Self-Aligning Ball B. FAG 1311 -K-TVH-C3

The FAG 1311 -K-TVH-C3 self-aligning ball bearing, with a 55 mm tapered bore and C3 clearance, provides targeted compensation for misalignment caused by shaft deflection.

The FAG 1311 -K-TVH-C3 double-row self-aligning ball bearing is designed for bearing arrangements where misalignment or shaft deflection occurs. Thanks to the common hollow spherical raceway in the outer ring, the rolling elements adjust flexibly in the event of misalignment without generating impermissible residual stresses. This rolling bearing has a bore diameter of 55 mm, an outer diameter of 120 mm and a width of 29 mm. Manufactured from standard roller bearing steel 100Cr6 to tolerance class P0/PN or ABEC 1, the open bearing operates within a temperature range of -30 to +120 degrees.

In which installation scenarios does the 1311 self-aligning ball bearing compensate for misalignment?

Its use is particularly recommended in bearing arrangements involving flexible shafts or deflections in the supporting frame. Typical designs in general mechanical engineering include long shaft runs subject predominantly to radial loads, where misalignment of the housing must be reliably compensated for during operation. As the inner ring has two raceways and the outer ring is of the hollow-spherical type, the design automatically compensates for both static and dynamic angular misalignments during operation. As an open bearing, lubrication can be provided directly via the surrounding housing or a lubrication system.

What do ‘tapered bore’ and ‘C3 clearance’ mean for this bearing?

The suffix ‘K’ indicates a tapered bore with a ratio of 1:12. This allows mounting on tapered shaft seats or, using suitable adapter sleeves, on cylindrical shafts, enabling the bearing clearance to be precisely adjusted. The C3 specification indicates a slightly increased radial bearing clearance. This additional clearance compensates for the reduction in clearance caused by the pressing-on of the inner ring and thermal expansion during operation. The dimensionally stable polyamide cage (TVH) guides the balls with low friction and ensures smooth running during continuous operation.