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Its metal shields on both sides help protect against dust while maintaining low friction
Deep groove ball bearings are known for their versatility
Compact size
✅ Chrome steel races with low-friction steel cage
✅ Outer size: 4" square
61903-2RS1 Ball Bearing Double Sealed ID 17mm OD 30mm Width 7mm Outer Diameter - 210mm Its metal shields on both61903 2RS1 Deep Groove Ball Bearing Single Row Radial Design Sealed 17x30x7mm This 61903 2RS1 bearing is a compact deep groove ball bearing built for precision and durability in limited space applications. With rubber seals on both sides, it keeps grease in and dirt out, perfect for electric motors, gearboxes, tools, and inline skate hubs. Type: Deep Groove Single Row Ball Bearing Size: 17mm x 30mm x 7mm Inner Diameter (ID): 17mm (. 669") Outer
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