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 chromium steel bearing, which contains resistance to heavy loads.-The bearing is made of chromium steel, which is durable. And it features Z2 lever, which is low noise to keep the environment quiet. And it has small friction and high-limit speed, which maintains the efficiency.SPECIFICATIONModel: 6906-2RSSeal Type: Double SealedInner Race/Outer Race Material: Chromium Steel (GCr15)Cage Material: Stamping SteelInner Diameter (d): 30mmOuter Diameter (D): 47mmThickness (B): 9mmDynamic Load Rating (Cr): 7.24kNStatic Load Rating (Cor): 5.01kNAccuracy Class: P6 (ABEC3)Noise Level: Z2Number of Pack: 10pcsNOTE-Please pay attention to the size and type of the bearing and keep it clean and lubricant.