NSK bearings with clearance adjustment

Even the eyes can't see the little dust, also can bring bad influence to NSK bearing. So, to stick around, clean the dust from invading bearings. Give bearing intense impact in practice, which will produce scar and creasing, become the cause of the accident. Serious situation, can crack and fracture, so must pay attention to. Prevent to existing work with NSK bearing replacement, must use the appropriate tools. We often stressed the importance of tools, it is because there are too many customers in the device using the wrong tool to form the bearing damage. In the shaft and bearing seat, bearing the request in the radial, axial and tangential direction to three directions such as fixed position. Radial and tangential NSK bearing ring through the positioning of the tight fit of mining is complete, the axial positioning only in a few cases with tight fit; Common USES axial spacing parts, such as end cover and retaining ring could happen on the axial location clearance range. Choose to cooperate should be emphatically pay attention to the following four: ( 1) Bearing ring circumferential surface should have a good bearing and average stress, to reduce the deformation, and may have a bearing on abundant of load-bearing ability. ( 2) Ring in its appearance can't slide along the tangent direction, otherwise it will damage the mating surface. ( 3) Free end bearing necessary to adapt to changing the length of the shaft and bearing hole, namely must have axial position within a certain range can swim. ( 4) Must pay attention to the bearing device and remove the cumbersome, saving time and expenses for the province. NSK bearings operating, hand sweat will become rusty. To pay more attention to operation with clean hands, it is better to try to bring gloves. Bearing is the life of a relationship with the care and maintenance is very important, because it is related to the length of the bearing life, the efficiency of up and down. NSK bearings used by maintaining the good care, will bring many benefits, for example can bring high efficiency of consumption, consumption of fine higher quality products, the maintenance of a few times to delay short-lived life frugal once again for your purchasing cost. 1 adjusting shim method: between bearing cover and housing, end face filled with a set of soft data ( Mild steel or elastic paper) Gasket; When adjustment, not first spacer on bearing end cover, a average to tighten the screws on the bearing end cover, a rotating shaft with the hand, until the rolling element bearing contact with the outer ring and axial internal clearance so far; The measurement of bearing cover and bearing gap between end face, plus the NSK bearings in normal working requirements of axial clearance; This is required to fill in spacer thickness, and then fill in the bearing cover and gasket prepared between bearing end face, finally tighten the screws. 2 adjusting bolt method: press the circle on the bearing's outer ring, pressurized with adjusting bolts; Before the pressure adjustment, the first thing to measure adjustment bolt pitch, then adjust the bolt tightening gradually, until the bearing internal no clearance, and then calculate the adjustment bolt corresponding rotation Angle. For example, pitch to 1. 5 mm, bearing running clearance requirements, then adjust the bolt needs by rotation Angle of 3600 * 0. 15／l. 5 = 360; At this time the adjustment bolt reverse 360, NSK bearings is 0. 5 mm axial clearance, and then use gaskets to be fixed can stop. Adopts smooth fat smooth activities bearing in motion should be smooth change fat after 1500 hours, the amount of oil filling in moderation, because the smooth fat too much or too little will make up the bearing heating, amount to common control in bearing chamber volume 1/2 ~ 2/3 is advisable. However, about the NSK bearings with smooth oil slick, oil should be added to the position of the corresponding rules;