Deep Groove Ball Bearings SKF 6011 -Z

The SKF 6011-Z deep groove ball bearing, with a 55 mm bore and a single-sided cover, provides precise support for radial loads.

The single-row deep groove ball bearing 6011 -Z primarily accommodates radial forces as well as axial loads in both directions. Manufactured from standard rolling-element bearing steel 100Cr6 and fitted with a sheet steel cage, the component is suitable for a temperature range of –20 to +150 degrees Celsius. The SKF Explorer version is characterised by its manufacture to tolerance class P6 (ABEC 3), which contributes to high concentricity and precise shaft guidance.

In which installation scenarios is the 6011-Z deep groove ball bearing used?

This rolling bearing is used in mounting arrangements where one side of the bearing seat needs to be protected against contamination, whilst the other side remains open for lubricant supply. With external dimensions of 55 × 90 × 18 mm, the bearing fits into standardised housing seats without a flange or groove. The standard radial clearance ensures smooth rolling of the rolling elements at standard operating temperatures and with common fits.

What is the function of the single-sided Z cover plate on the 6011-Z bearing?

The metal Z-cover plate covers the inside of the bearing on one side without making contact. This prevents coarse dirt particles from entering the raceway from the outside without causing additional friction or heat in the rolling contact. The open rear side also allows for unhindered lubricant exchange in oil or relubrication systems. During assembly, it is recommended that the protected side be specifically aligned towards the potential source of contamination.