Deep Groove Ball Bearings SKF 6003 -Z

The SKF 6003-Z deep groove ball bearing combines compact dimensions of 17 × 35 × 10 mm with single-sided dust protection and high running accuracy.

The 6003 -Z deep groove ball bearing is a single-row radial ball bearing made from standard rolling-element bearing steel (100Cr6) with a bore of 17 mm, an outside diameter of 35 mm and a width of 10 mm. The Explorer version manufactured by SKF features dimensional accuracy to tolerance class P6 and running accuracy to P5. This rolling bearing primarily accommodates radial loads as well as moderate axial forces. Thanks to its sheet steel cage, the bearing retains its dimensional stability during operation and is suitable for temperatures ranging from –20 to +150 degrees Celsius.

What are the industrial applications of the 6003-Z deep groove ball bearing?

Design engineers primarily use this radial deep-groove ball bearing where compact installation spaces require precise rotational movements. Typical applications include compact assemblies in general mechanical engineering and in rotating components with moderate load requirements. The standard radial bearing clearance ensures smooth running without unwanted preload at typical operating temperatures. As the outer ring has no flange or ring groove, it can be easily fitted into cylindrical housing bores and secured axially.

What is the function of the single-sided Z cover plate on the 6003-Z?

The -Z designation stands for a non-abrasive cover plate made of sheet steel on one side of the bearing. This cover serves to keep coarse dirt particles away from the rolling elements, whilst the open opposite side allows targeted lubricant access from inside the housing. Unlike rubber seals that come into contact with the bearing, the gap seal does not generate any additional friction, which reduces thermal stress. Before fitting, check the installation direction to ensure that the protected side faces the potential source of contamination.