Bearing four correct disassembly method

The removal of bearing is one of the important content of the mechanical maintenance, remove must be completely comply with the basic rule of bearing disassembly and assembly, and different types of bearings must use different ways to remove the tools and remove.
If the bearings is separable, the bearing ring and roller cage components can be separated from another bearing ring sealed.If need to use bearing again after removal, the force applied in the process of removal may be transmitted by rolling element.
Removing integral type bearing, should first change the clearance fit the bearing ring, interference fit bearing removal need according to its type, size and matching method using different tools.
Remove the installation on the cylindrical trunnion bearing 

1. Cold remove
removing small bearings, can use the right punch tapped the side of the bearing ring, as to be removed from the shaft for a better approach is to use mechanical drawing.Pull should grasp on the bearing inner ring or adjacent parts, if the shaft shoulder and shoulder can hold bearing hole drawing grooves and can simplify the disassembly process.In processing some threaded hole hole shoulder position, can facilitate with bolt bearing out.Large and medium-sized bearings often remove the required force is bigger than remove the tools provided by force.Recommend the use of hydraulic power tools or filling method, or used together.This means that you need oil hole and the groove on the shaft design.
2. Heat remove
Remove the needle roller bearing or NU, NJ and NUP cylindrical roller bearing inner ring, heat removal method is appropriate.
Heat removal there are two types of commonly used heating tools: heating ring and adjustable induction heater.Heating ring made of light alloy has a radial slot, and is equipped with an electrical insulating handle.Usually used to install and disassemble and small and medium-sized bearing inner ring of the same size.If often remove the different diameter of inner ring, can be used to debug the induction heater.The heater can rapid heating inner ring, and doesn't make the shaft gets hot.
Removing large cylindrical roller bearing inner ring, you can use some special fixed induction heater.
3.Remove the installed on the cone type trunnion bearing
Can use mechanical or hydraulic power drawing machine pulls inner ring to unload the small miniature bearing.
Some drawing machine with spring manipulator, with the automatic drawing of ecg design can simplify the program and to avoid damage the shaft neck.If drawing machine claw cannot be used for inner ring, should be through the outer ring or drawing and drawing piece combination remove the bearings.
The removal of large bearing oil can be used more safe and simple, the method at high pressure through oil hole and the groove between the two conical fitting surface into the hydraulic oil.Greatly reduce the friction between two surfaces, and the axial force of the release bearing and the diameter of axle.
Remove the tight sleeve bearing
For installation in tight with straight axis on the small sleeve bearing, you can use a hammer evenly on the bearing inner ring end of small steel pieces, to remove it.Before this, will need to set set of loosen lock nut.By using special sleeve with a hammer percussion set cover lock nut of small end face to remove installed in step a little bearing on the shaft.Before this, needs to be tight sleeve lock nut tighten and loosen the laps.For installation in tight with ladder shaft sleeve bearing, using the hydraulic nut disassembly easier.Must tighten the hydraulic nut, the position of the piston to install the appropriate stop filling method is a more simple way, but must use the set set with oil hole and the groove.
4.Remove the back sleeve bearing
Removing withdrawal on the set of bearing, must remove locking devices (such as lock nut, end plate, etc.).For small and medium-sized bearings, you can use the lock nut, hook spanner or impact wrench to remove.To install on the withdrawal of medium and large bearing, you can use the hydraulic nut to unload them easily.Suggestions on the shaft end behind the hydraulic nut to install a stop.When suddenly withdrawal sleeve separation from the matching position, the locking device can prevent exit set and hydraulic nut flying out from the shaft.

Supplier
BMB Bearings ia a precision bearing enterprise specializing in the production of double row angular contact ball bearings, double row deep groove ball bearings, and single row angular contact ball bearings. The company is a end bearings manufacturer enterprise producing double row angular contact ball bearings in China. Its models cover 3200 series, 3300 series, 3000 series, 3800 series, 3900 series, etc. The product accuracy grades are: P0, P6, P5, P4, and the products are widely applicable.
The company also maintains an extensive inventory of superior roller bearings, ball bearings, Deep Groove Ball Bearings, Selfaligning ball bearing, Angular Contact Ball Bearings, Thrust Ball Bearings and much more.