Double-sided rubber seal: This bearing is equipped with a double-sided rubber seal, which effectively prevents the entry of dust and moisture extending the service life of the bearing and maintaining optimal performance.P5 (ABEC5) precision grade: This bearing has a P5 (ABEC5) precision grade, which ensures smooth and precise operation, making it suitable for high-speed rotation and applications requiring high precision.Z3 Noise Level: Designed to minimize friction and vibration, this bearing has a Z3 noise level, providing a quiet, noise-free working environment and improving user comfort.Chrome steel material: Deep groove ball bearings are made of quality chrome steel with excellent strength, hardness, wear resistance and corrosion resistance. It can withstand significant radial and axial loads, providing reliable support in a variety of applications.Widely used: used in power tools, home appliances, auto parts and various mechanical equipment to provide reliable and efficient support and operation for equipment.Selecting Guide: Open Type (No Designation Suffix) - Suitable for high-speed and even very high-speed operation. Shielded (Designation Suffix Z/ZZ) - High speed. Protect from dirt and debris. Sealed (Designation Suffix RS/2RS) - Made of sheet steel reinforced nitrile butadiene rubber (oil- and liquid-resistant). Lower limit speed than metal shield bearings. Specification:Model: 6004-2RSSealed Type: Double SealedInner Race/Outer Race Material: Chrome Steel (GCr15)Cage Material: Stamping SteelDimension: 20x42x12mm/0.79"x1.65"x0.47"(Inner Dia*Outer Dia*T)Dynamic Load Rating (Cr): 9380NStatic Load Rating (Cor): 5020NAccuracy Class: P5(ABEC5)Noise Level: Z3Package Content:2pcs x Deep Groove Ball Bearings