Factors that affect thin-wall bearing friction compatibility

Factors that affect thin-wall bearing friction compatibility source: bearing | last updated: - 2020 11 - 11 factors that affect thin-wall bearing friction compatibility of two axis the diameter of the thin wall bearing on the shaft immediately direct contact with shaft sleeve with avoid adhesion and boundaries RunHua features. Harmful raw material elements of friction pair of friction compatibility mode included: ( 1) In the metallurgical industry will have a auxiliary material of aluminum alloy, coefficient of difficulty levels. （ 2) The appeal of raw materials and lubricants. （ 3) Non RunHua case frictional resistance of secondary raw materials. （ 4) The external economic structure of raw materials. （ 5) The heat transfer of raw materials. （ 6) The size and the characteristics of air oxidation film on the surface of the raw materials. Gasoline pump according to the spray nozzle to high pressure oil to the bearings, the introduction of thin wall bearing oil according to the other end of the bearing oil injection. When bearing at high speed, rotating components and ball bearing also with higher relative rotation rate of the surrounding air. With general RunHua way will be hard to thin wall bearing grease. At this time, be sure to use high pressure Wells will spray into the double row thin wall bearing grease, the nozzle part should be located in the inner hole and the ball bearing management center in the middle. Read this article also saw: thin wall bearing on how to improve the preset clear objective function and the improvement of the thin wall bearing preset limit bearing of ascension. Common objective function is fatigue service life is long, Basic load rating is very big) , damage to the service life is longer, Small oil slick alternated very big) The friction torque is very low. Because of the small office environment regulations bearing application as far as possible, the diameter of the bearing steel ball, interior space is limited to make the inner diameter of the bearing and the diameter of the relatively large axial force and, therefore should take into account the strength of shaft big compressive strength ( Thin thin bearing) Represents the outer and inner hole in large axial force must have a certain alternated. The thick and the diameter of the bearing steel ball and the ball group associated with the diameter of the pitch circle. Because the diameter of the bearing steel ball, half the pitch diameter of ball type group is the independent variable in the relation between the basic load rating. In addition, give full consideration to the provisions of the fatigue damage and bearing is commonly used in the experiments, picked out the improve overall objectives: constraints on the basis of the bearing under rating load is very large. The solution of the design variables in the design of thin wall bearing, the total number of bearing steel ball Z as an integer value of independent variable; Bearing steel ball diameter of Dw in general should be selected based on specification, it is discrete variable. The ball group Dpw pitch diameter for continuous variables. Thus, the reliability design of the bearing is mixed the reliability design of the independent variables. Bearing steel ball diameter of Dw to result harm is very big. The specification standards of the diameter of the bearing steel ball is only five. 0 and 5. 5 mm. Not too much. Thus, in the whole process of ascension, bearing steel ball diameter Dw was conducted on the basis of continuous variables, it is to improve results out of condition. If is not very big difference with parameter values, choose the most close to the parameter values. If the difference is very big, please according to the results of ascension, tailored to the producers. In addition, full of thin wall bearing assembly is also a difficulty. Fully considering bearing tolerance only in 1/2 area, choose in non load bearing area of annular secure channel bottom add filling way of bearing steel ball in the hole. Correction accurately measure and control module type data signals after U, adjust the precise measurement and control module of the larger multiplier to display information relative to the vibration of the offset A ( Lm） 。 If application of instantaneous speed sensors, sensor in theory of power Q to Q = AX3D = vXD = aD ( 10) Among them: D is the working voltage of the instantaneous speed sensors sensitivity, mV/g; V is vibration rate, m/s; A is shaking instantaneous velocity g ( 1 g = 9。 8 m/s2) 。 In the understanding of the sensitivity of the sensor, application ( 10) Measurement and vibration offset, rate and the instantaneous velocity of the three main parameters relativity should power output of the sensor output. Instantaneous velocity instantaneous velocity sensor application main parameters calibration instruments more visual, more easily. To calibration target only accurate measurement and control module, not including sensors. Correction accuracy is the credibility of the sensor sensitivity technical specifications and type data signals and monitoring equipment and precision instruments and equipment. ”