Deep Groove Ball Bearings SKF 6318 -2Z

The 6318-2Z deep groove ball bearing from SKF Rolling Bearings, measuring 90x190x43 mm, offers robust performance for predominantly radial forces in industrial bearing applications.

The 6318-2Z deep-groove ball bearing is a single-row radial ball bearing in the Explorer series from SKF Rolling Bearings. The design accommodates high radial loads as well as axial loads in both directions. Manufactured from standard rolling bearing steel 100Cr6, this bearing is characterised by high dimensional stability and load-carrying capacity. The lubricant inside the bearing is protected by non-contact cover plates on both sides.

What loads and installation conditions can the 6318-2Z deep groove ball bearing handle?

The main dimensions – with a bore diameter of 90 mm, an outer diameter of 190 mm and a width of 43 mm – are designed to withstand demanding mechanical stresses. The single-row bearing reliably absorbs radial forces and moderate axial loads. A sturdy sheet steel cage guides the rolling elements with low vibration at medium to high speeds. As the cylindrical outer ring has no flange or ring groove, the rolling bearing fits directly into cylindrical housing bores.

What is the function of the cover plates on both sides of the -2Z variant?

The suffix -2Z denotes two integrated sheet steel cover plates, which form a narrow gap to the inner ring on both sides. As these gap seals do not come into contact with the rotating inner ring, they do not generate any additional frictional heat, meaning the bearing remains suitable for higher speeds. At the same time, the covers effectively shield the bearing from solid contaminants. This design features standard radial bearing clearance (CN) and covers a permissible operating temperature range of -20 to +120 degrees.