Designation due to standards:
7311B (DIN628-1, ISO 12044:2014);
46311 (GOST 831-75, USSR).
It consists of two rings (internal and external) and rolling elements (balls). For radial and axial resisrence of load the rings inner contact surface made under angle. Bearing can work at hight radial and axial loads
Bearing type - open (without any seals on both sides)