The SKF 626-2Z/C3 shielded miniature deep groove ball bearing is designed for applications requiring an accurately supported 6mm shaft and a compact 19mm outside diameter. Its 6mm width allows installation in small housings while the deep groove raceways accommodate predominantly radial loads together with axial forces in either direction, subject to rated capacity. SKF specifies a basic dynamic load rating of 2.34kN and a basic static load rating of 0.95kN, providing useful reference values for assessing operational loads and fatigue life. The C3 radial internal clearance is greater than the normal (CN) clearance of a standard 626-2Z bearing. This allows designers to account for clearance reductions caused by interference fits and temperature differences, but C3 should only be selected where the equipment specification requires it.
The 2Z designation identifies non-contact metal shields fitted on both sides of the bearing. Unlike rubber contact seals, these shields minimise additional sealing friction, making them particularly useful in miniature mechanisms operating at higher speeds. They help retain factory grease and restrict larger particles, although they provide less protection against moisture and fine contaminants than contacting rubber seals. SKF lists a 40,000rpm limiting speed for this bearing, with actual operating suitability dependent on lubrication, loading and temperature. Its sheet metal cage and grease-filled construction support compact, low-maintenance assemblies. During installation, confirm the 6 x 19 x 6mm dimensions and C3 suffix, use appropriate shaft and housing tolerances, and avoid transferring fitting forces through the rolling elements.
Typical Applications:
Small electric motors with specified C3 clearance
Miniature fans and ventilation mechanisms
Compact high-speed mechanical drives
Precision automation and positioning assemblies
Light-duty instrument and rotating shaft supports