Deep Groove Ball Bearings SKF 6209 -2Z

The SKF 6209-2Z deep groove ball bearing is a single-row radial ball bearing with a 45 mm bore, an 85 mm outer diameter and sheet metal end shields on both sides.

The SKF 6209-2Z deep groove ball bearing primarily accommodates radial forces as well as axial loads in both directions. Manufactured from standard 100Cr6 rolling-bearing steel in the SKF Explorer performance class, this single-row rolling bearing features matched raceways and rolling elements. The cover plates fitted on both sides protect the interior from solid contaminants without causing friction losses. With dimensions of 45 × 85 × 19 mm, this design covers a wide range of applications in industrial mechanical engineering.

What is the 6209-2Z deep groove ball bearing suitable for in mechanical engineering?

Design engineers prefer to use this rolling bearing on rotating shafts subject to moderate axial loads and high radial loads. Typical applications include rotating machine components exposed to moderate levels of dust. As the cover plates on both sides operate without contact, there are no additional friction losses or frictional heat. The bearing is suitable for applications where high speeds are required and solid foreign particles need to be kept out.

What role do the 2Z cover plates and the standard bearing clearance play?

The designation -2Z stands for two non-contacting gap seals made of sheet steel. Unlike abiding seals, the rotational resistance remains minimal, which is why this design is recommended for heat-sensitive systems. The standard radial bearing clearance must be taken into account during design. It is suitable for standard fits on the shaft and in the housing, provided that no significant temperature differences occur during operation. The operating temperature range is from -20 to +120 degrees Celsius.