Some standard content:
JCs,21100.20
National Standard of the People's Republic of China
GB/T 4661—2002
Replaces (1651—198)
Rolling bearings
2002-10-11 Issued
Cylindrical rollersWww.bzxZ.net
Implementation on 2003-05-01
State Quality Supervision, Inspection and Quarantine Administration of the People's Republic of China
This standard replaces GB/41 Rolling bearings for cylindrical rollers. Compared with GB/T4661-2959, the main changes of this standard are as follows: - The writing format is modified according to GB/T4661-2959; GB/T46612C02 directly quotes the standard, cancels 3.1-2. in the original standard, adds the definition and number of terminology and specification distance (3.1~3.19 after 1989. Chapter 3 of this standard;
cancels the specification 2 in the original 1 (Table 1 of the 1989 version, Table 1 of this version:! Cancel the and columns in the original table, and adjust the public certificate value and surface material box degree (Table 2, Table 3, Table 4 of the 1989 version. Table 7, Table 8, Table 41 of this version. Add the commonly used current value of Ding Changli (see table); Add the requirement for residual magnetism (death 5:
Reduce the standard 4 method ( 1989 edition, No. 8, this edition, No. 8). Added the measurement of 30\V type block width difference (see Appendix A); Appendix A of this standard is the current version. The work was proposed by the Small Machinery Industry Association. This standard is the Technical Committee for Standardization of Disconnected Bearings (CSBIS/TCD8). The drafting unit of the standard is: Jiyang Bearing Research Institute. The main drafter of this standard is: Guo Baobi. The previous version of the standard replaced by this standard is: (: B3 4361-1984, GB/T 466:—1989.1 Scope
Rolling bearings cylindrical roller
GR/T 4661—2002
This supplement defines the dimensions, tolerance grades and technical requirements, measurement and inspection methods, inspection rules, marking and packaging of four-dimensional bearings, and is applicable to rolling bearings for re-assembly and commodity use (hereinafter referred to as "Shenzhen"). 2 Normative reference documents
The following documents are cited as clauses of this standard. All the referenced documents of the date of manufacture shall be subject to all subsequent amendments [excluding the contents of the error or the version that is not applicable to the standard] However, the parties to this standard are encouraged to investigate whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB/T307.319G General Technical Rules for the Determination of Medical Degrees CB/44-1984 Method for Determining the Difference of Medical Degrees, Blue Point Method (neYS0/[21S422) GTI/493.2 (heart 2
2 dynamic standard (ISO5593.1997.IDT) GB/F 7811-1599
Moving bearing parameter symbol
CB1182542C09 High carbon chromium bearing adjustment
JB/- 1255 --3007
I/T3034—1S$3
JB.T 6GMS1S93
JB/T7n51-1S93
J3/T 7S61-1934
JJ3/T 8196—_996
37T 8651 2J31
other magnetic bearing steel heat treatment technical conditions for dynamic bearing parts dynamic bearing oil seal with packaging
rolling parts surface error measurement and evaluation force method dynamic shaft zeroing surface roughness measurement and evaluation method micro-crown bearing hardness test method
rolling bearing rolling element difference and co-evaluation method embedded dynamic bearing and other parts carburizing heat treatment technology.B/T k21—1993
inspection rules for dynamic bearings and their commodity parts 3 terms, symbols and definitions (now national 1)
G13/T693020u2 established and the following terms and definitions are used in this standard, GB/T7811—1999 given. The following symbols are applicable to this standard.
The roller diameter gauge interval oRollerdiwueterwaugeinterval is the value divided evenly according to the allowable deviation of the nominal diameter, and 3.2
The roller length gauge interval Tu.lRullerIengthgaugeinterval is the value divided evenly according to the allowable deviation of the nominal length. 1
GB/I466-2002
1Size
From the outside of the small according to the period of 1.
Happy style
+. 5 X 4. E
7. 5*7. 3
Overall size
Section size meter
13:: 20
14×14
t4:: 20
16×24
22×24
25× 25
Table 1 continued)
GR/T 4661—2002
Single work for
GB/T4661—2002
Flow specification
2 × 2
2× 23
30:3-
32×:2
4:, 13
5 Technical requirements
5.1 Material and heat treatment
Table line)
After the shape
rolls the material of GBT3U7.31996 Table 2 and GR/T18254—30 (the material bucket is made, its hardness and width should be in accordance with the provisions of GB/T 31001/1—1 and J/T 31001.5-2 Tolerance
5. 2. 1 Tolerances etc.
according to the inch tolerance, the core tolerance value and the surface roughness are divided into 1, 1, mouth, the accuracy is from most to 5.2.2 diameter and drawing accuracy
many old tolerances etc. - individual tolerance values north diameter variation, diameter specification interval tolerance, return to the most 2 tolerances, * 2
division room etc.
.30...
-In. 5.-..-
usually rough
single monitoring for humble technology
-1. 1.,+ 6
Cold difference level
Applicable to the middle part of the long standard,
5.2.3 Long chapter
Table 2 (continued|
Ic..rr,-.
Standard
CB/T 4G61:20C2
Years for consultation
+:,,-6
Permitted public grade test wide observation and approval length record, length gauge value spacing, current value, end and runout connected to the table 3. Table 3
Public stem search
Surface roughness
The surface of each public grade roller is in accordance with the provisions of table 4, table 4
Public relations institute
5.4 ion surface shape
Book 1 Current value
3n.....-fn
-3n...-6..
-0.-.—10.0
..30.......
48.... 12.0
Unit is meter
Degree is meter
All tolerances are equal to the shape of roller, convexity, convexity of roller, etc. The product quality is 5.5
The roller residual limit should meet the requirements of GB: T46196 and GBT4661-202.
5.5 Appearance quality
The roller surface shall not be cracked, eroded, or have limited visible defects under the surface. 5.7 Others
For special requirements, the subscriber and the manufacturer can confirm. 6 Inspection and measurement methods
6.1 The diameter and diameter variation shall be measured by two-point method. 6.2 The measurement error shall be measured by the manufacturer. 6? The change in length of the roller can be measured by placing the roller between the probe and the plane perpendicular to the measuring axis or by using the two-point method. 6.4 Roller end measurement: The force method shown in the figure will make the roller V-shaped, rotate the roller for a week, and the maximum value shown by the tester. If there is a case of a large hole or a large self-injury, the 2! 6 method is used. The difference is only half of the difference after one week of rotation. The negative dimension of the center of the roller is measured at both ends. 6.6. The flatness of the figure is in accordance with the provisions of 7051993. The shape of the mountain is the most important measurement. The single instrument is used to adjust the surface of the workman, and the horizontal position is passed through the center line of the measuring head. The measuring head is used to measure the outer surface of the measured surface. The chamfer of the outer surface is measured outside the range of the measuring head. The measurement of the low temperature is based on the assumption of 1H/:73611S94. 6.9 The special measurement of the temperature is based on [B;-16
6156.
6.10 The model is not selected [4/~13G—2 067's current regulations. 611 ion's appearance is always a dare to say Deng Chang, according to the inspection rules of the finished roller 821 a: 99 see regulations, the maximum k of the specification is 2N when u is 23mm.
8 mark
8-1 mark content
,) name, the sub;
) nominal size ten: white diameter length seat, single m not happy point: liquid tolerance grade: respectively (,: I, T series mark: diameter gauge and nourishment, length is not visible, but the unit m is not marked:) the sub conforms to the standard abbreviation and supplementary technical code. 2 mark method
CB/T 4661-2002
In the delivery note, certificate of conformity, packaging and other places where marking is required, add the content of B.1 and the serial number mark, and the items between the items are marked with 8.3 marking examples
Example 1: Figure # Roller 5×1+3/--8GB/T26612062 shows a round roller that complies with GB/T46612002, with a nominal diameter of 5mm+3/-8mm, a tolerance grade of +3m, a minimum length of -8m, and an actual average diameter of the roller between 5.05mm and 5.0c 55mm, the actual length of the roller is between 7.84m1 and -8.00:mm: Example 2: Figure 202G05/-1RGB126612C02 shows a roller that complies with GB/T166]2002, with a nominal diameter of 20mm, a nominal length of 201, and a tolerance grade of T: the roller diameter specification value is -3m, the roller length specification value is -18m. The actual flat inner diameter of the roller is between 12.555mm-19.5965mm, and the actual length of the roller is between 19.975mm-19.98Ram. 9 Packaging
9.1 Finished products that have passed the inspection and supervision shall be anti-rust and packaged according to the provisions of JB/T3034-1993. When packaging, products of different sizes, tolerance grades and specifications shall be packed in different containers (boxes) and not packed in bulk: 9.2 The product logo, material quantity (weight reduction), manufacturer's name or trademark, batch number and packaging date shall be clearly marked on the outside of the rolled packaging container (tray).
10 Storage
After anti-rust packaging, the products shall be packaged in accordance with the transportation and storage regulations specified in JB/3034-1993. The original weight of the products shall be 12 pieces per kilogram before leaving the factory.
GBT 46612002
.1 Circle gauge retrospective method
Appendix A
Standard specification)
Measurement method of error
Method for measuring error of network network The method of measuring error of network network is based on the current definition of JB2-13: using the least square method to evaluate the error of network A.2 Block measurement method
When the conditions for using circle gauge are not yet available, B/43-14 can be used to measure the group error of network network. For the occasional slight roundness, two-point wind measurement can be used. The angle of the V plastic block has a great influence on the accuracy. There is a method that can be suitable for all numbers. The commonly used V angles in the actual measurement are i, 120\, and 120\. The ratio of the indication number to the actual roundness error is the magnification number: then Table A, 2! When determining the measurement error, the indication number should be divided by the magnification number. The roller is measured at two points, and the values of 69\U\ and 120\V are shown in Table 4.
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