XiKe 4 Pack 6203-2RS Precision Bearings 17x40x12mm, Rotate Quiet High Speed and Durable, Double Seal and Pre-Lubricated, Deep Groove Ball Bearings. <span class="a-text-bold">XiKe Bearings USA</span> is The Only Shop With United States XiKe Brand License, We Sales High-Quality Bearings, Pillow Block, Repair Kits, Steel Balls and Related Parts, Provide Professional Selection Guidance and Maintenance Knowledge Etc, Reduce Maintenance Costs and Replace Frequency, Create More Value for You. <span class="a-text-bold">SELECT GUIDE</span> - Choose The Right Bearing for Your Application. 2RS Double Seal - Suitable for Harsh   External Environments,   Low Rotate Resistance. ZZ Dust Cover - Suitable for Good   External Environment, Not Rotate Resistance. Open - Usually Applied to The Inside of   Machinery, Not Rotate Resistance. Model: 6203-2RS Pack: 4 Pcs Size: ID 17 x OD 40 x Width 12 mm External Design: Double Seal Precision Standard: ABEC-5 Speed Grease Lubrication - 12000 rpm Speed Oil Lubrication - 20000 rpm Load Dynamic - 2150 pounds Load Static - 1100  pounds