SKF 6220-2Z Metal Shielded Single Row Deep Groove Ball Bearing 100x180x34mm

The SKF 6220-2Z double-shielded deep groove ball bearing provides a robust bearing arrangement for machinery using a 100mm shaft within a 180mm housing bore. Its 34mm width and substantial 62 series cross-section make it suitable for heavily loaded rotating assemblies. The single row deep groove raceways accommodate radial loads together with axial forces in either direction, subject to the bearing's operating limits. SKF catalogue data specifies a basic dynamic load rating of 127kN and a basic static load rating of 93kN, providing key figures for bearing-life calculations and assessment of stationary or peak loading. The bearing has normal (CN) radial internal clearance; applications requiring greater initial clearance should be assessed separately for the C3 variant.

The 2Z designation identifies a pressed steel shield on each side of the bearing. These non-contact shields help retain the factory grease and restrict larger particles, while producing less seal friction than contacting rubber seals. They are not watertight, so equipment exposed to washdown, heavy moisture or fine abrasive contamination may require additional external sealing. SKF lists a reference speed of 7,500rpm and a limiting speed of 3,800rpm for this design; the limiting speed must be considered when evaluating the operating arrangement. During installation, verify housing and shaft tolerances, support the correct bearing ring when applying mounting force and ensure the bearing is not confused with the 6220-2RS1, which uses a different sealing system.

Typical Applications:

Large industrial electric motor assemblies

Industrial gearboxes and mechanical transmissions

Heavy-duty conveyor drive equipment

Pump and process machinery shaft supports

General industrial power transmission systems