Deep Groove Ball Bearings SKF 6200 -2Z

The designation -2Z indicates cover plates made of sheet steel that are pressed in on both sides. Together with the inner ring, these plates form a fine sealing gap. They protect the rolling elements from solid foreign particles, but do not come into contact with the rotating surfaces. Consequently, no additional frictional torque is generated, which preserves the bearing’s full speed capability.

These designations define the manufacturing tolerances of the rolling bearing. Dimensional accuracy complies with tolerance class P6, whilst running accuracy is manufactured to class P5. Both classes have tighter tolerances than the standard ‘Normal’ class. This results in lower deviations in concentricity and supports low-vibration designs.

The ball bearing is designed for an operating range of between -20 and +120 degrees Celsius. This temperature range is determined by the material properties of the standard rolling-bearing steel and the sheet steel cage. No special modifications are required for applications within this temperature range.

Normal radial bearing clearance refers to the internal operating clearance between the inner ring, outer ring and rolling elements as supplied. It constitutes the standard specification for applications with typical fit selections and a constant operating temperature. This operating clearance is sufficient to accommodate elastic elongation under normal tight-fit conditions without causing harmful stress.

The inner ring, outer ring and balls are made from standard 100Cr6 rolling bearing steel. This material is characterised by high hardness, good wear resistance and excellent dimensional stability under load. Together with the guided sheet steel cage, this results in a robust unit suitable for a wide range of industrial applications.