SKF Self-aligning ball bearings

SKF self-aligning ball bearings - open design, 1205 ETN9 25 x 52 x 15

Bearing series 12, 22, 108, 126, 129. Self-aligning ball bearings have two rows of balls and a common concave sphered raceway in the outer ring. They are moveable angularly and insensitive to angular misalignments of the shaft relative to the housing. This makes them particularly suitable for bearing situations where large shaft deflections or alignment errors can be expected. Self-aligning ball bearings also have the lowest friction of any rolling-contact bearings, allowing them to run 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 - Optimised internal construction
K - Tapered bore, taper 1:12
TN9 - Cage made of glass fibre-reinforced polyamide 66, ball-centred
C3 - Radial internal clearance greater than normal.