对内圈可分离的NNU49系列轴承，一般在内圈装上主轴后再作滚道的精加工，以获得高的主轴旋转精度。
NNU49 series of separable inner ring bearings, usually installed in the inner ring raceway spindle for finishing and then to obtain a high precision spindle.
对内圈可分离的NNU49系列轴承，一般在内圈装上主轴后再作滚道的精加工，以获得高的主轴旋转精度。
NNU49 series of separable inner ring bearings, usually installed in the inner ring raceway spindle for finishing and then to obtain a high precision spindle.
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