Self-Aligning Ball B. SKF 2311 K

The SKF 2311 K double-row self-aligning ball bearing with a tapered bore compensates for misalignment and measures 55 × 120 × 43 mm.

The SKF 2311 K self-aligning ball bearing is a double-row rolling bearing made from standard 100Cr6 bearing steel. Thanks to the hollow-spherical outer ring raceway, the ball列 automatically aligns itself, enabling the bearing to compensate for angular misalignment between the shaft and housing. With key dimensions of a 55 mm bore, 120 mm outer diameter and 43 mm width, as well as a sheet steel cage, this open bearing is designed for applications in general mechanical engineering.

In which installation scenarios does the 2311 K self-aligning ball bearing compensate for misalignment?

Design engineers primarily use this self-aligning ball bearing where shaft deflection or misalignment may occur. Typical applications include long shaft runs with separate housing sections in industrial settings. Thanks to its open design without sealing washers, the component is suitable for environments with an external lubricant supply. The component covers a temperature range of -30 to +150 degrees Celsius.

How does the 1:12 tapered bore facilitate assembly?

The suffix ‘K’ denotes a tapered bore with a ratio of 1:12. This design facilitates assembly onto tapered shaft seats or, with the aid of clamping and withdrawal sleeves, onto cylindrical shafts. By axially sliding the inner ring onto the shaft, the standard radial bearing clearance can be precisely adjusted during installation. For both assembly and maintenance, this geometry offers flexibility in shaft connection and simplifies maintenance and disassembly work.