For * kind of circumstance, because the expansion coefficient of aluminium times larger than the iron, so, when you are in the installation using the correct fit, after the temperature becomes loose, run laps is produced.
Oil oxidation of organic acid, corrosion and damage to the bearing alloy, diesel engine starting, shall, first of all, to check the oil road unblocked, oil pressure is normal.
Here before this type of generator bearing end cover general grease, after part had melted metal materials, bearing and the temperature of the generator shaft front rise rapidly.
For maintenance should be removed when the wheel, use a screwdriver to pry the dust cover, remove the shaft with forceps spare nuts the lock on the split pin, hand brake drum rotation, with the wheel fixed nut wrench knob, when there is obvious hysteresis and drag friction bearing place, slowly unscrew nuts, immediately until the alignment of a split pin hole, insert a new cotter pin (
It is worth noting: in any case are nut can not be reversed back/circle, otherwise it will cause the wheel hub bearing kuang, leading to early wear)
。
/C—
—
Clearance conform to the standards prescribed by the group, the windage is less than group, forging badly burnt surface morphology such as orange peel, the distribution of small cracks and thick oxide skin.
Gasification burning fat again, & amp;
emsp;
&
emsp;
, therefore, to prevent the fire and collapse, the crew should seize, target-oriented.
Snap ring: if the lubricating oil clean dispersion is not good, after long-term use will produce carbon deposit around the ring, and serious when can cause the piston ring formation stuck or broken.
How to rust resistance, since it is used on the bearing grease, necessary to have the rust resistance of, can help bearing rust prevention work, and good corrosion inhibitor is not soluble in water, so when the choice, is to determine the oil has good adhesion, cambium oil film.
Crack when bearing parts by stress exceeds the ultimate strength of the material, the surface or the inner fracture or local fracture phenomenon occurs, its macroscopic defects is referred to as the crack.
Check whether the surface smoothness and finish of repair meet the use requirements, mechanics teacher said: before installation minutes bearings can be set up!
Bearing installation of the first step is to remove the tyres.
Back-end installation two bearings, the outer ring allows the axial movement, adjustment, bearing cover first not padded, directly on the bearing cover with screw press, with proper clearance in the bearing, axis of rotation handle resistance should be small.
Static load rating definitions and symbols of radial basic rated static load.
In the large load rolling element and raceway contact J column at heart and F juice to calculate the contact stress equivalent radial static load.
