The installation of bearing

Press cooperate bearing inner ring and axis to make tighten cooperate, outer lane and bearing aperture is more loose when cooperating, usable compressor bearing first press fitting is on the axis, load bearing of axial along with bearing together next inside aperture, go up in end panel of bearing inner ring when press fitting, the outfit form a complete set that fills up stuff of one soft metal to do is in charge of (copper or mild steel) , the internal diameter that assembles bushing should compare journal diameter slightly big, external diameter diameter should compare rib of bearing inner ring slightly small, lest be pressed on cage. Bearing outer lane and bearing Kong Jin cooperates, inner ring and axis are more loose when cooperating, can press bearing bearing first inside aperture, the external diameter that assembles bushing at this moment should be less than the diameter of an aperture slightly. If bearing ferrule and axis reach an aperture,be close when cooperating, installation room inner ring and outer lane should be pressed into the axis to mix at the same time an aperture, the structure that assembles bushing should the end panel that at the same time detain tightens bearing inner ring and outer lane. B.

Heat cooperate to pass heat bearing or bearing, use heat to expand will tighten the installation method that cooperates change for the pine. Be a kind commonly used the installation method with save labour. This law is comfortable at interference the installation of larger bearing, may depart bearing before shrinkage fitting model the ferrule of bearing is put into gasoline tank to heat equably 80-100 ℃ , take out from inside oil next install an axis as soon as possible, end panel of the inner ring after cooling to prevent and axial shoulder joint are incompact, can undertake axial tightens solid again after bearing is cooling. The bearing that bearing outer lane and light metal make close when cooperating, use heat bearing shrinkage fitting method, can avoid to cooperate a face to get abrade. Heat with gasoline tank when bearing, in be apart from one's store of valuables certain distance place is due one net bar, perhaps aing string of 1 with hook bearing, bearing cannot be put to one's store of valuables, sink in case foreign matter enters bearing inside or heat inhomogenously, there must be a thermometer in gasoline tank, strict control oil is lukewarm must not exceed 100 ℃ , produce temper effect in order to prevent, make the hardness of ferrule is reduced. C.

The bearing of installation round taper hole of conic aperture bearing can be installed directly go up in the journal that has taper, or lade cover the cone with withdrawal sleeve closely to go up surely, the degree of degree of tightness that its cooperate can reduce a quantity to measure with bearing radial windage, accordingly, bearing radial windage should be measured before installation, till the windage that windage often should measure to need in order to reach place in installing a process reduces an amount, locknut installation is used commonly when installation, also can use heat the method of installation. D.

Of the installation thrust bearing of thrust bearing comprehensive with the axis cooperate to be transition fit commonly, housing washer and bearing of aperture cooperate to be clearance fit commonly, because this kind of bearing is installed more easily, of two-way thrust bearing in axial spring should be secured on the axis, turn in order to prevent at the axis relatively. The installation method of bearing, it is the circumstance that the axis rotates is in the majority usually, because of this inner ring and axis cooperate to win too, of bearing outer lane and bearing room cooperate to be clearance fit. 4, the examination after bearing is installed 5, the accretion of lubricant the horn of nicety of installation high speed of ball bearing of contact of horn of high speed nicety contacts ball bearing, basically use at load lighter high speed rotates circumstance, demand bearing high accuracy, high rotate speed, low temperature promotes low vibration and certain service life. The bearing that often makes main shaft of high speed report didymous installation is used, be inside the crucial form a complete set of main shaft of report of exterior grinder high speed. Main technique index: 1.

Bearing precision index: Exceed GB/307.

　 of 1-94P4 class precision 2.

Index of high speed function: DmN is worth 1.

3~1.

8x106/min 　 　 3.

Service life (average) : Horn of nicety of high speed of ＞ 1500h 　 contacts ball bearing service life and installation to have very big concern, should notice the following item: 1.

Bearing installation should be in without dirt, undertake inside clean room, bearing wants to match through be being chosen meticulously, bearing should be passed with spacer abrade, in maintain inside and outside to encircle the tall premise such as spacer, spacer parallelism should be controlled it is under 1um; 2.

Before bearing is installed, should clean clean, on face of brae of the inner ring when cleaning, hand response is flexible, without backwater feeling, after air, put normal weight fat, if belong to oily mist to lubricate,should put a few oily mist is oily; 3.

Bearing installation should use special tool, get power even, forbidden beat; 4.

Bearing deposits Ying Qingjie ventilated, without corrode gas, relative humidity does not exceed 65% , answer for a long time surely fixed and antirust. The installation that axis of tapered roller bearing, water pump connects bearing one, the installation of bearing: The installation of bearing must undertake below dry, sanitary ambient conditions. The treatment quality of the cooperates shoulder of the surface, protruding end panel that microscope axis and crust answer before installation, groove and join surface. All cooperating linked list face must be cleaned carefully and eliminate burr, raw surface must divide cast clean molding sand. Before bearing is installed, answer to be cleaned clean with benzine or kerosene first, dry hind use, assure good and lubricant, bearing uses fat to lubricate commonly, also can use oil-lubricated. When using fat to lubricate, should choose without foreign matter, fight oxidation, antirust, extremely pressure wait for the grease with superior performance. Grease fill measures the 30%-60% that is bearing and bearing case volume, unfavorable and overmuch. The bearing of biserial tapered roller that takes sealed structure and water pump shaft connect bearing already fill good grease, the user can be used directly, cannot undertake cleaning again. When bearing is installed, must be in of ferrule end panel circumferential on bring to bear on equal pressure, press ferrule, must not use end panel of bearing of direct knock of tool of Zuo first class, lest injure bearing. In interference lesser circumstance falls, bearing ferrule end panel can be pinned with sleeve below normal temperature, the head that use Zuo beats sleeve, press ferrule balancedly through sleeve. If large quantities of quantities are installed when, can use hydraulic press. Pressure fashionable, should assure outer lane end panel and end panel of crust stage shoulder, inner ring end panel and impaction of end panel of axial stage shoulder, not clearance of be patient of. Become when interference is bigger, can use oil bath to heat or inductor heats bearing method will install, heat temperature limits is 80 ℃ - 100 ℃ , highest cannot exceed 120 ℃ . In the meantime, the method with applied nut or proper other tightens solid bearing, direction contracts and make in order to prevent the width after bearing is cooling gap produces between ferrule and axial shoulder. Sheet lists installation of tapered roller bearing to should undertake the adjustment of windage finally. Windage value should be used according to what differ operating mode is specific and affirmatory with assorted interference size. When necessary, should undertake experimenting deciding. Bearing of biserial tapered roller and water pump shaft already adjusted even bearing good windage when leave factory, when installation need not readjust. Spin test should have after bearing is installed, use Yu Xuan runner shaft or bearing case above all, if not have unusual, undertake with motivation bear, low speed runs notting have, inspect locomotive condition to raise rotate speed coming back to spend stage by stage next reach bear, detect noise, vibration and temperature rise, discovery is unusual, should quit movement and check. Locomotive experiment is normal and rear but consign is used. 2, of bearing disassemble: Bearing is torn open when after falling, planning to continue to use, should choose disassemble appropriately tool. Had disassembled be filled with assorted ferrule, can increase pulling force on this ferrule only, do not allow to disassemble through rolling body is delivered absolutely force, roll body and raceway can be pressed otherwise. 3, the use environment of bearing: Choose norms dimension, precision according to using place and use condition and ambient conditions, cooperating appropriate bearing is the premise that assures bearing life and dependability. 1, use place: Tapered roller bearing applies to the associated bear of the radial that bears to be given priority to with radial load and axial, use with two bearing conjugate normally, basically answer active and the around hub at the car, conic gear, poor fast implement, the transmission place such as reducer. 2, allow rotate speed: In installation lubricant and correct, favorable environment falls, 0 what allow to be bearing limited speed.

3-0.

5 times. Below general and normal circumstance, with 0.

The limited speed of 2 times is most appropriate. 3, allow banking angle: Tapered roller bearing does not allow an axis to have relative to crust aperture commonly tilt, if have,tilt, the biggest do not exceed 2 ′ . 4, allow temperature: In the load with bear normal, and lubricant is had high temperature resistant function, and below lubricant and sufficient condition, general bearing allows to be in - 30 ℃ - the job below the environmental temperature of 150 ℃ . CNC Milling