Order the NACHI 6203ZZEC3 deep groove ball bearing (17x40x12mm), designed for reliable performance in a wide range of industrial and mechanical applications. This bearing features double non-contact metal shields (ZZ equivalent) to protect against dust, dirt, and contaminants, extending service life and reducing maintenance. Order Today!
Key Features and Specifications:

- Brand: NACHI
- Model: 6203ZZEC3
- Size: 17mm(ID) x 40mm (OD) x 12mm (Width)
- Bearing Type: Deep Groove Ball Bearing
- Shield: Double Non-Contact Metal Shields (ZZ Equivalent)
- Clearance: C3
- Precision Rating: ABEC 1 / Normal Class
Important Usage Note (Read Before Ordering)
- This bearing is NOT suitable for high speed or precision spindle applications
Do NOT use if your application requires
- Precision classes P2, P4, P5, or P6
- High-speed spindle performance
If your application requires high precision or high speed, request a Custom Quote to ensure proper specification!
Cross Reference (17mm x 40mm x12mm Interchange)
- 6203ZZ (shielded on both sides)
- 6203Z (metal side shields single side)
- Comes shielded but shields can be removed
Why Choose This Bearing?
- Trusted NACHI manufacturing quality
- Excellent sealing for contaminated environments
- Reliable performance in general industrial environments
- Cost-effective solution for OEM replacements
Common Applications:
- Electric Motors
- Gearboxes
- Pumps and Fans
- General Industrial Machinery
- OEM Equipment and Assemblies

NACHI 6203ZZEC3 Bearing - 17 x 40 x 12 Sealed C3 Deep Groove Ball Bearing