Discuss how spindle bearing installation and matters needing attention

Spindle bearing the correct configuration refers to the combination and bearing type bearing arrangement, before and after different configuration determines the spindle load capacity, speed, stiffness, temperature and service life, now a lot of users are all trouble on how to install machine tool spindle bearings, following by the author to explain for everybody about spindle bearing installation method and points for attention. A, machine tool spindle bearing before installation to prepare 1, tighten rod and putting each other - — It both by threaded connection. 2, clean with gasoline shell inner wall and the spindle coat, in order to avoid impurity installation to enter, cooperate quality influence, then the main shaft jacket size and its shell inner wall to transition fit. 3, 9 to fold the spring due to the machine use for a long time and be full of oily dirt, application of gasoline or kerosene clean, then add butter - — Lithium base grease or calcium base grease, can prolong the service life of folding spring. 4, plus the three pairs of bearing lubricating oil, due to high temperature, so as the lithium base grease or sodium based fat, at the same time to check the centripetal direction of thrust bearing, for type installed back-to-back. Second, the installation of the machine tool spindle bearing method 1, 1) force fit High speed spindle bearing inner ring and shaft tight fit, outer ring and bearing hole is a loose fit, press the bearing to be pressed on the shaft are available, and then put the shaft together with the bearing load bearing hole, when pressed on the bearing inner ring end face, cushion the assembling casing made of a soft metal materials ( Copper or mild steel) , the inner diameter of the casing assembly should be slightly larger than the diameter of a journal, outside diameter than the bearing inner ring guard slightly smaller, in order to avoid pressure in keeping the frame. 2) Bearing outer ring and bearing hole tight fit, inner ring and the shaft is a loose fit, the bearing can be pressed into the bearing hole first, then assembling casing diameter should be slightly less than the diameter of a hole. If the bearing ring and shaft and hole is a tight fit, install indoor ring and outer ring to pressure into the shaft and hole, at the same time assembling casing structure should be able to at the same time, so the bearing inner ring and outer ring end face. 2, heating with 1) By heating bearing or bearing seat, by using thermal expansion will fit into a loose fit installation method. Installation method is a kind of common and energy saving. This method is suitable for interference quantity larger the installation of the high-speed spindle bearings, the bearing before hot charging type or separable bearing ring into the fuel tank 80 - uniform heat 100 ℃, and then loaded on the shaft, as soon as possible out of the oil to prevent inner ring after cooling end face and shoulder joint is not tight, bearing axial fastening again after cooling. 2) Bearing outer ring and light metal bearing seat tight fit, by heating the hot charging method of the bearing, can avoid the mating surface scratch. Heating tank with bearing and should be at a certain distance from the bottom of a mesh, or hanging hooks in the bearing, high speed machine tool main axle bearing is not on the bottom, in case of heavy impurities into the bearing or uneven heating, fuel tank must have a thermometer, strictly control the oil temperature shall not exceed 100 ℃, to prevent hair raw tempering effect, reduce the hardness of the ring. Three, machine tool spindle bearing installation note 1, keep the high speed machine tool spindle bearing and its turnover clean even the eyes can not see the little dust, will also bring bad influence to the bearings. So, keep the surrounding clean, dust from invading bearing. 2, carefully use in use for bearing strong impact, will produce scar and creasing, become the cause of the accident. Severe cases, can crack, fracture, so must pay attention to. 3, using the appropriate tools to avoid operation in the work of the existing bearing to replace, must use the appropriate tools. We often stressed the importance of tools, because there are too many customers using the wrong tool in the installation of the bearing damage. Pay attention to the shaft bearing corrosion. 4, operation of the high-speed spindle bearing, hand sweat will become rusty the original cause. Attention should be paid to operation with clean hands, try to wear gloves. Above is the author explain for everybody about how spindle bearing installation and points for attention of the entire contents of the, I hope you have seen will help, after the installation of the bearing is correct, directly affects the precision of the bearing, performance, service life, so must be in accordance with the operating standards for installation, jiaxing bearing note in the machine tool spindle bearing and other series of bearings for many years, has a perfect after-sales service team, in a timely manner to solve customer's questions, in order to avoid the trouble back at home, welcome to call the advisory. Tags: spindle bearing installation