JB/T 8567-1997 This standard specifies the calculation method for the rated static load of spherical bearings. This standard applies to the spherical bearing size range specified in the national standard and the radial spherical bearings, angular contact spherical bearings, thrust spherical bearings and rod end spherical bearings that meet the technical conditions specified in the standard. This standard does not apply to spherical bearings with special structures, such as special materials, special sliding contact surfaces, special clearances, etc. JB/T 8567-1997 Rated static load of spherical bearings JB/T8567-1997 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JR/T 8567-1997
Static Load Rating of Joint Bearings
Published on April 15, 1997
Implementation on January 1, 1998
JB/18567-1997
This standard is made by the Ministry of Machinery Industry of the People's Republic of China.
The purpose of this standard is to provide a basis for the calculation of the static load of joint bearings. In view of the current technical requirements of the factory, the core standard cannot provide a basis for the actual calculation method of the manufacturer. Therefore, the situation needs to be discussed with the bearing manufacturer. With the development of bearing technology, the requirements of the bearing industry will not be discussed in this standard. This standard is proposed and issued by the German Mechanical and Electrical Standardization Technical Committee. This standard starts from: Mechanical Industry Standard of the People's Republic of China, and is the new standard of the People's Republic of China for mechanical and electrical industry. This standard specifies the method for calculating the rated static load of spherical bearings. Note that the relevant national standards for bearing sizes and installation pressure and the technical conditions for radial spherical bearings are used, and the relevant thrust spherical bearings and optical bearings are not applicable. This standard does not apply to special joints, special materials, special sliding joints, special swimming bowls, etc. 2 Referenced standards The following standards become the provisions of this standard through citing in the technical standards: At the time of publication, the versions shown are all effective. The standard will be revised in June to make the parties involved in this standard explore the possibility of the following latest version of the standard, G3922-83 for the market bearing
3 definition
This standard adopts GR 3944 to modify the following definition. 3. The load between the bearing and the bearing is zero. 3.2 The radial static load is the load on the bearing when the static stress of the sliding surface of the bearing is zero. 3.3 The static load is the static load on the bearing when the static stress of the sliding surface of the bearing is equal to the static stress limit of the material. 3.4 The radial load caused by the static load is equivalent to the actual load. 3.5 The static load between the shafts causes the working surface contact stress equivalent to the actual load. 3.6 Stress limit test
In the standard, for metal materials, it refers to the limit stress of the crown, and for non-metallic materials, it refers to the limit stress of the ring. 3.7 Self-lubricating bearings
Joint bearings do not need to be lubricated during operation. Such bearings are made of oil-containing materials or have lubricating materials such as ethylene (TTFE) woven fabrics or other composite materials on the working surface. 4 Animal Husbandry No.
: Type of bearings? Medical name, mr1 joints (middle) Figure width
T ：Printed joint shaft cover nominal mass. mm: Joint shaft displacement. nrm
Machinery Industry Department 15904 [5 approved
1998-01 implementation
C Joint bearing rated load, N
: Rated static load. N
C.. Shaft rated static load N
f Rated static load system effect
4. Spherical bearing sliding surface nominal direct pressure. mrF.; Axial static load, N
F =N
Production and economic load N
P, load N
TRadial bearing load coefficient
X.: Contact-free flat equivalent static coefficient Y, push-pull static coefficient
[], material allowable stress limit
Effective contact width of shaft working surface
Je: Integral sets
5 Radial bearing
5.1 Radial static load
JR/T 8567-1997
The general calculation formula for the rated static load of spherical bearings is pGae?
For radial spherical bearings, under normal running conditions, formula (1) can be simplified to: 13bzxz.net
c. = fcd.
In the formula, =4, and the material and structure of the auxiliary bearing are listed in the formula, and the factors related to the radial bearing are listed in the table.
The values ​​of normal structure and value under normal running conditions are listed in the table.
5.2 Equivalent static load between the axial and radial directions
Standard material
Adjustment of PTE material
When the radial joint is actually subjected to radial and axial static load: its radial equivalent load is: F, -- X,F.
The coefficient is positive, and is related to F/F. Table 2 omits the value of X. Table 2 X,
/PTFE joint dynamic
6 Angular contact spherical bearing
(1 Note that the relative load of the first contact joint shaft is: J/T 8507-1997
Gr = -G
The coefficient in Table 2 is effective. Table 3 Angular contact spherical bearing
6.2 Radial static load
Copper/steel
When the radial static load is related to the joint static load between the diameter and the direction, the equivalent load is,,= X, F,
where X is taken from Table 4,
length 4x value
7 Thrust spherical bearing
7.1 Determine the static load of the thrust joint bearing (calculated according to the formula (G): C=SB+C
where the coefficient is from Table 6.
Table 5 extracts the value of the thrust joint bearing
2 Shaft equivalent load
/TTFE machine
.....(6)
Library strictly creates the *
/F second FE fabric
standard rail bearing 2 pull-out radial joint static load when its shaft equivalent static load is = YF.
or the shadow number in the table, and then calculate.
8 Rod end joint bearings
JB/T 8367··1997
The rated static load of rod end joint bearings should be calculated based on the existing supporting bearing configuration. When the rod end joint type is radial, the radial joint auxiliary bearing can be used for calculation. When the end joint is a straight type, the standard formula for calculating the rated static load of the joint axle should be used. The rated static load of the joint axle should be calculated according to the external method. When the shaft static load exceeds the allowable value of the material, the strength limit of the rod end joint can be used as the calculation formula:
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