One way bearing for regular inspection maintenance comprehensive check method

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Measuring shaft and bearing hole size, to determine their accuracy and cooperate with each other, and fit for: inner ring and shaft take interference fit, interference quantity 0 ~ + 4 um (light load, high precision 0); Outer and bearing hole should take clearance fit, clearance volume 0 ~ + 6 um (but in the free end bearing use one-way bearing, should increase the clearance); Shaft and seat hole surface roundness error in the following 2 um, bearing the spacing ring face of parallelism in the following 2 um, shoulder inside face foreign face beat in the following 2 um, Bearing hole in shoulder to axis beat in the following four um, Spindle head cover inside end face axis fluctuations should also be in the following four um.roller bearing manufacturers
Fixed end front bearing on the shaft installation location: use clean fuel cleaning bearing, and to test the bottom. For grease lubrication, it will first containing 3% ~ 5% grease organic solvents injection one-way bearing as degreasing cleaning, then oil gun will quantitative grease filling bearing inner (of bearing space about 10% ~ 15%); Heating bearing to twenty ~ 30 ℃, with hydraulic press will bearing load end; The adapter casing pressure on the shaft and with appropriate pressure withstand bearing face make its axial positioning; Will spring balance belt roll in the bearing ring, start torque measuring methods check specified preload have greatly changes (even if the bearing is correct, due to improper fit or keep frame deformation, preload may also change).
We need to bearing - shaft assembly into a hole: heating seat hole that warming and ~ 30 ℃, with the continuous light slow pressure will be one-way bearing - shaft assembly in a hole; Adjust the front cover, make the front cover of the fastening quantity is 0.02 ~ 0.05 um, bearing the face as a benchmark, the meter will dial gauge conflict in the journal on the surface, the shaft rotation measuring the beating for error in the following ten um, Will dial gauge positioning in the shaft, meter conflict backseat hole surface, the shaft rotation in measuring bearing seat hole before and after the proper alignment.