I have a vibration screen, with NJ428EM bearings, bearings can not be used for a week, the shelf is broken. Change a few sets, this is the case, what is the reason?
With high radial load capacity, especially for heavy load or vibration load, but can not withstand pure axial load. The raceway of the bearing outer race is spherical shape, so the self-aligning performance is good, and the coaxiality error can be compensated. In addition, for the vibration screen bearing large heat, the general use of big clearance.
Vibrating screen bearing roller bearings for general use (split brass cage), automatic aligning around. Spherical roller bearing with two rollers, mainly bear radial load, but also can withstand axial load in either direction.
Such bearings allow the inner ring axis and outer ring axis angle error is very small, only 2 '-4'. Therefore, the machining accuracy of shafts and bearing housings is relatively high. Otherwise, it is easy to appear uneven contact and stress concentration in raceway contact parts.
