A is for bearing with acetylene oxygen directly heating; The other is to small small-sized bearing baptized by oil heating, reach thermal expansion, and expand the bearing diameter to assembly. These methods in long-term equipment maintenance in a wide range of applications, basic meet and solve the problems in equipment maintenance bearing assembly.

The second approach is to ensure that the heating process of bearing the heated area temperature is even, it is difficult to determine. Because the traditional acetylene oxygen is a gas fire heated mouth, and heating process is only by experience, be heat the TIMKEN bearing temperature and how many degrees to the right it is difficult to master. The temperature too high, it will have to bearing of annealing, reduce the mechanical properties of the bearing; Temperature too low, thermal expansion value is not enough, difficult to assembly. In equipment repair, sometimes for TIMKEN bearing of the repairman warm enough,
 
TIMKEN bearing with less than the correct position, was forced to take down to reinstall and thus increasing labor intensity. For this reason, we specially put forward a kind of changing the traditional on the bearing.

1. The electricity heating alternative acetylene oxygen heating. Will the plane furnace design be cylindrical furnace, named for TIMKEN bearing JiaWenQi electricity, according to the different bearing diameter can be designed into different power and specifications of the bearing power JiaWenQi (best applicable range in bearing diameter lower than 300 mm/above). The warming device has the following advantages: thermal radiation uniform and stable, be heating TIMKEN bearing surface have no smoke, clean, clean, easy to measure and control TIMKEN bearing temperature.

2. Using infrared highlighted.it is heating TIMKEN bearing surface of temperature monitoring. Bearing assembly of the heating value at 100 ℃ ~ general control 120 ℃ advisable. In the temperature inside, bearing steel maximum thermal expansion, facilitate TIMKEN bearing assembly, the temperature and won't change the mechanical properties of the bearing, and high reliability.

TIMKEN bearings use should pay attention to the matters
1, the shaft and TIMKEN bearing room tolerances of choices and control: TIMKEN bearing pressure into the bearing should be flexible rotation after no block feeling. If there are obviously not flexible rotation, indicates that the size of the shaft is too big, tolerance to cut. Such as bearing pressure into the shaft with hand after turning have obvious "sasha vujacic" feeling, likely is the tolerance of shaft is too large or shaft roundness is bad. So in control the shaft and TIMKEN bearing room also want to control the tolerance roundness, the home a lot of manufacturers to only tolerance control, no control to roundness.

2, TIMKEN bearing assembly way: for bearing is high precision products, such as assembly not easily on the channel bearing damage, leading to TIMKEN bearing damage. TIMKEN bearing assembly should be in special mold, can't knock at will, in pressure into the shaft only small circle stress, pressure big lap can only big circle stress. When the assembly required by hydraulic pressure or, when pressed in lower die to outside the state level, such as with sloping can lead to TIMKEN bearing the channel for stress damage, but make TIMKEN bearing produces guide ring.

Three, the assembly of foreign bodies from: TIMKEN bearing in fitted to the rotor dynamic balance on when it's very easy to dynamic balance is generated when iron into internal TIMKEN bearing, so it is best to put before bearing dynamic balance. There are some manufacturer to assembly is convenient, assembling TIMKEN bearing in indoor apply some oil or grease lubrication effect, but often it is hard to operating personnel quantity control, if oil or grease at TIMKEN bearing indoor integrated leave more, in TIMKEN bearing drive along the axis easily when they enter TIMKEN bearing internal. TIMKEN bearing room had better be not besmear oil or grease, if be not besmear is not to control shall not in TIMKEN bearing indoor have a product.

4, paint the rust prevention: paint the rust is happens in seal feature
dense type of motor, motor in assembling a good voice, but in warehouses, put some time later, abnormal sound of great change motor, remove the TIMKEN bearing have serious rustiness phenomenon. Before a lot of manufacturers will think is TIMKEN bearing problems, through our continuous publicity, now motor have realized basically is the problem of insulation. The problems mainly because of the volatile acid out insulation in a certain temperature, humidity formed under the corrosive substances, TIMKEN bearing the channel corrosion cause bearing damage. The problem at the moment is to choose good insulation, and after drying ventilation in a period of time after assembly.




Other News:
SKF bearing the detection process after installation
KOYO bearing installation method and bearing removal methods
Steel trading industry to save if first when refused to blind expansion
Replace TIMKEN bearing assembly of the new method
NTN bearing of the installation and removal methods
NSK bearings standard installation method
Slow steel demand endorsement warmed and XianChan refiners
Bearings KOYO before installation of preparation