Roller bearing is cylindrical, conical or drum-shaped roller for rolling element bearing. Roller bearings are mainly radial cylindrical roller, double row spherical roller, tapered roller and thrust roller and structure type.
2013年8月15日星期四
FAG cylindrical roller bearings how to install
(1) FAG bearing inner ring and the shaft is a tight fit, the outer ring is relatively loose fit with the housing, can be pressed to press the bearings mounted on bearings, and the shaft together with the bearing into the housing, pressing the the end face of the bearing pad assembly of a soft metal material sleeve (copper or soft steel). Assembly casing diameter should be slightly larger than the journal diameter, outer diameter less than the inner diameter of FAG Bearings wall diameter to avoid pressure on the retainer. When a large number of mounting the bearing on the sleeve plus a handle.
FAG bearings installed to make the bearing bore and shaft centerline coincide. Skewed relative to the shaft bearing is not only difficult to install, but will also cause creasing, bending and even make journal bearing inner ring fracture.
In the absence or inability to use the local press, you can use a hammer assembly casing and install tapered bearing Hammering force should be evenly spread to the entire circumference of the bearing ring face, so assembly casing is made by hammering the face should be spherical.
(2) FAG bearing outer ring is a tight fit with the housing bore, the inner ring and the shaft is relatively loose fit, can be pressed into the bearing housing, when the outer diameter of the casing assembly should be slightly smaller than the housing bore.
(3) FAG bearing inner ring and the shaft, the outer ring and shell holes are a tight fit, the assembly casing face should be made simultaneously pressed bearing inner ring face of the ring, or a disc and assembly casing, so that the pressure inside and outside the ring simultaneously transmitted, the bearings are pressed into the shaft and housing. This installation method is particularly suitable for automatically aligning radial spherical bearing installation.
(4) heating installation, the force required to install the bearings and bearing size and amount of interference with the size of that for a large amount of interference, the large bearing commonly used method of thermal loading. Thermal loading before the bearings or bearing rings into the detachable fuel tank or a dedicated heater uniformly heated to 80 ~ 100 ℃ (should not exceed 100 ℃).
Thermal loading bearing requires a skilled operator skills. When the bearing from the heating tank or heater removed, immediately with a clean cloth (not with cotton) wipe the surface of the bearing traces of oil and attachments, and then placed in the mating surface of the front bearing pushed in a single operation to withstand the shaft shoulder position. During the cooling process should always be pushed tight, or tapping with a hammer by assembling the bearing sleeve so try to be. Should be installed slightly rotating FAG bearings, to prevent installation tilt or stuck.
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