Sealed Ball Bearing 12 X 21 X 7 Mm 63801-2RS Radial Deep Groove Chrome Steel With Rubber Seals And Steel Cage For Dust Protection High Precision And Low Friction In Industrial Machinery Automotive And Hobby Applications

Sealed 12x21x7 mm ball bearing, 1-pack, RS seals for high speed
✔️ 12x21x7 mm chrome steel, double sealed RS, pre-lubricated

This sealed radial deep groove ball bearing is a compact, high-performance component designed to support smooth rotation in electric motors, conveyors, fans, and other machinery where dust protection and high-speed operation matter.

✅Inner diameter：12 mm
✅Outer diameter：21 mm
✅Width：7 mm
✅Material: Chrome steel
✅ ケージ：スチール製
✅ Seals: Double rubber RS/RS1/2RS1
✅ 潤滑：グリースによる事前潤滑済み
✅ Quality: Electric motor quality (EMQ)
✅Pack size:

💡 What is a sealed ball bearing used for in high-speed machinery?

Sealed ball bearings are handy for maintaining smooth shaft rotation while protecting components from dust and moisture in compact layouts.

- They support radial loads in tight spaces
- They keep lubrication sealed to reduce maintenance
- They fit common shaft sizes for easy replacement
- They are handy for quick mounting in tight spaces