided by the client. For more information about pulleys and our company other produces, please don’t hesitate to contact us.