1. use copper rods and hand-Chung-click install
This is an easy way to install small and medium bearing. When the SKF bearing inner ring for tight fit, when for a loose fit in the outer ring, copper rod and keep abreast of the bearing inner ring side face, using percussion and hammers directly copper rods, transmission over copper rod and bearings was mounted on the shaft. The bearing inner ring is large, the available copper rod evenly around the bearing inner ring side face rap, should not only strike the side or too much force, symmetric knock, knock, slowly gently loaded on, so as not to put slice split bearings.
When the SKF bearing outer ring for tight fit, when the inner circle is a loose fit, can be used in a way contrary to the above, every passenger steamship hit keep abreast of the bearing outer ring side face of copper rod, press the bearing into the housing, and finally mounted on the shaft, this law is not easy to damage parts.
2. use sleeve installation
This method and uses of copper rod install the SKF bearing the same reason. It is a socket directly on the bearing surface (pressure when the bearing on the shaft end face of the inner ring; in a shell hole pressure meter 6 outer ring side face), by every passenger steamship hit force evenly installation of bearing rings on the face as a whole, and can be used with the press to install saving time and reliable quality.
Install the sleeve should be used for soft metal (copper or mild steel tubular pipe). When bearings are mounted on the shaft, sleeve inside diameter should be slightly larger than the journal 1-4mm, outside diameter slightly smaller than the diameter of the bearing inner ring flange, or thickness of the sleeve shall prevail, its thickness should be made equal to the SKF bearing inner ring thickness 2/3-4/5, and both ends of the sleeve should be flat and perpendicular to the cylinder body. If the bearings are mounted here at the hole, sleeve outside diameter slightly smaller than the bearing outer diameter.
When installing the bearing sleeves, little parts, placed in a vise may be fitted. Jaw pads with copper or aluminum to prevent axis is pinching. As part a larger size should always be installed on a wooden frame. SKF first mount the bearing on the shaft, then install the sleeve, every passenger steamship percussion sleeve evenly loaded slowly. When the sleeve side gaiweiping at the top, every passenger steamship along its circumference evenly in turn tap sets.
If bearing of within, and outer ring and axis and bearing block hole are for tight tie Shi, can will sleeve of end end surface made double ring, or with single ring sleeve Xia plus disc installed bearing, installed Shi, will double ring sleeve or disc close to bearing within, and outer ring end surface, with pressure machine pressure proceed hammer percussion, to bearing pressure to axis Shang and bearing block hole in the. This way, you can avoid installing cage injuries. This installation method is only suitable for cage not projecting ring end bearing.
3. press Setup
This method is used together with the installation sleeve, bags of every passenger steamship under pressure. Characterized by the SKF bearings without percussion, go with bearing seal parts are not damaged.
When installing the bearings press, press machine Rod centre line coincides with the centerline of the sleeve and the bearing so that the pressure in the Center to prevent installing skew fractured bearing.
4. heating installation
SKF bearings for mounting larger amounts of interference, or large-size bearings, for ease of installation, using the principle of expansion and contraction, copper rods, sleeves for bearings after heating installed and every passenger steamship. Heating methods such as in the second section of this chapter on the bearing and the housing described in the shell hole heating, temperatures generally below the 100 ℃, 80-90 ¡æ more appropriate. When the temperature is too high, causing the bearing Raceway and the rolling annealing, affect the hardness and wear resistance, leading to reduced life expectancy of bearings and premature scrapping.
When mounting bearings use heating, oil temperature reaches the specified temperature for 10 minutes, we should promptly to remove the bearing from the oil, serve the mounted on the shaft. If necessary, install tools available with a little bit of pressure on the bearing inner ring side face, it may be easier to install. After the bearing on the shaft must be pressed immediately, until cooled.