APPLICATION-The deep groove ball bearing is applied to the industrial equipment, micro motor, small rotary motor, office equipment, machines and gearboxes and so on.ABOUT THIS PRODUCTS-The bearing is made of chrome steel bearing, which contains resistance to heavy loads.-The bearing is made of chrome steel, which is durable. And it features Z1 lever, which is low noise to keep the environment quiet. And it has small friction and high-limit speed, which maintains the efficiency.SPECIFICATIONModel: 6307ZZSeal Type: Double ShieldedInner Race/Outer Race Material: Chromium Steel (GCr15)Cage Material: Stamping SteelInner Diameter: 35mmOuter Diameter: 80mmThickness: 21mmDynamic Load Rating (Cr): 33.4kNStatic Load Rating (Cor): 19.3kNAccuracy Class: P0 (ABEC1)Noise Level: Z1Clearance Grade: C3NOTE-Please pay attention to the size and type of the bearing and keep it clean and lubricant.