627-ZZ-C3 PFI Deep Groove Ball Bearing Shielded C3 Clearance (ID 7mm OD 22mm W 7mm)

PFI Fersa 620 Series Miniature Deep Groove Ball Bearings are single-row radial bearings designed for precise applications requiring small dimensions. These bearings feature a deep groove raceway that supports both radial and axial loads in either direction. They follow the standard 620 series sizing convention.​

Key Specifications

• Bore diameter (d): Starts at 10 mm for 620 and scales up incrementally in the series (e.g., 6201 at 12 mm).
• Outer diameter (D): Corresponds to standard metric sizes, such as 30 mm for 620.
• Width (B): Typically 9 mm for base models, accommodating compact installations.​
• Configurations: Available in open, shielded (ZZ), or sealed (2RS) variants to manage contamination and lubrication needs.​

Materials and Construction

Bearings use high-quality chrome steel (GCr15) for rings and rolling elements, with a pressed steel or polyamide cage for ball separation. The design ensures point contact between balls and raceways for low friction operation.​

Applications

Suitable for miniature machinery, electric motors, instruments, and precision equipment in industrial and automotive settings. PFI Fersa manufactures these for aftermarket use, emphasising compatibility with global standards.