The main factors influencing the INA linear bearing lifespan

Bearing life in addition to the temperature, clearance, installation method, also is related to the mass of the INA bearing, then there is the operator of proficiency, the last is to use the environment. See here believe we all know that in fact the most important or proficiency, because if is skilled, the installation of the bearings must be correct, you won't get too much or too little linear bearing clearance, installation is not any trouble with the bearing temperature is the sudden rise not, then bearing can steadily run, this time just to pay attention to the environment of use, then the bearing life is long. If is this your first time to install the bearing, be sure to look at the following installation notice: due to the size of the diameter of axle and bearing hole measurement inaccuracy or cooperate with surface roughness, do not meet the standard requirements to cause excessive interference fit, the bearing race is being squeezed from a large, thus reduce the radial clearance of the bearing itself, difficult to rotate the linear bearing, fever, wear or jammed, caused serious bearing inner and outer race in cracking during installation. Not rotating seat clearance or interference is often used not to cooperate, so not rotating seat is likely to produce tiny creep, and make the seat and the contact surface of roller changing, seat ring raceway wear uniform. At the same time also can eliminate axis INA bearings of rolling elements resulting from thermal elongation axial stuck phenomenon. Clearance fit, but too much will make not rotating seat with roller rotation, the axis ( Or bearing hole) And the inner race ( Or the seat) Serious wear and friction bearing heating, vibration occurs. 一个。 Improper assembly method and trunnion bearing or bearing hole of the interference is small, with pressure into the method of assembly. The simplest method is to use copper bar and hammer, according to certain order way symmetry on bearing seat with interference fit, smooth linear bearing pressure. In addition, also can use soft metal casing borrowed hammer into or press press. If improper operation, it will make the seat deformation craze, or a hammer hit the interference fit in the seat, will make the raceway and rolling body produces indirect indentation or INA bearing was damaged. B。 Assembly time when improper temperature control bearing assembly, if its interference with diameter of axle is bigger, generally USES the hot pack assembly. The bearing in cans containing oil, engine oil barrels outside with hot water or flame heating, heating process requirement of the oil temperature control at 80 ℃ ~ 90 ℃, generally will not exceed 100 ℃, most will not exceed 120 ℃. Linear bearing heated rapidly remove the suit on the journal. If improper temperature control heating temperature is too high, the INA bearing causes tempering hardness due to lower, in the operation of the bearing is easy to wear and spalling, and even cracking. C。 Improper assembly clearance adjustment of rolling bearing clearance is divided into radial clearance and axial clearance, its function is to guarantee the normal operation of the rolling body and lubrication and compensating thermal elongation. For bearing clearance can be adjusted, because of its axial gap and radial gap there is a direct proportion relationship between, so the installation is adjust axial clearance can be obtained as long as the radial clearance, but they are usually in pairs ( In the ends of the shaft or end) And, therefore, only need to adjust a bearing axial clearance. Generally, gasket, is used to adjust axial clearance, some screw or thrust ring adjustment is also available. For clearance shall not adjust the INA bearing, because of the radial clearance as defined by the standard in manufacturing has been good, can't adjust, such loading on the diameter of axle bearing or bearing hole, after the actual radial clearance is called assembly radial clearance, assembly time to assemble the size of the radial clearance is right to make necessary work in the operation of radial clearance, to ensure that the flexible bearing rotation. Such linear bearing at work, because the axial thermal elongation during temperature rise and make them seat relative displacement, so as to reduce the bearing radial clearance, even make the rolling body stuck between the inner and outer race. If one of the two bearing roller bearing bearing ( Another bearing fixed on the shaft and bearing seat) Set aside axial clearance between and side cover, can avoid the above phenomenon.