Self-Aligning Ball B. FAG 1320 -K-M-C3

The FAG 1320 -K-M-C3 double-row self-aligning ball bearing compensates for misalignment thanks to its hollow-spherical outer ring raceway and measures 100 × 215 × 47 mm.

The 1320 -K-M-C3 self-aligning ball bearing is an open, double-row rolling bearing made from standard rolling-bearing steel (100Cr6) for demanding industrial applications. Thanks to the shared spherical raceway in the outer ring, the two rows of balls automatically adjust to any shaft deflection. FAG manufactures this design with a tapered bore with a 1:12 taper, a robust solid brass cage and an increased radial clearance to tolerance class P0/PN.

What is the 1320 -K-M-C3 self-aligning ball bearing suitable for?

This bearing is primarily used where shafts deflect under load or where misalignment occurs between the bearing housings. Typical applications include shaft mountings in general mechanical engineering where elastic deflections need to be compensated for. As this is an unsealed bearing, designers integrate the component directly into existing oil or grease lubrication systems. The permissible temperature range is between –30 and +150 degrees Celsius.

What is important to consider with a tapered bore and C3 clearance?

The suffix ‘K’ denotes the tapered bore, which is usually mounted directly onto cylindrical shafts using a clamping or withdrawal sleeve. When slid onto the tapered seat, the radial bearing clearance is measurably reduced. The C3 version comes with a slightly increased radial bearing clearance as standard. This reserve serves to compensate for operational heating and the reduction in clearance during the press-fit process. The brass cage guides the rolling elements.