SKF self-aligning ball bearings - Open design, 1211 EKTN9/C3 55x100x21

Bearing series 12, 22, 108, 126, 129. Self-aligning ball bearings feature two rows of balls and a common concave spherical raceway in the outer ring. They are therefore angularly movable and insensitive to angular misalignments of the shaft relative to the housing. They are particularly suitable for bearing conditions where significant shaft deformations or alignment errors are expected. Self-aligning ball bearings also have the lowest friction of all rolling bearings, allowing them to operate more quietly and cooler even at higher speeds.

Main dimensions DIN 630:1993 / DIN 616:2000 / ISO 15:1998

Permissible misalignment:
Bearing series 108, 126, 129: 3°
Bearing series 12, 22: 2.5°

Suffixes:
E - Optimized internal design
K - Tapered bore, taper 1:12
TN9 - Cage made of glass-fiber reinforced polyamide 66, ball-centered
C3 - Radial clearance greater than normal.