6204Z

6204Z is a standard deep groove ball bearing in the 6200 series. It features a bore diameter of 20 millimeters, an outer diameter of 47 millimeters, and a width of 14 millimeters. The suffix Z indicates that the bearing has metal shields on both sides, providing basic protection against dust and debris without a full seal.

Construction and materials typically involve chrome alloy steel for the races and balls, with an inner ring, outer ring, and a steel cage. The bearing is usually pre-lubricated with a light grease or oil and designed for moderate to high radial loads with some ability to accommodate axial loads when used in pairs or with end supports.

Applications for the 6204Z are common in small machinery and equipment where a compact, robust radial bearing is needed. Typical uses include electric motors, fans, pumps, gearboxes, home appliances, and various power tools or hobby projects. The bearing is suited for moderate speeds and environments where dust exposure is limited but sealing is not required.

Maintenance and replacement considerations include monitoring for signs of wear, noise, or excessive play. Because 6204Z has shields rather than full seals, it is not completely dust-tight; if a higher level of sealing is required, variants such as 6204ZZ (dual shield) or 6204RS (rubber-sealed) may be chosen. Bearings should be replaced rather than reused if damaged, and proper mounting techniques should be followed to avoid misalignment or edge loading.

See also: 6200 series bearings, bearing suffix designations.