Deep Groove Ball Bearings & Motor Bearings Manufacturer | NKMB
When buyers search for deep groove ball bearings, they often see model numbers such as 608ZZ, 6200ZZ, 6201ZZ, and 697ZZ. The letters “ZZ” describe the bearing shield structure. Understanding this term helps engineers, purchasing managers, and OEM buyers choose the right bearing for motors, fans, appliances, fitness equipment, and industrial products.
What Does ZZ Mean?
ZZ means the bearing has metal shields on both sides. These shields help reduce the entry of dust and small particles while keeping grease inside the bearing. A ZZ bearing is different from an open bearing, which has no shields, and from a 2RS bearing, which uses rubber seals.
Advantages of ZZ Ball Bearings
- Low friction
- Stable high-speed rotation
- Good grease retention
- Basic dust protection
- Suitable for motors, fans, rollers, and appliances
ZZ vs 2RS Bearings
ZZ bearings use metal shields and are often selected when low friction and higher speed are important. 2RS bearings use rubber seals and provide stronger protection against dust and moisture. If the application is clean and speed is important, ZZ is often a good choice. If the environment is dusty or wet, 2RS may be better.
Common ZZ Bearing Models
Common ZZ bearing models include 608ZZ, 6200ZZ, 6201ZZ, 6202ZZ, 697ZZ, and many miniature bearing models. These bearings are widely used in motors, fans, fitness equipment, office equipment, rollers, and household appliances.
For product options, view our 608ZZ Bearing or contact NKMB Bearings for OEM bearing solutions.
