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JB/T 50093-1997 Rolling bearing life and reliability test evaluation method

Basic Information

Standard ID: JB/T 50093-1997

Standard Name: Rolling bearing life and reliability test evaluation method

Chinese Name: 滚动轴承 寿命及可靠性试验评定方法

Standard category:Machinery Industry Standard (JB)

state:in force

Date of Release1997-06-20

Date of Implementation:1998-01-01

standard classification number

Standard Classification Number:Machinery>>General Parts>>J11 Rolling Bearing

associated standards

alternative situation:JB/CQ 37-1991

Publication information

publishing house:Mechanical Industry Press

Publication date:1998-01-01

other information

drafter:Zhang Hongyou, Shan Fubing

Drafting unit:Luoyang Bearing Research Institute of the Ministry of Machinery Industry

Focal point unit:National Technical Committee for Rolling Bearing Standardization

Proposing unit:National Technical Committee for Rolling Bearing Standardization

Publishing department:State Machinery Industry Bureau

Introduction to standards:

This standard specifies the test and evaluation methods for the basic rated life and reliability of rolling bearings. This standard is applicable to the acceptance of subscribers who have requirements for the life reliability of rolling bearings. This standard is also applicable to the assessment and evaluation of the bearing industry and the internal assessment and evaluation of manufacturers. JB/T 50093-1997 Test and evaluation methods for the life and reliability of rolling bearings JB/T50093-1997 Standard download decompression password: www.bzxz.net

Some standard content:

Mechanical Industry Standard of the People's Republic of China
JB/T50093—1997
Rolling Bearing
Life and Reliability Test Evaluation Method
(Internal Use)
Published on 1997-06-20
Ministry of Machinery Industry of the People's Republic of China
Implemented on 1998-01-01
JB/T50093-1997
This standard is a revision of /Q3-91, mainly setting the test risk and judgment method, and supplementing the evaluation method of parameter diagram estimation and reliability estimation. As an industry standard, it is issued for the second time: This standard was proposed and coordinated by the National Bearing Standardization Technical Committee, and the unit that initiated this standard was Luoyang Nacheng Development and Reform Commission of the Ministry of Machinery Industry. The main drafters of this standard are Zhang Rangai and Dan Xianbing. Scope
Machinery Industry Standard of the People's Republic of China
Rolling Bearings
Life and Reliability Test and Evaluation Methods
(Internal Use)
This standard specifies the life and reliability test and evaluation methods for rolling bearings. This standard may be used for the acceptance of rolling bearings with extended life and reliability requirements. This standard is used for the assessment and modification of bearings in the bearing industry. 2 Reference Standards
JB/T50093—1997
The following standards contain clauses that become the text of this standard through reference in the standard. When this standard is published, the versions shown are not valid. All standards will be effective. All parties using this standard should consider the possibility of using the latest version of the following standards. G/T 807.3-1933
GB/T63911995
3 Definition of symbols
! : dynamic life, hwww.bzxz.net
: basic life,
Technical rules for rolling bearings
New actual load and life of rolling bearings L; basic frequency life test compensation, h
I.: estimated value of half mean life of the tested bearing, h1.; actual life of the first axis expressed in test time, hK: opening ratio, K=
R: adjustable range, R=, when -, R
R, each L corresponding L time leaf case virtual test value,: book length division slope, said life data mean height respect degree V: book in the public to be charged certificate
T, flash test time!
The first: The sum of the effective time of each bearing and the starting time of each test is divided by the above quotient of your L as the bearing test time
5,
, the number of sets of unique sets tested on the machine at the same time is %: the quality system. Related to the quality of the bearing, the acceptance threshold coefficient
&·The absolute threshold coefficient
: the quality risk or the sub-quality trust store
: the supervision risk
The Ministry of Machinery Industry approved it on June 2, 1997| |tt||1998-01-01 implementation
): Failure rate, )
1 Basic requirements
JH/50093-199T
4.E You should make B307.3 The small dig GB5391 prediction should not be less than 3.304.2 Evaluation of product batch life reliability level 4.2.1 According to the required lower value, determine the threshold, check and judge the quality of the product batch life. 4.2.2 The actual quality level achieved during the recent adjustment period should be K value. 4.2.3 The value achieved by the test is evaluated based on the value achieved, and the ratio of the corresponding risks in Table 3 is estimated and the parameters and V-day chart are released. 4..5 Non-test time,
5 Test regulations
Three.1 For the treatment of system components, test preparation, excessive test, trial production bearing failure analysis should be derived from the relevant long-term standards, 2 for the test can be found in the main product of the responsibility such as equipment, human factors, external factors, etc., detailed product method, personnel planning and inspection data,
5.3 test * with intentional station test sequence inspection. According to the failure source control time of 0 times, when there is a 5-width bearing failure mode, and make a stop and center demarcation conclusion. In the test trap, the failure rate and the point set of the replacement set and the special installation are specified. 5.4 The value of the joint, a share, not less than, the inspection cycle is short, and the six-generation test equipment can be added. The test drive method can be used to maintain the appropriateness.
6 inspection judgment main diamond number
1 is to come: Chengchengyi 1.C5. Adjust the heart full book 2-16.2 book line East learning new rate: 2#
look at 3 inspection water: stock order door acceptance return water 12. Industry grade Cong level 2 or 3 production! The internal front acceptance return level is 3 or, as shown in the table [
stable inspection film determination basis
7 and the value ratio table in the formula
inspection times small level
, (.) (a shot acceptance time acceptance threshold, main one 0-,,) the first axis ice effectiveness Wang rejection Yan lead limit. -(/F)
In practice, the LK
determination calculation format is as follows:
.10526
7 2 2Formally
When..Qualified
, unqualified
JB/T 50093-J997
Table and the corresponding threshold coefficient are directly
When, continue to try.
Beside: =5
When TT\Close
When—T—Unqualified.
Judgment process and judgment examples
8.1 Product Hall
1 Determine the parameters: Z, K, E and calibration water;
According to the total allowable compensation of the industry
According to the quality according to the actual production efficiency to determine the required standard length: K length,
Table 3 K and R for low
8, 2 Rock example
Example 1, ten minutes coin 30208, according to the length -1. Rush water 112 children, 1oh-1iT ivix(i535
TE/-23p+ 1th8/r.
The output and its layout are:
3 ac-l
JB/T50093199
When -130h, -150=1837, inside: continue. When -100 and the bearing must be replaced, then T(+>6=23, continue the test. When L, -364b,,==6915>u, stop the test. It is determined that the approved product has met the requirements of index K×1. Change table 3 to get scale +0.90 Example 2: 6206 bearing: dial K2, test level 2. F.-12 test, due to z = 1.C5, take L: = 100h. = 2 × 1.05xJoct.
r:.—1661.
Fe: = 161
cut out and: H defined format is:
When the test reaches 159b, the light headless bearing stops, because T. = 2 = 159* = 2CC5: qualified stop test. ¥ The life of this batch of auxiliary bearings has reached 1 index K-2 Standard requirements, and R-0. S6,9 comparison test
responsible party to know the actual life of the production batch, can use the judgment sequence of the 8th order, through trial calculation to estimate. Different products can also be compared.
found that the two stations in China and B produced e2c5 axis hands, with L=72h, positive=20, test level 2 for comparison test, factory production station 50%b, 1 set of film effectiveness, the remaining 13 sets all passed 5511: B at 4271 and 503 1. 1 failed each, the remaining 18 all passed 5501. The test was compared with the R of the two factories.
factory A, =, 105 h. L, = 550 h
Z: = 427h. L-503h#L=550h
trial = 15
21. = 3044 m
g:=2C41 ps
: ;=3C5\: -5327 T+=550=128993rT,=427t=8824.m
When taking =11
both meet the K=10 requirement
tr.=3348a
aa348g
JH/T S0093-1997
,,T,+550*>1+reaches the =11 requirement
(T=427-=8824>reaches the K=1 requirement
both exceed the requirements in Guangdong and Guangxi, and it can be considered that the two reliability are equivalent. [Center diagram estimation parameter grid test L and R,
bearing life obeys the two-state Wei i Dong distribution F -R ~i\, written in the form of the problem or Lk, Fl, -, according to the fiber (see Figure 1) <vertical coordinates are. Donate coordinates are) as Xin: with V as the characteristic life "() = 32 a line, A = g - V and other numbers, find the parameters and. Straight can be uniquely determined. JU.1 stock graph estimate
For the test evaluation of the failure number increase is generally not less than 10, the rate paper can be used to estimate t, usually according to the vertical coordinate F, (L) =. 0wic.4
Draw the coordinates of points on the graph + and then configure the distribution line B according to the position of each point. The assigned straight line should be evenly distributed on both sides of the straight line. The difference between the data points near 3-7 and the distribution line should be as small as possible. The total number of test data is = [, 2,.
Find the V or V from the straight line B, and then calculate L and R respectively by F(Lm)=a.10,R=. 10.3 Estimation of the group elimination method
The group elimination method can be used to shorten the test period. As long as the effective life of each group is obtained, the test can be carried out in sequence, and then the short life of the group can be revealed on the lead paper. The two points are arranged at the end 1 and the end: 4 to obtain the distribution line of the production batch: usually divided into 6-groups, each group has 2-1 sets. Plan, 6265 bearing, 1=100, provide 32 sets of bearings, 8 groups for testing: 4 sets of each set are put on the machine at the same time. The shortest life of each group is 80: 110._55.170, 220.241.300.380 respectively. Use the figure and V to find the first: from the 8 short life data, find the line 4. Table: The corresponding model coordinates of No. 9 are on, so the numerical values ​​of the points are divided into: (0.083, 80)), from the original L)=
(C.23.110).-, (3.917.3R0). Enclose it in the probability of uploading 10.1 method to match the straight load A, the first step: from A to find the line H.
2) day for each group, make the missing wire of the point M on the straight line B to be found as FL)=2=0. 1.19.4+0.4
2) Draw a parallel line, draw a horizontal line through F(L) 50% parallel and intersect with the elimination line A at the point, draw a line through the point parallel to the coordinate axis and a line through the horizontal axis through F(L).-0.155 intersects at point M. ) Draw a straight line parallel to point M.
The first straight line is VV, when n is a relative number, the second straight line is VV, and the second straight line is R, respectively. The above values ​​are plotted on a graph, see Figure 1. However, the diagram is suitable for those who have clear requirements for parameters V, especially those who are not very concerned about the length of the test period, and only want to get the most effective test results. When choosing the estimation method, the general factors of the sample parameters should be estimated, the grouping limit, the test period is short, and the general graphical estimation method is also a little larger. EB/T5093 has made some estimates of the reliability R of the time judgment of L. IB/T50093-1997 If the graphical estimation parameters are used, they can be directly obtained on the distribution line. This standard only gives two quick solutions when R or Lm is known: I1.1 When R, = Lm, the time of the test is reduced to the actual time of the test, and the time reliability is calculated: R = or 1. It is called "production risk.
=c when -_R,=, grid step use special and risk.
Example: The decay continues multiplied by the time · system test, the total =h no failure occurs, showing. The heart and heart are respectively 1 by. =3. =4. Substitute to get 0.9n0.74
Fang Zhen The remaining cases remain unchanged. 112, R, r.96, 3. You can call out the increase in six pieces to add a reliable diagram to test (-time production failure. If you want to ensure that R9 is always on 2, when you take U. Attached to the change can be. J1.3 Fire efficiency:
.a Give the appropriate life strict party to risk can be calibrated to accept the large effect (upper limit) xi
1 11), this B Ra is determined by the equation Lle=--
--Ink from the micro re
: Mathematics
11.3.2 The risk of failure is determined as 3. The lower limit is = the average life.
.-, at this time R, from the equation--
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