在精密机械中,许多传动轴和主轴的支撑需采用成对双联轴承。对成对轴承的精度要求,除其本身精度等级外,主要是控制成对的两套轴承的内、外径尺寸公差带δd和δD,以保证轴承装配精度,同时加预负荷,提高整套组合轴承的刚性、旋转精度以及承载能力。 采用成对双联轴承,可以直接选 In precision machinery, many driveshafts and spindles are supported in pairs of twin bearings. The accuracy requirements of pairs of bearings, in addition to their own accuracy level, the main control is the pair of two sets of bearings, the inner and outer diameter tolerances δd and δD, in order to ensure the bearing assembly accuracy, plus pre-load, improve the package Bearing rigidity, rotation accuracy and bearing capacity. Double pairs of bearings, can be selected directly