The SKF 609-2Z/C3 shielded deep groove ball bearing is engineered for rotating assemblies requiring a 9mm bore, 24mm outside diameter and 7mm width. Its single row deep groove construction supports radial loads and axial loads in either direction within its rated capacity. SKF specifies a basic dynamic load rating of 3.9kN and a basic static load rating of 1.66kN, making these figures useful when evaluating fatigue life and peak loading in miniature drive components. The C3 clearance provides greater initial radial internal clearance than a standard CN bearing, helping accommodate clearance reduction caused by interference fits or differential thermal expansion. C3 is not automatically the correct choice for every application; the required running clearance should be checked against the operating conditions.
The 2Z designation identifies a pressed steel shield on each side of the bearing. Unlike rubber contact seals, these non-contact shields minimise additional seal friction while helping retain the factory-applied grease and restrict the entry of larger contaminants. They are particularly appropriate for relatively clean, high-speed environments rather than direct water exposure or heavy contamination. SKF lists a 34,000rpm limiting speed and a 70,000rpm reference speed, which are different technical ratings and should not be treated as interchangeable operating limits. The bearing incorporates a sheet metal cage and SKF Explorer performance classification. During replacement, verify the complete 609-2Z/C3 designation, since an otherwise dimensionally identical bearing with normal clearance or rubber seals may behave differently in service.
Typical Applications:
Small electric motor and auxiliary drive assemblies
Compact ventilation fans and blower mechanisms
Precision instrument and measurement equipment
Miniature belt-drive and pulley systems
Light-duty industrial automation mechanisms