Self-Aligning Ball B. FAG 2209 -K-TVH-C3

The FAG 2209 -K-TVH-C3 self-aligning ball bearing, with its hollow-spherical outer ring raceway, compensates for misalignment with a shaft diameter of 45 mm.

This double-row self-aligning ball bearing, model 2209 -K-TVH-C3, combines radial load-carrying capacity with angular misalignment compensation. With dimensions of a 45 mm bore, 85 mm outer diameter and 23 mm width, the bearing flexibly absorbs radial forces. The version made from standard rolling-bearing steel 100Cr6 complies with tolerance class P0 (ABEC 1). An integrated polyamide cage guides the rolling elements with low vibration within the approved temperature range of –30 to +120 degrees.

What is the 2209 -K-TVH-C3 self-aligning ball bearing suitable for?

The bearing is used in applications where shafts flex elastically under operational load or where manufacturing-related misalignments occur between the housing seats. Due to the common hollow-spherical raceway of the outer ring, the inner ring, together with the ball cages, tilts without causing excessive edge stresses. Designs featuring long shafts or separate pedestal housings make specific use of this swivelling behaviour. The open component can be lubricated directly via the surrounding housing system.

What do the tapered bore and bearing clearance C3 mean?

The suffix ‘K’ indicates a tapered inner ring bore with a taper ratio of 1:12. This tapered shape allows for direct mounting on tapered shaft journals or, using a suitable adapter sleeve, on smooth cylindrical shafts. The interference fit can be adjusted in a controlled manner by axial sliding. The designation C3 indicates an increased radial clearance compared with standard versions. This additional radial clearance helps to prevent the rolling elements from jamming if the inner ring is expanded during press-fitting or if temperature differences occur during operation.