Two-way pressure has mounted on ball bearings between the shaft and two outer rings, in the middle ring and outer ring were added between the steel ball, able to withstand the two-way axial load.

The profiles are calculated in such a way that, under normal load conditions, life-reducing edge stresses do not occur at a tilting angle of up to 4' between inner ring and outer ring (Table 5.2).

The limits are valid for bearings before mounting under zero measuring load, and with no axial displacement of one ring relative to the other.