Bearing removal and installation of the same careful. Note do not damage the angular contact ball bearings and other parts, especially interference fit bearing removal operations difficult. So, at the design stage to think ahead to the easy disassembly, designed removal tool is also very important, as needed. Demolition, demolition method of the based on drawings, order, investigation of SKF bearings meet the conditions to ensure foolproof demolition job.
Remove the interference fit of the outer ring in advance on the circumference of the shell sets the extrusion screw with a screw on the outer ring, evenly tighten the screw while removing. These screw holes on the usual cover blind plug, setting several incisions on the housing shoulders, using blocks, press remove, or gently beat the demolition.
Removal of the inner ring, you can use the pressure machinery pulled out new simple. At this time, pay attention to the inner ring to sustain its pullout.
Large demolition of inner ring of the bearing with oil injection. By setting the oil hole oil on the shaft, so easy to pull. Width of angular contact ball bearings the oil injection combined with drawing fixture, the demolition job.
-NU, NJ-type demolition of inner rings of cylindrical roller bearings using induction heating method. Local heating in a short time, drawing method of the post-inner ring expansion.
Demolition of the smaller bearings with adapter sleeves, fastened over bearing inner ring on the shaft, the nut back several times, using blocks with a hammer knocking the demolition.
Large bearings, hydraulic removal easier, oil hole in the taper bore axis pressurization oil in, the inner ring expansion, bearing removal method. In operation, the FAG bearings prolapse may all of a sudden, it is best to use nuts as a block as well.
In the Raceway of angular contact ball bearings or rolling surface, since subjected to alternating loads of exposed surface metal is flaking, and gradually expanded to form pits. If they continue to operate, will form an area of Peel region. Due to improper installation or tilt the housing bore and axle centre line, will make the local area bear larger load in the bearing and early fatigue failure.
Inappropriate materials and heat treatment, combined with the degree of interference is too large, the combination of improper design, such as the seating Groove and cause stress concentration, will form a ring crack and break.
When the external substances into the angular contact ball bearings in the durum and pressure between the rolling elements and raceways, to scroll the surface indentation. In addition, excessive shock loads can also be formed pits local plastic deformation of contact surfaces. When the bearing is stationary, even if the load is small, due to ambient vibration on a Raceway will also form a uniform distribution of potholes.
While NSK bearings are sealed well so that dust or particulate matter entering the bearing, or poor lubrication, abrasion or wear of the contact surface caused by a more serious, and increased bearing vibration and noise.
Current through the bearing, will produce a small electrical discharge, cause small pits or at the contact surface annealing and black highlights. Serious condition will appear in large pits.
Or moisture intrusion bearings, such as acids, alkalis, salts or lubricant improper selection of bearings the reference to corrosion, even if minor corrosion will also allow the bearing end precision bearings.
Angular contact ball bearings, in particular high speed bearings, due to lack of lubricant, the cage and rolling elements or ring contact abrasion, impact, or even keep breaking.