This standard specifies the calculation method of the rated dynamic load and life 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 or working under abnormal conditions, such as special materials, special sliding contact surfaces, special clearances, excessive relative inclination of inner and outer rings, excessive deformation of shafts or seats, etc. JB/T 8565-1997 Rated dynamic load and life of spherical bearings JB/T8565-1997 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JI/T 8565--1997
Spherical Bearing
Rated Dynamic Load and Life
Published on April 15, 1997
Ministry of Machinery Industry of the People's Republic of China
Implementation on January 1, 1998
JB/T8565-1997
The standard is the first time that the standard is used to provide a basis for the calculation of the rated dynamic load and life estimation of spherical bearings, so as to facilitate the application of bearing design. In view of the technical level of ten days ago, the standard is still not enough to estimate the life of specially manufactured bearings. In this case, the standard shall be discussed with the bearing manufacturer. With the development of bearing technology and the improvement of bearing quality, the standard will be revised from time to time. This standard is proposed and managed by the National Standardization Technical Committee of China. The originator of this standard is Luyang Axle Research Institute of the Ministry of Machinery Industry. The main originator of this standard is Yang Chengqi. 1 Scope: Machinery Industry Standard of the People's Republic of China Joint Bearings Rated Dynamic Load and Life This standard specifies the calculation method of joint bearing rated dynamic load and life. JD/T 8565.-[907] This standard specifies the joint bearings of the joint shafts that are not smaller than the national standard and meet the technical requirements of the standard, joint bearings, joint bearings and joint bearings. This standard is not applicable to joint bearings that work under special conditions or abnormal use, special materials, special movable joints, clearance, relative internal and external materials, shaft deformation, etc. 2 Reference Standards The provisions contained in a list of standards shall become the provisions of this standard after being cited in this standard. When this standard is revised, the version shown is valid. All standards will be used. The possibility of using the new version of this standard should be discussed in the following standard. GB394-33 US Section 3924 Vocabulary
3 Definitions
This standard adopts (:B 3924 and the following definitions. 3.1 The radial load when the rated dynamic micro-load of the shaft reaches the maximum allowable stress in the working table. 3.2 The axial rated side load
The working stress in the bearing reaches the maximum allowable stress. 3.3 The total number of working times when the friction coefficient of the bearing reaches the specified limit value or the bearing loss exceeds the specified light energy value. 3.4 When the dynamic load
is constant, under this load condition, the stress level on the working surface of the bearing is affected by the actual standard. 3.5 Equivalent dynamic load
A constant central axial load, under the action of the flow direction. The contact force level of the working surface of the joint bearing is equivalent to the actual load. 3.6 Lubrication of bearings
Joint bearings are not lubricated when working. This is usually sand or self-lubricating materials on the working surface, such as polyethylene (ITFE) or its composite materials:
3.7 Normal operating conditions
Refers to the correct installation of the bearing, normal loading, working at room temperature, good lubrication of the bearing, and no foreign objects invading the bearing 3. Swing angle
joint dynamic change seat on the forbidden inspection diameter joint dynamic correction state extreme resistance reorganization of the central city 3.9 times
shot bearing dynamic ring on Lai·point report moving angle when the swing style. Machinery Industry Ministry 1997-04-15 approved
4: symbol
R joint shop inside (report> nominal width r
center: joint identification bearing outside (seat> nominal width·H, thrust spherical bearing courtyard and information, mm
a. Maximum sliding sphere diameter 3m: driving sphere equivalent diameter
T angular joint shaft nominal width. E
C Joint bearing fixed dynamic load N
C: Joint bearing fixed dynamic load, N
S: Joint bearing shaft rated dynamic load.
f. Bearing rated load factor, N/mir
JB/I 8565.-1057
. Single-phase constant coefficient, /mm
7.. Thrust bearing load coefficient. N/mm
: Joint bearing dynamic load: N
force, nominal contact force, N/mm
F. Minimum load, N
Fn Maximum load. N
F. Axial load. N
F.: Radial load. N
f: Load change frequency, H
: Residual pressure coefficient, N/mm.
G: Coefficient
VII: Joint bearing life, Tip
: Joint bearing type sliding test, Want to reach
Joint vehicle water relubrication belt test
r: Leakage, center
w: Related vehicle sliding speed, mm/s
K: Related to tower auxiliary sealing material
X: Same diameter Equivalent dynamic load coefficient of bearing
X. Equivalent dynamic load coefficient of angular contact bearing
Y.; Equivalent dynamic load coefficient of thrust bearing
\Recommended characteristic life coefficient
Benefit life coefficient
Activity development life coefficient
Characteristic life coefficient
: Bearing disc and lubricant life coefficient
Product: Lubricant life coefficient
: Reagent disposal life effect
Search,
Calculation coefficient
Method for calculating rated dynamic load of spherical bearings
5.1 Centripetal
JBT8565--1997
Concentric bearings can be rated dynamic load (tyr
wherein the coefficient is related to the material, structure, characteristics and other factors of the bearing pair. Table 1 lists the values ​​of F under the condition of micro-clearance value:
Table 1 is the value of F under the condition of micro-clearance value
5.2 The recommended dynamic load C of the joint shaft is:bZxz.net
C. =f.
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