NSK bearings using common problems and the installation method

NSK bearings in the process of running, the failure is common, so don't make a fuss. Failure judgment and treatment are very important. Today, we explain the removal of common problems and bearing means. 1. NSK bearing temperature in operation, the installation of the bearing parts, allowing a certain temperature, when touching the fuselage shell, should not feel hot normal, and vice versa, bearing temperature. NSK bearing temperature: product quality does not conform to the requirements or metamorphism, oil viscosity is too high; Body assembly too tight, The space is insufficient) ; Bearing assembly too tight, the shaft on the bearing ring or rotating case, too much load NSK bearing cage or pieces of the body, etc. 2. NSK bearings NSK bearing noise allow a slight noise in operation, if the noise is too large or unusual noise or collapse, then NSK bearing failure. NSK bearing noise is more complicated reasons, one is the wear and tear the surface of the bearing inner and outer ring. NSK bearings due to the wear and tear, and the shell, the relationship between the bearing and shaft sleeve damage, leading to deviate from the correct location on the axis of the shaft of the sound. When the bearing fatigue, sheet metal surface, but will also increase the NSK bearing radial clearance to produce sound. NSK bearing lubrication is insufficient, in addition, the formation of dry friction, and the voice of the bearing will be broken. NSK bearing wear loose, loose cage damaged, there are sound. NSK bearings NSK bearing and shaft sleeve installation method is general, seats, NSK bearing hole clearance fit transition commonly, two-way thrust bearing ring should be fixed on the shaft, to prevent the relative to the axis of rotation. NSK bearings installation method, under normal circumstances, in most cases axis, so the inner ring and shaft woo, NSK bearings and bearing clearance fit outhouse. NSK bearings installed, you should check the ring and shaft sleeve centerline axis vertical. Dial gauge fixed on the tanks, NSK bearings will face touching, above the axis of rotation of the bearing raceway header, at the same time observe the dial gauge pointer, if the pointer deflection, ring and the axis of the shaft sleeve is not vertical centerline. Box shell hole deep, also can use the extension of dial instrument. NSK bearings for proper installation, seat can automatically adapt to the body, to ensure that the agency is located at rolling up and down. If installed backwards, NSK bearings not only don't work, and cooperate with the surface will be badly worn. Because of the difference of bearing seat ring and ring is not very clear, the convention should be careful, don't make a mistake. In addition, the bearing race and a hole between 0. 2 - 0. 5 mm gap, to compensate for the machining of the parts, installation errors caused by inaccurate, NSK bearing ring operation center migration, this space, in order to ensure the automatic adjustment, avoid contact with friction. NSK bearings, otherwise, will cause serious harm.