Bearing ball two-row spherical 11309K Kharp (State standard specification 28428-90), international analog - 1310K+H310 (DIN630, ISO).
11309K (GOST 28428-90);
1310K+H310 (DIN630, ISO)
The bearing consists of two holders (internal and external) and bodies of swing (balls) connected by means of a separator.
Bearings are intended for perception of radial loadings, but they can perceive at the same time and bilateral axial loading (up to 20% of size of unused admissible radial). The swing path on an external ring is made spherical. Its such form ensures normal functioning of the bearing even at considerable (to 2... 3 °) distortion of an internal ring rather external.
Bearings of 11000 type with a conic opening are completed with the fixing plug with a nut and intended for installation on cylindrical shaft.