BASIC MECHANICAL POWER TRANSMISSION DEVICESTypes of Bearings
Double Row Self Aligning Ball Bearings:-
In this type of bearings the track on the outer race is ground spherical
and its this feature which gives these bearings the property of self alignment.
Due to the character of self alignment these bearings are not affected by the
shaft deflection and mounting errors and a shaft deflection up to 4o
is automatically adjusted without damaging the bearings.
These bearings are chiefly designed for carrying radial loads but at the same
time they are capable to carry small thrust load in both directions. Load
carrying capacity of these bearings are slightly less than
that of a single row
deep groove ball bearings of same dimensions