AXIAL SUPPORT FOR SCREW SPINDLE OF FACE ENGINE AND TURBODRILL Russian patent published in 2005 - IPC

FIELD: oil and gas industry.

SUBSTANCE: roller tracks at edge inner and outer rings are made on same side, roller tracks at inner and outer rings are made with possible contact of balls with roller tracks of inner and outer rings at angle, greater than 45°, angle being formed by line, passing through points of contact of balls with roller tracks of inner and outer rings and line, perpendicular to longitudinal axis of bearing, profile of roller tracks on inner and outer rings is made from inequality condition D1 > (D_in + D_out)/2, where D1 - diameter of circle passing through centers of balls in assembled bearing, D_in - inner diameter of inner ring, D_out - outer diameter of outer ring, hardness of inner and outer rings being greater than 48 HRC, application point of radius of roller tracks profile on inner rings is placed in plane of stopping end of inner ring.

EFFECT: higher durability and reliability.

4 dwg