Of bearing heater heat the method has a lot of, entrance bearing heats commonly usedly the method has: The induction heats law, electric heat board heats law, electric stove heats law, bulb heats law, oil groove heats the law. 1, induction heats law: Use inductive heater but fast, reliable and clean ground heats bearing to require temperature to place, this is special agree with inner ring tightens assorted circumstance, because be heated, is inner ring only, and outer lane be heated is very few, can install more easily so go up at the axis, load a Kong Zhong easily also. 2, electric heat board heats law: Place bearing the electric heat that is 100 ℃ in temperature board on a few minutes can, this way is most simple, if retroflexion a few times,can make bearing be heated even, and efficiency is tall also, size bearing can use this method. 3, electric stove heats law: Accuse what bearing park closes automatically heat inside lukewarm electric stove, heat even, accuse Wen Zhun truly, heat fast, comfortable heat at a batch the circumstance of a lot of bearing. 4, bulb heats law: (The bulb that 1) uses 50W heats bearing, can assure to heat temperature is controlled in 100 ℃ , lesser bearing can be put on bulb directly, larger bearing but inside the cone-shaped cover of park bulb, cone-shaped cover can prevent be lost of bulb quantity of heat, make heat even. (Fluctuation of cover of 2) taper is adjustable, can suit inside certain limits heat the bearing of different measurement. (If 3) uses the bulb outside Yuan Gong, notice bulb direction should is down, lest infra-red ray goes against the person's eye. (4) imports pump this kind of bulb but energy-saving. (5) bulb heats the law applies to an amount little and the situation that often does not need; to want to heat to bearing, at ordinary times bulb still can make illume use, do not need any other equipment in addition. 5, oil groove heats law: (1) this is to apply wider tradition to heat method, oil groove is apart from place of 70mm of ～ of bottom 50 to set gauze, on bearing park net, large bearing should use hook trice. (2) bearing is unfavorable and direct put at bottom land, the bearing place that contacts bottom land in case is local be heated is exorbitant, or the contamination that bottom land precipitates enters bearing. (3) oil groove heats the attention of the law should be nodded as follows, should use good without caustic thermal stability mineral oil, had better be transformer oil, oil and container should keep clean. (The capacity of 4) oil groove should be measured with the size of bearing be heatinged and oil and decide, if container is too little, when successive operation, put bearing oil lukewarm can drop very quickly, the result is bad. CNC Milling