Koyo 68012RU Double Sealed Deep Groove Ball Bearing 12 mm Inner Diameter 21 mm Outer Diameter 5 mm Width Built Tough With Steel Riveted Cage Round Bore For Motors Gearboxes And Heavy Duty Applications

Koyo 68012RU Single Bearing, Double Sealed Deep Groove 12mm
✔️ 12mm ID, 21mm OD, 5mm width, riveted steel cage

This double sealed, deep groove ball bearing is built for durability in motors, gearboxes, and heavy-duty machinery. Its round bore accepts standard shafts and the riveted steel cage keeps the rollers evenly spaced for smooth operation.

✅ 12 mm bore (ID)
✅ 21 mm outer diameter (OD)
✅ 5 mm width
✅ Double sealed for dust protection
✅ Steel riveted cage, round bore
✅ C0 internal clearance

💡 What is a sealed deep groove ball bearing used for in machinery?

Handy for keeping rotating parts aligned with minimal friction and protection from contaminants.

• Ideal for motors, gearboxes, conveyors, and heavy equipment needing reliable radial support
• Reduces friction for smoother operation and longer life
• Double seal design helps protect bearing internals in dirty environments
• Compatible with standard shaft sizes and mounting practices