This package includes 2 bearing. A double of NACHI 6205 2 NSE9 C3 Bearing 25x52x15mm, Deep Groove Ball Bearings. 6205- 2 NSE9 C3 Deep groove Nachi bearing - high quality 2 side rubber seals. Dimension: d (Inside) Bore 25 mm D (Outside) 52 mm B (Width) 15 mm. The bearing has deep groove geometry for supporting both radial and axial loads and high speeds. The races are made of chrome bearing steel for durability and resistance to deformity under heavy loads. The C3 radial clearance allows thermal expansion for continuous operating temperatures up to 248 degrees F/120 degrees C. Rubber seals on both sides of the bearing help retain lubricant and exclude contaminants. The ball is made of chrome bearing steel for strength and resistance to wear and deformation. The static load rating is 15,300 newtons and the dynamic load rating is 25,700 newtons. A steel cage spaces the balls for even load distribution and prevents contact to reduce friction, vibration, and noise.