Deep Groove Ball Bearings SKF 6218 -2Z

The SKF 6218-2Z deep groove ball bearing, with main dimensions of 90 × 160 × 30 mm and cover plates on both sides, provides protection against dirt particles.

The 6218-2Z deep groove ball bearing is a single-row rolling bearing from SKF in the Explorer series. With a bore of 90 mm, an outside diameter of 160 mm and a width of 30 mm, this design primarily accommodates radial loads as well as axial forces in both directions. The rings and rolling elements are made of standard roller bearing steel (100Cr6). The dimensional and running accuracy complies with tolerance class P0/PN or ABEC 1. The component is suitable for rotating shafts in industrial machinery and plant engineering.

What loads and mounting conditions can the 6218-2Z deep groove ball bearing handle?

The bearing is designed to withstand combined loads at medium to high speeds. As it is manufactured from standard roller bearing steel (100Cr6), the system can withstand continuous loads. The design, which has no flange or ring groove on the outer ring, allows for direct mounting in cylindrical-bore housings. A robust sheet-steel cage guides the rolling elements precisely and keeps frictional resistance low during rotation.

What protection do the 2Z shields and the standard bearing clearance provide?

The suffix -2Z denotes cover plates made of profiled sheet steel fitted on both sides. These shields keep coarse foreign particles away from the raceway area and minimise grease leakage without generating frictional heat through contact. With normal radial bearing clearance, the component covers the standard operating temperature range from –20 to +120 degrees Celsius. Additional contact seals are advisable if moisture or splash water comes into contact with the bearing housing.