KOYO bearing installation method
 
Bearing the stand or fall of installation or not, will affect the accuracy of the life and the bearing, performance. Therefore, please study fully bearing installation, which contains the following items, please according to the operation of the standard installation KOYO bearing.
 
A, cleaning KOYO bearing and related parts
 
To have the bearing grease lubrication and bilateral with oil seal or dust cover, the sealing ring bearings without cleaning before installation.
 
Second, inspect related part size and finishing
 
Three, installation method
 
KOYO bearing should be installed according to the bearing structure, size and bearing parts with the nature and decide, pressure should be added to a tight fit directly to the ring width, and shall not through transfer roller pressure, KOYO bearing installed generally USES the following methods:
 
A. the pressure with
 
KOYO bearing inner circle is a tight fit axis to make, outer ring and housing is a loose with holes, usable press will be pressed on the shaft bearing first, and then will shaft bearing load bearing together with KOYO hole, and being connected KOYO bearing inner circle in the end, a soft metal mat material of assembly casing (copper or mild steel), assembling the inner diameter of the casing shall be slightly larger than the shaft neck diameter, outer diameter circle of inner diameter than the bearing should be raised edge slightly small, lest the pressure in keep on the shelf. Bearing outer ring and a tight fit bearing hole, inner circle is a loose fit for shaft, can be pressed into the housing first bearing hole, and at this time of the casing pipe diameter assembly should be slightly smaller than the diameter of a hole. If KOYO bearing collar and shaft and a hole is a tight fit, install indoor circle and outer ring will also pressed into the shaft and a hole, the structure of the sleeve assembly should be can at the same time and tight inner ring and outer ring bearings of end.
 
B. heating with
 
Through the heating of bearing or bearing, using thermal expansion will be a tight fit for loose change with installation method. Is a kind of common and energy installation method. This method is suitable for the interference of the large quantities of the bearing installation, before hot charging bearing or separable bearing rings into the fuel tank even heating 80-100 ℃, and then removed from oil to the axes with as soon as possible, to prevent after cooling inner circle and the axial end shoulder joint not tight, bearing after cooling can again axial tighten.
 
Bearing outer ring and light made of metal tight fit the bearing, the heating of the bearing KOYO hot charging method, can avoid face with by scratches. With the fuel tank heating bearing, in a certain distance away from the tank bottom should have a place WangShan, or use hooks hanging bearing, KOYO bearing can't put on the tank bottom, in case the heavy impurity into bearings inside or not even heating, in the tank must have a thermometer, strictly control the oil temperature must not exceed 100 ℃, in order to prevent the occurrence of tempering effect, make the hardness of collar is reduced.
 
C. cone hole bearing installed
Cone hole can be directly into a bearing the design of the shaft neck, or loading and unloading of tight set back the cone of, with reasonable degree of the available KOYO bearing radial clearance reduction is to measure, therefore, before the installation, should measure bearing radial clearance, the installation process often should measure clearance to achieve need clearance reduction is so far, when installation, generally USES the lock nut installation, also can use heating installation method.
 
D. thrust bearing installation
 
Thrust bearing of the thorough and shaft with general for transition cooperate, a circle and the bearing of the hole with general for clearance fit, so the KOYO bearing is easy to install, two-way thrust bearing the axis of the focuser drawtube springs in shaft shall be fixed, in order to prevent the relative to the rotation axis. KOYO bearing installation method, usually is the axis rotation in the majority, so the inner circle of shaft for win with coordination, bearing outer ring and bearing the room with clearance fit for.
 
Four, bearing the check after installation
KOYO bearing removal methods
 
The removal of bearing with installation also carefully. Note no damage to the bearing and the parts, especially with the removal of bearing interference, the operation is difficult. So, in the design phase prior to consider to facilitate the removal, according to need to remove the tool design also is very important. In the disassembly, according to research removal methods, drawing order, the survey of the bearing with conditions, in order to achieve the remove homework correctly.
 
1, the removal of outer ring
Remove interference with the outer lane, in the case of circles set several outer extrusion screw use screws, one side is equal to tighten the screw, part removal. These screw hole common cover blind cork, tapered roller bearing separation type bearings, the crust block shoulders set several incision, use spacers, remove with the press, or the gently remove.
 
2, cylindrical holes of the bearing is removed
The removal of inner circle, can use pressure machinery pull out the latest simple. At this time, it is important that the inner ring bear the pull force.
 
Large bearing the inner circle remove hydraulic method. Through the Settings on the shaft to hydraulic oil hole, in order to make easy to pull out. The width of the bearing is large hydraulic method and pull out and fixture, remove the homework.
NU type fuel outlet, NJ type cylindrical roller bearing the inner circle remove can use induction heating. In a short time, heating local, make the inner circle drawing method of the expansion.
 
3, cone hole of the bearing is removed
Remove the comparison with tight set set small KOYO bearing, use fastening on the shaft gear ring in support of, will turn the nut several times, use pad is beating remove with a hammer.
Large bearings, using hydraulic remove more easy, in the cone hole on the shaft of the oil hole pressure to send oil, making the inner ring inflation, remove KOYO bearing method. The operation, have bearing suddenly emerge may, had better be to use as a file of nuts.




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