1.Bearing oil dry, too little lubricant. Bearings should be cleaned and inject new lubricants.

    2. The motor bearing leakage Too much oil. General lubricating oil added to two-thirds of the bearing chamber.

    3. The belt tension is too tight or the coupling assembly is not in the same line. At this time turning the rotor, to check the belt tension, coupling connection with the case, and make the appropriate adjustments.

    4. Bearing Indoor impurities or iron filings and other objects. Available the iron bar or a screwdriver on the bearing cap with ear to listen, bearing operation noises should be immediately stopped cleaning bearings.

    5. The bearing has been damaged. May be replaced with new models bearing.

    6. Cover and base of different heart turn up very tight. Should check the concentricity of the end cap and repair.