Rolling bearing heating installation method: When the bearing diameter greater than 70mm, or with a larger interference, the use of heating method to make bearing hole expansion, so that the installation of labor-saving and time-saving, but also to avoid excessive force caused by damage. At this point need to control the heating temperature, the general bearing heating to 80 ℃, up to 100 ℃. Enough. More than 120 ℃ will result in bearing tempering phenomenon, resulting in reducing the hardness of the ferrule and reduced accuracy. Commonly used heating methods are: 1, hot plate heating method: the bearings placed at a temperature of 100 ℃ for a few minutes on the hot plate, this method is the most simple, such as flip a few times the bearing can be heated evenly, but also high efficiency, The size of the bearings can use this method. 2, electric furnace heating method: the bearings placed in a closed automatic temperature control electric furnace heating, heating evenly, accurate temperature control, fast heating, suitable for a number of occasions heating a lot of bearings. 3, Induction heating method: The use of induction heater can be fast, reliable and clean bearings heated to the desired temperature, which is particularly suitable for tight fit inner ring occasion, because the heating is only the inner ring, and the outer ring is very hot Less, this can be easier on the shaft, but also easy to fit into the seat hole. 4, the bulb heating method: the use of 50W bulb heating bearings, heating temperature can be guaranteed at about 100 ℃, smaller bearings can be placed directly on the bulb, the larger bearings can be placed in the bulb taper hood, cone hood to prevent Bulb heat loss, and to heat evenly. Taper hood can be adjusted up and down, in a certain range to adapt to the heating of different sizes of bearings. If you use far-infrared light bulbs, pay attention to the bulb direction should be down, so as to avoid infra-red rays is not conducive to human eyes. Imported pump this light bulb can save energy. Bulb heating method is suitable for a small number of occasions to be less frequently; to bearing the occasion of heating, usually light bulb can also be used for lighting, in addition does not require any other equipment. 5, tank heating method: This is a widely used traditional heating method, the tank from the bottom of 50 ~ 70mm at the metal mesh, bearing placed on the Internet, large bearings to be hooked. Bearings should not be placed directly on the bottom of the groove to prevent contact with the bottom of the bearing parts of the local heat is too high, or sinking sediment into the bearing dirt. Oil bath heating method is as follows, you should use good non-corrosive thermal stability of mineral oil, preferably transformer oil, oil and containers should be kept clean. The capacity of the oil tank should be heated bearings and the size and amount of oil may be, if the container is too small, continuous operation, a bearing oil temperature will fall quickly, the effect is not good.
