Spherical Roller Bearings SKF 21307 CC

The SKF 21307 CC self-aligning roller bearing, measuring 35x80x21 mm and with a P5 precision rating, offers high load-carrying capacity for angular misalignment.

As a double-row roller bearing, the SKF 21307 CC self-aligning roller bearing accommodates high radial loads as well as combined axial forces. Thanks to the hollow-spherical outer ring raceway, this design automatically compensates for misalignment and shaft deflection during operation. This open roller bearing, made from standard 100Cr6 bearing steel, features a sheet steel cage and, in the SKF Explorer version, is designed for demanding applications. The permissible temperature range is from -30 to +200 degrees.

What is the SKF 21307 CC self-aligning roller bearing suitable for?

This self-aligning roller bearing is particularly recommended for demanding shaft mountings subject to high radial loads, where shaft deflection or misalignment may occur. As the outer ring has no groove or lubrication bore, the lubricant is supplied from the side by design. The open bearing allows for flexible lubricant selection – either grease or industrial oil – tailored to the ambient conditions and the thermal load in the respective unit.

What does the tolerance class with running accuracy P5 mean for the 21307 CC?

With this bearing, the manufacturer combines the standard dimensional accuracy PN with the restricted running accuracy P5. This contributes to low-vibration concentricity on guided shafts, as dimensional deviations and radial runout are reduced. The main dimensions are a 35 mm bore, an 80 mm outer diameter and a 21 mm width. Together with the standard radial bearing clearance, the bearing is suitable for normal operating temperatures and fixed shaft seats.