Deep Groove Ball Bearings SKF 6312 -2Z

The SKF 6312-2Z deep groove ball bearing, measuring 60x130x31 mm, features sheet metal shields on both sides to protect against dirt particles whilst ensuring low-friction operation.

The 6312-2Z deep-groove ball bearing is a single-row radial ball bearing made from standard rolling-element bearing steel (100Cr6) with a bore of 60 mm, an outer diameter of 130 mm and a width of 31 mm. The manufacturer, SKF, produces this model in the Explorer version with standard radial clearance. The design is primarily intended for the transmission of radial forces, whilst the deep raceway in the inner and outer rings additionally accommodates axial loads in both directions. A robust sheet steel cage guides the rolling elements precisely at operating temperatures ranging from –20 to +120 degrees Celsius.

What is the 6312-2Z deep groove ball bearing suitable for?

This single-row deep-groove ball bearing is suitable for rotating shafts in mechanical engineering applications where radial forces predominate. Designers use the version without a flange or groove on the outer ring for cylindrical housing bores with precise bearing seats. As the bearing can accommodate axial forces in both directions, it can be used either as a fixed bearing or a floating bearing on the shaft. The permissible temperature range is from -20 to +120 degrees Celsius.

What advantages do the -2Z cover plates offer when selecting bearings?

The suffix ‘-2Z’ denotes cover plates mounted on both sides, made from profiled sheet steel. Unlike abiding seals, these gap seals do not come into direct contact with the inner ring. This prevents any additional friction, enabling high speeds with minimal heat generation. The covers keep coarse dust and foreign particles out of the bearing interior and help the lubricant to remain on the rolling elements.