Deep Groove Ball Bearings SKF 6213 -2Z

The SKF deep groove ball bearing 6213 -2Z protects rotating shafts from contaminants with cover plates on both sides and compact dimensions of 65 × 120 × 23 mm.

This single-row deep-groove ball bearing 6213-2Z from SKF primarily accommodates radial forces as well as axial loads in both directions. The Explorer performance class version is made from roller bearing steel (100Cr6) and features a robust sheet steel cage. With an inner bore of 65 mm, an outer diameter of 120 mm and a width of 23 mm, the component is designed for standardised shaft diameters. The single-row design of the rolling elements ensures that the cross-section remains compact and straightforward.

What operating conditions does the 6213-2Z deep-groove ball bearing cover?

The bearing is designed for operating temperatures ranging from –20 to +120 degrees, thereby meeting a wide range of thermal requirements in continuous industrial operation. The cylindrical outer ring, without a flange or groove, fits directly into suitable housing bores, whilst the standard radial clearance ensures low-vibration operation when the shaft and housing seats are correctly matched. The version without electrical insulation must be used in mechanically isolated environments where electrical currents are present.

What is the function of the 2Z cover plates in this bearing?

The suffix -2Z denotes cover plates mounted on both sides, made from profiled sheet steel. Compared to contact seals, these plates form a narrow gap to the inner ring, thereby preventing any grinding friction torque. This limits heat build-up at high speeds and prevents additional rotational resistance. The shields keep coarse foreign particles out of the bearing interior and help to ensure that the lubricant remains between the raceways.