A, clean, inspect and insulation plate 1, cleaning and inspection of large motor bearing are shipped separately packing, when unpacking the case with lifting eyebolt first remove on tile and tile are well marked with kerosene cleaning, use dry cloth to wipe clean and check whether all the groove, the presence of residual sand casting, tungsten gold layer combined with tile body is bad, in the channel, crack there are sand holes and other dopant, etc.).If can't repair, tungsten gold again.

2, the cleaning and inspection of the bearing housings before installation, also should be checked into a comprehensive cleaning.The bearing inner cavity with a scraper dirt away, a cloth dipped in gasoline or solvent dirt rub-up, watch the crack and sand holes, in order to prevent in operation of oil leakage.Bearing cover and the bearing joint face, bearing and the bearing oil baffle in combination with surface should be crapping to cooperate, and feeler to check the clearance shall not be greater than 0.03 mm.Place and the bottom surface of the bearing also want to clean up, should not have bruising, corrosion and burr.Tighten the screw of the bearing plate and screw are asked him to check, and try to twist screws to check whether too tight or bald buckle.

Between 3 bearing, bearing insulation structure and the floor must be pad with insulation plate or metal gasket, metal gasket used to adjust the horizontal position.To adjust the motor and the coupling of another or mechanical relative position.Metal gasket is made from 0.08 ~ 3 mm metal sheet.The insulation plate is made from or fiber glass cloth laminated sheet made of the laminate.Put insulation plate purpose mainly is to prevent the harm of shaft current.Insulation plate should be than bearing on each side of 5 ~ 10 mm wide, thickness is 3 ~ 10 mm.Besides placed between the bearing and floor insulation plate, at the same time to nail screw and stability should be insulated.Insulation gasket made of 2 ~ 5 mm thick plate glass cloth, its diameter is larger than iron ring diameter 4 ~ 5 mm.And the bearing seat and tubing flange insulation pad is made available for 1 ~ 2 mm thick rubber sheet.Bearing of the insulation after installation should check the insulation resistance, measured with 500 v megohmmeter, its value should not be less than 1 megohm.

Second, the installation of the bearing Whether a single motor bearing and bearing, should be installed in the connection machine main longitudinal axis or longitudinal axis of the unit.Measurement of bearing center is the method of hanging wire and wire hammer check as shown in figure 1 ─ 4.(bearing arc card in a wood, hammer a thin iron bar in the center of the wood, mark center location).

Adjust the position of the shaft were present from the edge of the bearing seat, with a spirit level on the levelness of the bearing surface to check the flat.Using theodolite or level check a few and the plane of the bearing in the same horizontal plane, and the methods of hammer with lines to align the bearing center is on the same axis as shown in figure 1 ─ 5.

According to the above method and the adjustment of the bearing, eliminate the deviation in the process, is applied to the jack type tool to mobile bearing seat, do not have impact, hammered method.This method, is used to adjust the accuracy of the bearing error about within 0.5 ~ 1.0 mm.It should be pointed out: the bearing seat is only prepared to install, adjust even when centering axis in order to achieve consistent requirements.Bearing preset, just tighten bolts evenly (diagonal cycle tight), and nail insulation casing and stability can be temporarily, such as centering work finally finished or put before trial.