Deep Groove Ball Bearings SKF 624 -2Z

SKF 624-2Z compact deep-groove ball bearing with a 4 mm bore, 13 mm outer diameter and cover plates on both sides, designed for low-contamination small-scale applications.

The SKF 624 -2Z deep groove ball bearing is a compact, single-row miniature rolling bearing for precision engineering applications. With an inside diameter of 4 mm, an outside diameter of 13 mm and a width of 5 mm, it supports rotating shafts whilst taking up minimal space. The design, made from standard 100Cr6 bearing steel, combined with the dimensionally stable sheet steel cage, ensures smooth running. Manufactured to tolerance class P0/PN (ABEC 1), this size is suitable for both in-service repairs and new designs.

What is the 624-2Z deep-groove ball bearing suitable for?

This miniature bearing is used in assemblies with limited installation space, where it primarily accommodates radial forces and low axial forces. Typical applications include compact small drives, precision mechanical mountings and assemblies in measurement and control technology. The 100Cr6 material withstands the continuous rolling motion of the rolling elements. As the outer ring is manufactured without a groove or flange, the bearing can be fitted directly into smooth housing bores. Maintenance engineers frequently use this design as a precise replacement in existing small devices.

What advantages do the 2Z cover plates offer in this deep-groove ball bearing?

The sheet metal end shields on both sides of the 2Z variant form a non-contact gap seal. They keep foreign particles out without increasing friction at the sealing lips. Consequently, the bearing rotates smoothly and is well suited to drives with limited power output. The permissible temperature range is from –20 to +120 degrees Celsius. Non-contact cover plates primarily protect against dust and solid particles; for environments exposed to direct splashing water or fine liquids, abiding seals are preferable.