SKF 619/5-2Z Metal Shielded Single Row Deep Groove Ball Bearing 5x13x4mm

The SKF 619/5-2Z shielded miniature deep groove ball bearing is intended for precision rotating assemblies where a 5mm shaft must fit within a 13mm housing bore. Its slim 4mm width makes it suitable for restricted axial spaces, while the single row deep groove construction accommodates radial loading and limited axial forces in either direction. SKF catalogue specifications give a basic dynamic load rating of 0.884kN and a basic static load rating of 0.335kN, making load assessment especially important in miniature applications. The 619/5 has a larger outside diameter than the 628/5, so both shaft and housing dimensions must be checked before substitution. Its bearing-steel rings, rolling elements and stamped steel cage provide a conventional miniature bearing construction.

The 2Z designation identifies metal shields fitted on both sides. These non-contact shields help retain the factory grease and reduce the entry of larger contaminants without the additional contact friction associated with rubber seals. They are best suited to relatively clean operating environments rather than applications exposed to water spray or fine abrasive contamination. SKF lists a 50,000rpm limiting speed for this shielded configuration, although actual operating capability depends on load, temperature, lubrication and mounting conditions. Normal (CN) radial internal clearance should be maintained through appropriate shaft and housing fits, particularly where interference mounting is used. For replacement work, confirm the 619/5-2Z designation rather than selecting an open, rubber-sealed or stainless-steel variant solely by dimensions.

Typical Applications:

Miniature electric motors and precision drive units

Measuring instruments and compact mechanical devices

Small automation and positioning mechanisms

Miniature guide rollers and pulley assemblies

Light-duty rotating shafts with 4mm-wide bearing seats