Intuitive graphical device in 4 different position of bearing removal method and matters needing attention to

The removal of bearing is one of the important content of mechanical maintenance. Remove must comply with the bearing dismantling the fundamental rules, but also different bearing according to the different way to remove the tools and remove. If bearing after remove the demand again use, remove the applied force is absolutely cannot transfer after rolling body. About bearing separation, and insist on roller frame components together in the bearing ring can remove separately with another bearing ring. And removing the separation type of bearing, should put in clearance fit bearing ring off, remove the interference fit bearing, according to the demand, type, size, and cooperate way, using different tools. Remove the device on a cylinder of diameter of axle bearing 1) Cold remove figure 1 remove smaller bearings, but after appropriate punch, quietly on the side of the bearing ring with to be removed from the shaft for a better way is to use mechanical drawing ( FIG. 1) 。 Pull catch should be on the inner ring or adjacent components. If the shaft shoulder and shoulder reserved bearing hole tolerance drawing machine catch grooves, can simplify the disassembly process. In addition, the location of the shoulder in the hole processing some threaded hole, easy to bolt out the bearing ( FIG. 2) 。 Figure 2 large and medium-sized bearing force than usually required for machine tools can provide more. Thus, the initiative, by applying the method of hydraulic power tools or oil use or both. This means that the demand is designed on the shaft oil hole and the groove ( Figure 3) 。 Figure 32) Heat remove remove the needle roller bearing or NU, NJ, and NUP type cylindrical roller bearing inner ring, appropriate use of heat removal method. Commonly used tools for heating: the heating ring and adjustable induction heater. Heating ring is typically used for device and remove with the same size of small and medium-sized bearing inner ring. Heating ring made of light alloy. Heating ring with the radial slot, and equipped with electrical insulating handle ( Figure 4) 。 Figure 4 if often remove the different diameter of inner ring, the initiative to use adjustable induction heater. The heater ( FIG. 5) Can heat the inner ring, and doesn't make the shaft gets hot. Remove the large cylindrical roller bearing inner ring, to be able to use some special type induction heater. Figure 52 remove the device on the conical trunnion bearing can use mechanical or hydraulic power drawing pull inner ring, can remove the small bearings. Some drawing machine is equipped with spring manipulator, use this with each other since the design drawing, can simplify procedure, prevent damage journal. If not, use pull extractor claw circle, should through the outer ring, or adopt the way of drawing machine separation drawing piece remove bearing ( Figure 6) 。 Figure 6, by applying the method of filling the removal of large bearing will be more safe and simple. This way at high pressure through oil hole and the groove to hydraulic oil injection between the two conical fitting surface. Sharply reduce the friction between two appearance, and make separate axial force bearing and the diameter of axle. Remove the set on a set of bearing in the set of device with straight on the small shaft bearings, can use a hammer to knock the average effect on the bearing inner ring end face of small steel pieces to remove ( Figure 7) 。 Before that, the demand will set set of lock nut loosen several times. Figure 7 device in tight match on the small ladder shaft bearing sleeve, can use a hammer through a special socket percussion set set of small face to remove lock nut ( Figure 8) 。 Before that, the demand will set set of lock nut loosen several times. Figure 8 on the device on the tight sleeve with ladder shaft bearing, using the hydraulic nut bearing removal more cumbersome. This required in close to the hydraulic nut piston of the location of the device is suitable for installation (stop Figure 9) , oil injection method is more simple and easy method, but must use a set oil hole and the groove. Figure 94 remove retreat on the sleeve bearing remove back the bearing on the sleeve, must remove lock installation. （ Such as a lock nut, end plate, etc. ) About the small and medium-sized bearings, able to apply the lock nut and hook spanner or stop impact wrench to remove ( Figure 10. ) 。 Figure 10 about the device on the withdrawal of large bearings, can be used easily remove the hydraulic nut. Behind the initiative hydraulic nut on the shaft end device stop installation. The stop to install to avoid withdrawal of sudden departure from the fit position, hydraulic nut on the shaft sleeve and fly back out.