FANADE Industry Co.- professional supplier of Fag Thrust Ball Bearing .FANADE Bearing product type involves Deep Groove Ball Bearings,Taper Roller Bearing,Spherical Roller Bearings,Needle Roller Bearing,Angular Contact Ball Bearings,Cylindrical Roller Bearing,Thrust Roller Bearings,we provide all kinds of high quality imported bearing,such as skf,fag,nsk,timken,ina,ntn and so on.Today we talk about Installations of Fag Thrust Ball Bearings.
1.Requirement of Precision bearings for their parts and components
The accuracy of precision Fag Thrust Ball Bearings.itself is less
than 1¦Ìm,and thus high dimensional accuracy and shape accuracy required
in its mating parts ( shafts,bearing housings,end
caps,ring,etc.),especially with the surface to be controlled with
precision rolling bearing the same the level,which is crucial,but also
the most easily overlooked.
Attention must also match the mechanical precision bearings fail if the above requirements,often makes precision bearings error occurs several times larger than the original bearings after installation,or even 10 times more errors,totally not become a precision bearings,because the match machine error member is often not simply superimposed on the error of the rolling bearing,but in the type of amplification by multiple.
2.Matching between Precision Fag Thrust Ball Bearings.
In order to avoid excessive deformation after installation,the following must be done:
(1) Shaft and housing bore roundness and a shoulder block to the verticality of precision bearings according to the respective requirements.
(2) It is necessary to accurately calculate the amount of interference with the rotation of the ring,but also accurately calculate the appropriate amount of fixed rings.
Rotating rings blanch the extent possible; the amount of interference should also get smaller.As long as the effects of thermal expansion and ensure the operating temperature,and the maximum speed under the influence of centrifugal force,so as not to cause a tight fit creeping or sliding surfaces.Fixed according to the work load of the size of the ring and bearing size,select a very small clearance fit or interference fit,too loose or too tight is not conducive to maintaining the exact original shape.
(3) Rolling conditions such as high-speed operation,and higher operating temperature,should pay special attention to rotating rings cannot be too loose to prevent the tie appeared eccentric,and a gap cannot be fixed ferrule to prevent the ferrule deformation under load and vibration excitation.
(4) to take a small fixed ring interference fit condition is to match the shape of the surface of both sides have high accuracy and less roughness,or cause installation difficulties disassembly harder,also need to consider the thermal expansion of the spindle.
(5) the use of pairs of angular contact ball bearing spindle,mostly lighter loads,such as interference with its larger,its internal axial preload amount will be significantly larger,adversely affected.Double row cylindrical roller bearings and tapered roller bearing spindle spindle,its load is relatively large,so its interference with relatively large.
3.The actual method with improved accuracy
In order to improve the accuracy of Fag Thrust Ball Bearings with actual installation,you must not make use of the bearing deformation measurement methods and tools,Fag Thrust Ball Bearings.with bore and outer surface dimensions of the actual precision measurement can be related to inner and outer diameters All measurements shall be measured,and make a comprehensive analysis of the measured data,as a data,precision worthy of the shaft and the bearing seat hole the size of the installation site.In actual measurements made with the appropriate size and geometry of the shaft and housing bore should be done with the measurement Fag Thrust Ball Bearings.under the same temperature conditions.
In order to ensure a higher actual match results,and the surface of the shaft and the bearing seat hole match,the roughness should be as small as possible.
In making the measurement,should be in the outer and inner bore of the bearing and the corresponding surface on the shaft and housing bore,chamfered on both sides close to the assembly,respectively,showing the maximum deviation can be made in the direction of two marks,so that when the actual assembly that matches the maximum deviation of the two parties aligned in the same direction,so that after assembly,to partially offset the deviation between the two sides.
With the purpose of two directional signs,to compensate for the deviation,supports at both ends of rotation accuracy will be improved,and both ends of the seat and the hole between the two Thrust Ball Bearings journal concentricity errors will get partly eliminated.Implementation of measures to strengthen the mating surfaces,such as sand blasting,with a diameter slightly larger than the precision plunger plug a hole,etc.,can help improve the accuracy.
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