Do ball bearings have seals or guards?

Yes, ball bearings are normally ready with seals or shielding gadgets. The foremost motive of those seals and protecting devices is to prevent pollutants from getting into the indoors of the bearing, thereby extending its provider existence and preserving its top performance.
According to distinct software necessities and environmental conditions, ball bearings can use unique varieties of seals, inclusive of contact seals and non-touch seals. Contact seals are commonly product of metallic or special plastics, that are in close contact with the internal or outer ring of the bearing to save you dust, dirt, and different impurities from coming into the interior of the bearing. Non contact seals, consisting of oil seals, are established at the bearing end face using a lip fashioned ring manufactured from rubber fabric to save you contaminants from getting into the interior of the bearing.
In addition, ball bearings also can be ready with different defensive devices, including bearing covers, dust covers, etc. These shielding devices can correctly save you dirt, dust, and other impurities from coming into the interior of the bearing, whilst additionally preventing the lack of lubricant in the bearing.