Self-Aligning Ball B. FAG 1209 -K-TVH-C3

The 1209 -K-TVH-C3 self-aligning ball bearing from FAG Wälzlager has a 45 mm bore, an 85 mm outer diameter and compensates for misalignment during operation.

The double-row self-aligning ball bearing 1209 -K-TVH-C3 is suitable for bearing locations where shaft deflection or misalignment may occur. Thanks to the common hollow spherical raceway in the outer ring, the rolling bearing automatically self-aligns and compensates for angular misalignment during operation. Manufactured from 100Cr6 rolling bearing steel, it ensures high dimensional stability. Designed as an open version, the bearing can be integrated directly into the existing lubrication system of the respective assembly.

In which installation situations does the double-row self-aligning ball bearing compensate for shaft misalignment?

Due to its design, this type of bearing is primarily used in applications where elastic shaft deflection or structural misalignment between the bearing housings needs to be compensated for. Thanks to the two rows of balls, the design primarily transmits radial forces, whilst at the same time guiding the shaft in both axial directions. As the bearing is of open design, lubrication with grease or oil is carried out flexibly via the surrounding housing structure.

What are the advantages of the tapered bore and the C3 clearance?

The suffix ‘K’ denotes a tapered bore with a taper ratio of 1:12 for mounting directly onto a tapered shaft seat or, by means of a collet, onto a cylindrical shaft. As the inner ring expands elastically when pushed on axially, the radial operating clearance is reduced; this is compensated for by the increased C3 bearing clearance. The lightweight TVH polyamide cage dampens dynamic accelerations and is designed for operating temperatures ranging from -30 to +120 degrees.