Set of 4 SMR72ZZ Deep Groove Ball Bearings 2x7x3mm 440C Stainless Steel Double Shielded ABEC 5 Precision Mini Bearings Ideal for Hobby Model Making RC Toys Robotics Micro Machinery and Electronics Assemblies

Compact SMR72ZZ deep groove bearings for tiny gear apps
✔️ 4 pcs SMR72ZZ: 2x7x3 mm, 440C stainless, double shields, ABEC 5

These deep groove ball bearings come in a 4-pack, sized 2x7x3 mm, made from 440C stainless steel with double shields for long life and quiet operation. Ideal for robotics, micro motors, and precision small machinery.

✅ Inner diameter d = 2 mm, outer diameter D = 7 mm, thickness B = 3 mm
✅ Seal type: double shielded on both sides
✅ Material: 440C stainless steel (9Cr18)
✅ Accuracy: ABEC 5
✅ Noise level: ZV3 for quiet operation
✅ Pack size: 4 bearings per set

💡 What is a sealed double shielded bearing used for in small precision machinery?

This handy guide explains common uses and benefits:

• Rotates smoothly with low friction in micro motors and robotics.
• Protects lubricant and blocks dust for longer life in tight spaces.
• Delivers stable radial and axial support for precision positioning.
• ABEC 5 tolerance helps repeatable performance in hobby and professional builds.