Fully spherical tapered roller bearing i.e. spindle ball bearing, for machine tool, has balls supported between inner and outer rings in row, where bearing carries average, free distance between two balls

摘要

The bearing (1) has an inner ring (2) undivided in tracks (5), and balls (4) supported between the inner ring and an outer ring (3) in a row in a cage less and rolling manner. The bearing carries an average, free distance between two balls than 0.4 percentages of a diameter of one of the balls. The tracks for the balls of the inner ring and/or the outer ring (3) are smoothed. The balls are made of metal or ceramic, and are provided with a lubricant.