What are the commonly Rolling demolition?

1, the outer ring disassembly

Removing interference fit of the outer ring provided on the circumference of the housing in advance several outer ring

1, the outer ring of the demolition

Disassemble the interference fit of the outer ring, prior several outer ring extrusion screw with a screw, side evenly tighten the screw, provided on the circumference of the housing side of the disassembly. These screw holes are usually covered with blind plugs separated type bearings tapered roller NSK Bearings, set in a housing block on the shoulders of several incision, using the pads, with presses demolition, or gently tap demolition

NSK cylindrical bore bearings demolition

The demolition of the inner ring, with pressure mechanical pull out the latest simple. At this point, we should pay attention to the inner ring to withstand its pull.

The large bearing inner ring dismantling the hydraulic method. The shaft hole by setting the hydraulic pressure in order to enable easy drawing. Width bearing hydraulic method and drawing fixtures with the demolition job.

NU type, NJ-type cylindrical roller bearing inner ring disassembly can take advantage of the induction heating method. In a the heating localized within a short period of time, so that the method of drawing in the inner ring after expansion. 3, NSK bearings taper demolition

Demolished relatively small with adapter sleeve bearing to support inner ring, shaft stopper fastening nut back a few times, using the pads with a hammer and beat demolition.

Large bearings, the use of hydraulic demolition easier, in the pressurized oil feed hole in the axis of the tapered bore and the inner ring expansion, and removing the bearing. Operation, the bearing may suddenly emerge, it is best to file blocks to use as well as the nut

4, the operation of the author should be wearing asbestos Cestus prevent burns. Deep groove ball bearings

Punch push bearing task bumpy firmly, without prejudice to the tools and bearings.

Four, heat demolition method

Attention notified: punch should focus on being the axis of the core, not pressure happens.

Second, the pull out method

Percussion force plus normal is bearing inner ring, the percussion force should not be added bearing Gulu body and maintain the shelves, this law is easy easy, but simple damage bearings, bearing diameter bearings located in the end of the shaft, with less than copper rod or other soft non-metallic talent up against the shaft end bearing lower part and pad, to hand hammer slightly percussion, can be removed. Punch manually push the machine or hydraulic punch presses.

Pushed

4 corner puller feet less than 90 °.

3, pay attention to prevention retractor slipping;

Use puller, make the screw for core hole collimation, not tilted. Should also be noted retractors and bearing force status, the retractors and bearing protection;

1, should the inner ring of the the retractors hooked bearing puller, and should not hook on the outer ring, so bearing loose moderate or protection;

Pay attention to notice:

Adoption of specially puller assembly, just shrouded crank bearings will be gradually pulled in. Assembled bearing outer ring, pull with the feet corners should open outward; assembled bearing inner ring, feet should puller card end face of the bearing inner ring. First heated to 100 ° C butter inside and outside oiler pouring bearings are to be demolished, to be bearing ring contraction by summer, you can use the puller bearing puller.

3, and poured oil, to the oiler bumps to pour bearing rings are Gulu body and is below set oil basin, to collect shed hot oil to prevent waste and burns;

Before heating, use asbestos rope or thin iron plate shaft wrapped prevention axis by summer swell, or else it will be difficult to assemble, from bearing housing shell hole assembly bearing, only heating the bearing housing shell hole. bearing impermissible heated;

1, the first, should puller bearing on the device is to be demolished, and imposed will certainly tension;

Pay attention to notice:

Used to assemble the tight cooperation of the bearing.

A percussion method

Gulu bearing assembly approach rarely used: percussion method, pull out, push, hot-split method.