Self-Aligning Ball B. SKF 2217 K

The SKF 2217 K double-row self-aligning ball bearing compensates for misalignment thanks to its hollow-spherical outer ring raceway and features a tapered bore.

The SKF 2217 K self-aligning ball bearing is a double-row rolling bearing with the following main dimensions: 85 mm bore, 150 mm outside diameter and 36 mm width. Thanks to the common spherical raceway in the outer ring, the bearing adjusts to angular misalignment during operation. This allows designs with longer shafts or deflections to accommodate misalignments with low friction. Manufactured from standard roller bearing steel 100Cr6 and fitted with a sheet steel cage, this open bearing is designed for industrial drives.

In which installation situations does the 2217 K self-aligning ball bearing compensate for misalignment?

The 2217 K self-aligning ball bearing is primarily used where elastic shaft deflection or misalignment between bearing seats occurs as a result of operation. Typical applications include bearing arrangements with long shaft spans or housing misalignment. The double-row ball arrangement primarily accommodates radial loads, but also withstands moderate axial forces in both directions. As the bearing is of an open design, it is lubricated directly via an oil or grease supply from the equipment.

What are the special features of the 1:12 tapered bore?

The suffix ‘K’ denotes the tapered inner ring bore with a taper ratio of 1:12. This design facilitates mounting on cylindrical shafts using a clamping or withdrawal sleeve, as well as directly onto tapered shaft seats. Fitters use the axial displacement to set the fixed bearing fit and the desired residual bearing clearance for the standard radial bearing clearance. As no sealing washers are integrated, the rolling bearing covers an operating temperature range of –30 to +150 degrees Celsius, provided the lubricant is suitable for this purpose.