NTN bearing use material detection to the overheating problem

1 shaft friction compatibility and NTN bearing directly contact, prevent adhesion formation and boundary lubrication performance. The influence of friction factor is the compatibility of materials: ( 1) Vice materials metallurgy to the difficulty of the formation of alloy. ( 2) Materials and lubricants compatible ability. ( 3) Vice materials without lubrication friction coefficient. ( 4) The microstructure of materials. ( 5) Thermal conductivity of materials. 2. In the diameter of the shaft and NTN bearing running-in process, reduce the diameter of the shaft and bearing processing error, alignment error and surface roughness value, make contact even, thereby reducing the friction and wear performance. 3. The corrosion resistance of corrosion resistant materials. Lubricating oil oxidation in the atmosphere will use gradually, produce acidic substances, and in most oil also contains extreme pressure additives, they will weaken the bearing material, therefore, the corrosion resistance of NTN bearing materials. 4 embedding the lubricant in foreign particles pliers and prevent scratches or ( And) Abrasive wear ability. Metal materials, low hardness and low elastic modulus, and embedding, and not necessarily of metal materials, such as carbon graphite, low elastic modulus, but the embedded is not good. NTN bearing is usually form a friction plate with soft material and hard material, usually bearing with soft materials. 5 bearing compressive strength is under load will not be crushed or size doesn't change the ability when the overheat of the NTN bearing, we can according to the specific situation to take the following steps to repair 1, belt tightly tied too tight or coupling assembly bad in a bad state. Here you can adjust the belt tension, calibrated coupling correction for repair. 2, with the shaft and bearing is too tight, or rather too lax. Is too tight when grinding, the too loose should give corresponding shaft set to match. 3, motor bearing cover or both sides of the end cover assembly condition is bad. Repair method is to end cover or NTN bearing cover check mouth tighten the screws, flat, into such measures. 4, it is possible that the bearing lubricating oil quantity too little, appear impurities or oil ring stuck situation. Come on, this is a new oil or repair oil ring. 5, bearing has been damaged, of course, this kind of situation is less, can be replaced according to the general life of bearing. Six, bearing and end cover too tight or too loose. Too tight when processing the bearing chamber, too loose inside the end cover set steel bushing. 7, NTN bearing grease too little or too much or has the impurity such as iron filings. Requires knowledge of a common knowledge is bearing grease has a capacity of not more than 70% of the total volume, apparent magazine can change in time.