Description
NOTE：Please refer to the picture and select right type of bearings before your order (Sealed or Shield on BOTH or SINGLE side of the bearing). Suffix on the bearing just for differentiating between Sealed and Shield type of bearing. It would not affect the use of our productription:Single-row, pre-lubricated, normal accuracy Groove Ball Bearings are one of the most widely used rolling bearings. They are used to accommodate radial and axial loads in both directions small friction and high-limit speed, Ball Bearings are cost-effective and require little maintenancemium Steel (GCr15) made with heat treating, provides high and uniform hardness, good wear resistance, and high contact fatigue performanceable for all kinds of industrial equipment, micro motor, small rotary motor, office equipment and so oncting Guide:Shields (Designation Suffix Z/ZZ) – High speed. Protect from dirt and debrised (Designation Suffix RS/2RS) – Made of sheet steel reinforced nitrile butadiene rubber (oil- and liquid-resistant). Lower limit speed than Shield Bearingsification:Model: 638ZZShield Type: Double ShieldedInner Race/Outer Race Material: Chrome Steel (GCr15)Cage Material: Stamping SteelInner Diameter (d): 8mmOuter Diameter (D): 28mmThickness (B): 9mmDynamic Load Rating (Cr): 3.54kNStatic Load Rating (Cor): 1.99kNAccuracy Class: P6 (ABEC-3)Noise Level: Z1Number of Pack: 2 Pcs