61903 Bearing - Open Ball Bearing 17x30x7mm

61903 Open Deep Groove Ball Bearing
✔️ Chrome Steel - 17mm x 30mm x 7mm - High Speed

The 61903 is a slim, open-type deep groove ball bearing made for high-speed, low-friction applications. With a 7mm width and 17mm bore, it's perfect for compact motor assemblies, gearboxes, and precision tools where smooth, unsealed performance is preferred.

✅ Pack of 1 bearing
✅ Inner diameter: 17mm
✅ Outer diameter: 30mm
✅ Width: 7mm
✅ Open design for reduced friction and easy maintenance
✅ Deep groove style for stable radial load support
✅ Made from high-strength chrome steel
✅ Dynamic load rating: 4,600 N
✅ Static load rating: 2,550 N
✅ Max speed (grease): 24,000 RPM
✅ Max speed (oil): 29,000 RPM

💡 Why use open deep groove ball bearings in clean or high-speed systems?
They’re made for smooth, accessible performance without drag.

• Open design reduces rolling resistance

• Easy to clean, inspect, and re-lubricate

• Great for spindles, motors, and low-friction drive systems

• Used in tools, lab equipment, and hobby builds

If you're after a fast-spinning, easy-access bearing, grab the 61903 and keep your setup light, clean, and smooth.