Rodamientos de bolas de contacto de cuatro puntos

Four-point contact ball bearings    This type of bearings is separable bearings. Their contact angles  are same as 35°. When received no load or pure radial load, the steel  balls of the ball bearing contact with the four points of the rings.  When it is received a pure axial load, the steel balls perform a  two-point contact with the ring. In addition, besides the axial load  from both directions, this kindly of bearing can take torque-load as  well.  Angular contact ball bearings have a contact angle so that they can  sustain significant axial loads in one direction together with radial  loads. Furthermore, since an axial component is generated when a radial  load is applied, these bearings are generally used in pairs, triplex  sets, quadruplex sets, or multiplex sets   Four-point contact ball bearings extensively used in:   Machine tool main shafts  Mill grinding wheel shafts  Internal-combustion engine liquid gear boxes  Worm reduction gears  Electric drillers  Centrifugal machines  Pressure boosters