SPHERICAL DOUBLE-ROW BEARING

摘要

mechanical engineering; instrument engineering. SUBSTANCE: bearing has external and internal races between which rows of solids of rolling are positioned in cage. External and internal surfaces of spherical form are provided on external cup-shaped race. Internal race is made in form of two rigidly connected circular parts with auxiliary spherical rolling surface. External race is arranged between circular parts of internal race. Centre of all spheres is positioned beyond bearing on bearing axis. Depending on construction of instrument or machine external or internal race may be moving and capable of turning around centre of spheres which is combined with instrument mass centre during mounting. Bearing makes it possible to increase axial load and angle of permissible turning of one race with respect to other along any one of three coordinate axes. Use of given bearing in supports of machines and instruments enables decrease of overall dimensions, mass and power consumption of those machines and instruments. EFFECT: enhanced efficiency. 1 cl, 2 dwg