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Large motor bearing installation


Cleaning, inspection and insulation requirement
One bearing the cleaning and inspection of large motor bearings are individually boxed shipped out of the box after the first screw rings on the tile and under the tile, respectively, remove the well marked and kerosene cleaning with a dry cloth and check all the grooves is clean, with or without casting sand residues, the tungsten layer and the tile body is not good, and to draw the channel, crack existence of trachoma and other do pants). If you can not repair, they have to be linked with the tungsten.
2, bearing cleaning and inspection of bearing installation should be carried out before thorough cleansing of the check. The bearing cavity with a scraper dirt scrape off with a cloth dipped in petrol or solvents dirt wipe, and watch for cracks and trachoma, in order to prevent oil leakage in the operation. Bearing cap and bearing joints, bearing and bearing block oil ring joint surface with the scrape, and checked with a feeler, the clearance shall not be greater than0.03 mm. Placed on the bearing surface of bottom plate have to clean up, there should be no bumps, rust and burrs. Screw fastening bearing and base plate threaded his fine check and try to tighten the screws to check whether too tight or bald buckle.
Bearing insulation between the structure of bearing and base plate must be used to adjust the pad to the insulating plate or metal gasket, metal gasket seat horizontal position. The relative position of the adjustment of the motor and is linked to another motor or machinery. The metal gasket is made ??from 0.08 to 3mm sheet metal. The insulation plate is made ??from cloth laminator glass laminates. Place the insulation plate; the main purpose is to prevent the hazards of the shaft current. Insulation plate is than bearing on each side out of 5~ 10mm, thickness 3 to 10mm. In addition to the insulation plate placed between the bearing and base plate, screws and stable nail should be insulated. Insulating washers made ??of 5 mm thickness of glass fiber cloth boards, the external diameter than iron washer outer diameter of 4 to 5 mm. Tubing disk bearing phase insulation pad available thickness of 1 to 2 mm rubber plate made??. After installation of insulated bearing should be checked to ground insulation resistance, measured with 500 volts merger, its value should be not less than 1




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