MR6903ZZ Bearing Deep Groove 17x30x7mm

MR6903ZZ Shielded Ball Bearing - Slim & High-Speed
✔️ 17mm x 30mm x 7mm - Chrome Steel - Metal Shields

The MR6903ZZ is a compact deep groove ball bearing made for high-speed motion in space-limited systems. Built from durable 52100 chrome steel and sealed with double metal shields, it locks in grease and resists dust - ideal for electric motors, 3D printers, RC builds, and lightweight machinery.

✅ Size: 17mm ID x 30mm OD x 7mm Width
✅ Type: Deep groove, slim section radial bearing
✅ Material: Chrome steel (52100 alloy)
✅ Shields: Double metal (ZZ)
✅ Lubrication: Pre-greased, maintenance-free
✅ Clearance: C0 (standard)
✅ Max Speed (Greased): 24,000 RPM
✅ Dynamic Load Rating: ~3,850 N
✅ Static Load Rating: ~1,800 N
✅ Quantity: 1 bearing

💡 What are the benefits of slim shielded ball bearings like MR6903ZZ?
Slim bearings allow for precision motion without bulk, and metal shields protect the internals in high-speed environments.

• Ideal for compact, fast-moving systems

• Metal shields reduce drag and keep grease in

• Reliable for RC drives, skates, and mini motors

• Runs smooth and quiet under light to moderate load

Add the MR6903ZZ to your build for tight-fit performance that’s clean, fast, and ready to roll.