經(jīng)常使用SKF軸承的朋友都知道,SKF軸承安裝的好壞與否,將影響到SKF軸承的精度、壽命和性能。因此,請充分研究SKF軸承的安裝,即請按照包含如下項目在內(nèi)的步驟進行SKF軸承安裝。
Friends who often use SKF bearings know that the installation of SKF bearings will affect the accuracy, life and performance of SKF bearings. Therefore, please fully study the installation of SKF bearings, that is, please follow the steps included in the following items SKF bearing installation.
(一)、清洗SKF軸承及相關(guān)零件((1) cleaning SKF bearings and related parts.)
對已經(jīng)脂潤滑的SKF軸承及雙側(cè)具油封或防塵蓋,密封圈SKF軸承安裝前無需清洗。
For greasy lubricated SKF bearings and bilateral oil seal or dust cover, seal ring SKF bearings need not be cleaned before installation.
?。ǘz查相關(guān)零件的尺寸及精加工情況((two) check the dimensions and finishing of the relevant parts.)
?。ㄈ惭b方法((three) installation method)
SKF軸承的安裝應(yīng)根據(jù)SKF軸承結(jié)構(gòu),尺寸大小和SKF軸承部件的配合性質(zhì)而定,壓力應(yīng)直接加在緊配合得套圈端面上,不得通過滾動體傳遞壓力,SKF軸承安裝一般采用如下方法:
SKF bearings should be installed according to the SKF bearing structure, size and the matching nature of SKF bearing components, the pressure should be directly added to the tightly matched end face of the ring, not through the rolling body to transmit pressure, SKF bearing installation generally adopts the following methods:
A. 壓入配合(press fit)
SKF軸承內(nèi)圈與軸使緊配合,外圈與SKF軸承座孔是較松配合時,可用壓力機將SKF軸承先壓裝在軸上,然后將軸連同SKF軸承一起裝入SKF軸承座孔內(nèi),壓裝時在SKF軸承內(nèi)圈端面上,墊一軟金屬材料做的裝配套管(銅或軟鋼),裝配套管的內(nèi)徑應(yīng)比軸頸直徑略大,外徑直徑應(yīng)比SKF軸承內(nèi)圈擋邊略小,以免壓在保持架上。SKF軸承外圈與SKF軸承座孔緊配合,內(nèi)圈與軸為較松配合時,可將SKF軸承先壓入SKF軸承座孔內(nèi),這時裝配套管的外徑應(yīng)略小于座孔的直徑。如果SKF軸承套圈與軸及座孔都是緊配合時,安裝室內(nèi)圈和外圈要同時壓入軸和座孔,裝配套管的結(jié)構(gòu)應(yīng)能同時押緊SKF軸承內(nèi)圈和外圈的端面。
SKF bearing inner ring and shaft to make tight fit, outer ring and SKF bearing seat hole is loose fit, can be used to press the SKF bearing on the shaft first, and then the shaft together with SKF bearing into SKF bearing seat hole, press installation in SKF bearing inner ring end face, pad a soft metal material made of assembly sleeve (copper or soft steel), assembly sleeve The inner diameter of the tube should be slightly larger than the Journal diameter, and the outer diameter should be slightly smaller than the SKF bearing inner ring flange to avoid pressure on the cage. SKF bearing outer ring and SKF bearing seat hole tight fit, the inner ring and shaft is loose fit, SKF bearing can be pressed into the SKF bearing seat hole first, this fashion supporting pipe should be slightly smaller than the diameter of the seat hole. If the SKF bearing rings are tightly matched with the shaft and seat holes, both the inner and outer rings of the SKF bearing should be pressed into the shaft and seat holes at the same time, and the sleeve structure should be able to tighten the ends of the inner and outer rings of the SKF bearing at the same time.
B.加熱配合( heating fit)
通過加熱SKF軸承或SKF軸承座,利用熱膨脹將緊配合轉(zhuǎn)變?yōu)樗膳浜系陌惭b方法。是一種常用和省力的安裝方法。此法適于過盈量較大的SKF軸承的安裝,熱裝前把SKF軸承或可分離型SKF軸承的套圈放入油箱中均勻加熱80-100℃,然后從油中取出盡快裝到軸上,為防止冷卻后內(nèi)圈端面和軸肩貼合不緊,SKF軸承冷卻后可以再進行軸向緊固。SKF軸承外圈與輕金屬制的SKF軸承座緊配合時,采用加熱SKF軸承座的熱裝方法,可以避免配合面受到擦傷。用油箱加熱SKF軸承時,在距箱底一定距離處應(yīng)有一網(wǎng)柵,或者用鉤子吊著SKF軸承,SKF軸承不能放到箱底上,以防沉雜質(zhì)進入SKF軸承內(nèi)或不均勻的加熱,油箱中必須有溫度計,嚴格控制油溫不得超過100℃,以防止發(fā)生回火效應(yīng),使套圈的硬度降低。
By heating SKF bearing or SKF bearing seat, the tight fit is transformed into loose fit by thermal expansion. It is a common and labor-saving installation method. This method is suitable for the installation of SKF bearings with large interference. The rings of SKF bearings or separable SKF bearings are heated in the tank at 80-100 C before hot-charging, and then removed from the oil and installed on the shaft as soon as possible. In order to prevent the end face of the inner ring and the shoulder from not tightly fitting after cooling, the SKF bearings can be axially fastened after cooling. When the outer ring of SKF bearing is tightly matched with the SKF bearing seat made of light metal, the hot-charging method of heating the SKF bearing seat can avoid scratching of the matching surface. When heating SKF bearings with oil tanks, there should be a grid at a certain distance from the bottom of the tank, or SKF bearings should be hoisted with hooks. SKF bearings can not be placed on the bottom of the tank to prevent sunken impurities from entering the SKF bearings or heating unevenly. Thermometers must be installed in the tank to strictly control the oil temperature not to exceed 100 degrees Celsius to prevent tempering effect. Reduce the hardness of rings.
C.圓錐孔SKF軸承的安裝(Installation of conical hole SKF bearing)
圓錐孔軸承可以直接裝在有錐度的軸頸上,或裝載緊定套和退卸套的錐面上,其配合的松緊程度可用SKF軸承徑向游隙減小量來衡量,因此,安裝前應(yīng)測量SKF軸承徑向游隙,安裝過程中應(yīng)經(jīng)常測量游隙以達到所需要的游隙減小量為止,安裝時一般采用鎖緊螺母安裝,也可采用加熱安裝的方法。
Tapered bore bearings can be mounted directly on a tapered journal or on a tapered surface with a tightening sleeve and a retracting sleeve. The tightness of the fit can be measured by the radial clearance reduction of SKF bearings. Therefore, the radial clearance of SKF bearings should be measured before installation, and the clearance should be measured frequently during installation to achieve the required clearance reduction. Up to now, the installation of lock nut is usually installed, and heating installation can also be used.
D.推力SKF軸承的安裝(Installation of thrust SKF bearings)
推力軸承的周全與軸的配合一般為過渡配合,座圈與SKF軸承座孔的配合一般為間隙配合,因此這種SKF軸承較易安裝,雙向推力SKF軸承的中軸泉應(yīng)在軸上固定,以防止相對于軸轉(zhuǎn)動。SKF軸承的安裝方法,一般情況下是軸旋轉(zhuǎn)的情況居多,因此內(nèi)圈與軸的配合為過贏配合,SKF軸承外圈與SKF軸承室的配合為間隙配合。
The combination of thrust bearing and shaft is usually a transition fit, and the fit of seat ring and SKF bearing seat hole is usually a clearance fit. Therefore, the SKF bearing is easy to install, and the shaft spring of the two-way thrust SKF bearing should be fixed on the shaft to prevent rotation relative to the shaft. Installation method of SKF bearing is usually the case of shaft rotation, so the matching of inner ring and shaft is over-winning, and the matching of SKF bearing outer ring and SKF bearing chamber is clearance matching.
通過加熱SKF軸承或SKF軸承座,利用熱膨脹將緊配合轉(zhuǎn)變?yōu)樗膳浜系陌惭b方法。是一種常用和省力的安裝方法。此法適于過盈量較大的SKF軸承的安裝,熱裝前把SKF軸承或可分離型SKF軸承的套圈放入油箱中均勻加熱80-100℃,然后從油中取出盡快裝到軸上,為防止冷卻后內(nèi)圈端面和軸肩貼合不緊,SKF軸承冷卻后可以再進行軸向緊固。SKF軸承外圈與輕金屬制的SKF軸承座緊配合時,采用加熱SKF軸承座的熱裝方法,可以避免配合面受到擦傷。用油箱加熱SKF軸承時,在距箱底一定距離處應(yīng)有一網(wǎng)柵,或者用鉤子吊著SKF軸承,SKF軸承不能放到箱底上,以防沉雜質(zhì)進入SKF軸承內(nèi)或不均勻的加熱,油箱中必須有溫度計,嚴格控制油溫不得超過100℃,以防止發(fā)生回火效應(yīng),使套圈的硬度降低。
By heating SKF bearing or SKF bearing seat, the tight fit is transformed into loose fit by thermal expansion. It is a common and labor-saving installation method. This method is suitable for the installation of SKF bearings with large interference. The rings of SKF bearings or separable SKF bearings are heated in the tank at 80-100 C before hot-charging, and then removed from the oil and installed on the shaft as soon as possible. In order to prevent the end face of the inner ring and the shoulder from not tightly fitting after cooling, the SKF bearings can be axially fastened after cooling. When the outer ring of SKF bearing is tightly matched with the SKF bearing seat made of light metal, the hot-charging method of heating the SKF bearing seat can avoid scratching of the matching surface. When heating SKF bearings with oil tanks, there should be a grid at a certain distance from the bottom of the tank, or SKF bearings should be hoisted with hooks. SKF bearings can not be placed on the bottom of the tank to prevent sunken impurities from entering the SKF bearings or heating unevenly. Thermometers must be installed in the tank to strictly control the oil temperature not to exceed 100 degrees Celsius to prevent tempering effect. Reduce the hardness of rings.