Sealed Ball Bearing 20mm By 37mm By 9mm Deep Groove Chrome Steel 52100 Durable Precision Bearing For Machinery 20mm Inner Diameter 37mm Outer Diameter 9mm Width Ideal For Industrial Applications Also Suitable For Motors Conveyors Robotics

Premium 6904DDU sealed ball bearing 20x37x9 mm
✔️ 20x37x9 mm / 0.79x1.46x0.35 in, chrome steel, pre-lubed

The 6904DDU is a sealed deep groove ball bearing designed for smooth rotation in compact spaces. It uses chrome steel for strength and rubber seals to keep dirt out, making it a solid choice for automation, conveyors, motors, and hobby projects.

✅Inner diameter mm、outer diameter mm、width mm
✅ Material: Chrome steel (52100) with rubber seals
✅ 潤滑：グリースによる事前潤滑済み
✅ Type: Sealed deep groove ball bearing
✅ Pack: 1 bearing (single)

💡 What is a sealed ball bearing used for in general mechanical assemblies?

These bearings provide smooth motion, protection, and long life in common metalworking setups. - handy for motors, conveyors, and linear motion in tight spaces
- protects against dust and moisture with rubber seals
- reduces maintenance thanks to pre-lubricated grease
- supports radial loads with low friction for longer life