JB/T 6637-1993 Technical conditions for standard equipment for rolling bearings JB/T6637-1993 Standard download and decompression password: www.bzxz.net

J11 | | tt | | JB | |tt||Ministry of Machinery Industry of the People's Republic of China
Released
Implemented on 1994-01-01
Machinery Industry Standards of the People's Republic of China
Technical Conditions for Standards for Rolling Bearings| |tt||Subject content and scope of application
1
JB/T 663793
This standard specifies the standards for the inspection of rolling bearings and other parts suitable for the following size ranges. prohibitions and technical requirements. This standard is applicable to the production inspection and user acceptance of standards for rolling bearings and parts inspection. The nominal inner diameter of the rolling bearing column hole is 0.6~400mm; the nominal outer diameter of the rolling bearing cylinder is 2.5~500mm; the nominal inner diameter of the tapered hole of the rolling bearing is ~500mm: tapered roller Bearing outer ring raceway diameter 18~500mm; tapered roller bearing inner ring raceway diameter
18~400mm
rolling bearing width ~ 400mm:
tapered roller big end diameter ~ 120mm .
2 Reference standards
GB 307.1
Rolling bearing tolerances
3 symbols
d
D-
Dw|| tt||H-
A
Ao
d,
D.
A
An,
Any
Aump
A,ag
Nominal inner diameter of the standard device (Figure 3)
Nominal outer diameter of the standard device (Figure 1, Figure 2)
Standard Half of the internal and external reference cone angles (Figure 4, Figure 5, Figure 6, Figure 8) - Diameter of the large end of the tapered roller standard (Figure 6) Width of the standard (Figure 7)
Single inner diameter Limit deviation
Limit deviation of a single outer diameter
Diameter of the small end of the standard cone hole (Fig. 4) Diameter of the big end of the standard cone (Fig. 5) Limit deviation of the small end of a single conical hole
Limit deviation of the big end of a single cone
Limit deviation of the big end of a single conical roller
The average inner hole diameter deviation of the basic circular dimensional hole at the theoretical small end The average inner hole diameter of the basic adjusting taper hole at the theoretical big end Deviation ()————Inner hole angle difference
AH
Limit flow difference of a single width
4 tolerance levels
Width standardizer is not divided into tolerance levels, and other standards Devices are divided according to manufacturing tolerances! ,,class. Class I standards are used for Class B and C bearings. Approved by the Ministry of Machinery Industry on 1993-05-07
Implemented on 1994-01-01
1
JB/T6637-93||tt| |Comparative measurement of the diameters of grade 0 and grade I cylindrical and tapered rollers; grade I standard instrument is used for comparative measurement of grade D bearings and I cylindrical and tapered rollers; grade standard instrument is used for grade G and E grade bearings and grade G tapered bores Comparative measurement of bearings, magnitude coils and tapered rollers. 5 Technical requirements
5.1 The standard device is made of GCr15 bearing steel, and the width standard device can be made of dense jade material. The hardness value of all standards shall not be less than 61HRC, and the hardness unevenness shall not exceed 1HRC. 5.2 The chamfer of the standard is 0.5×45° when the nominal outer diameter is less than 50mm, and 1×45° when the nominal outer diameter is greater than 50mm. 5.3 The surface roughness R of the working surface of the Class I standard is 0.032μm; 1. The surface roughness R value of the working surface of the grade standard is 0.063 μm; the surface roughness R value of the non-working surface is 0.63 μm. The non-working surface is allowed to be knurled or chrome plated. 5.4 The dimensional tolerance and geometric tolerance of the standard instrument are as specified in Table 1 to Table 5. Figure 1
nominal size
D(d)
mm
exceeds
0.6
50
80
120
180
250
315
400|| tt||2
254
315
100
500
Table 1
Size Extreme
Limited|| tt||An
30
±5
Figure 2
standard tolerance for rolling bearing ring column hole
difference
control| |tt||A
public
±2
±2
+
±3
±3
main
±5
±6
±8
±3
main
±4
±4| |tt||±5
±6
3
±10
±12
±15bZxz.net
Difference||tt| |0. 2
0. 2
0.2
0.25
0. 5
1. 6
2.0||tt| |2.5
0. 3
0. 4
0. 5
6
0.6
0.8
1 .
2. 0
2. 5
3.0
4. 0
shape
degree
etc.| |tt||0. 5
0. 6
0.6
1.2
2.0
3.0
5.0
6.0
bit
common
straightness of prime line
level
0.4
0. 4
0.
Q.
0.6
0.8
1.2
1. 9
1.5
2. 0||tt ||0.6
0.6
0.6
0. 6
0. 6
1.6
1.8
2.2| |tt||0.8
2.
Figure 3
um
Difference
Parallelness of both end faces and center line
Perpendicularity to end face
0. 6
0. 4
2. 4
0.6
0
1.0||tt ||2
Nominal size
D.(d,), |tt||250
315
400
到
18
30
50
80||tt ||120
180
250
315
400
500
公称北京
De||tt| mm|
50
80
120
±2
±3
±4
±5||tt| |±6
+7
±2
±3
-
图4
表2
尺
±3
±4
±5
±6
±7
9
±11|| tt||±12
±15
±3
±3
主
±5
±6||tt| |+7
±5
±10
size
Ap
1
±3
±4| |tt||±5
极
±4
±5
±10
±12
±15||tt ||极
JB/T 663793
劉
图5
圆维时子开道内圈、外图时道用标准器公差限||tt ||Ae
I
±4
±4
±5
±6
±8
± 10
±12
±14
±15
偏
差
全宽图馆角20
公
I
±
±
±1
±1.5
±1.
±||tt ||±1. 5
±1. 5
差
I
±2
±2
±2
±2
±2|| tt||±3
±
±3
±3
图6
形
素线设计度|| tt||等
-
0. 4
0. 4
0. 5
0.6
0.8
1.0
1.2
1.4
1.6
0.8
0. 8
0. 8
0.8
1.0
1.2
1.
2. 6?子全长四黔角2g
公
I
±0. 7
±1
1.5
$2
±2
±2
±3
±4|| tt||±6
圆
差
1
0. 5
0. 6
0. 8
1. 0
形
度
等
I
1.2
1.5
2.0
2.5| |tt||位
级
1
0. 5
0. 6
0. 6
0.8
1. 0
1.2
1.4
1. 6
1.8
位
公
公
度
差
μm
两端面的电视度和中
心线对面的电视度
0.8
1.0
1.0
1.2
1.6||tt| |1.8
2.0
2. 2
素线设计度
级
-
0. 4
0.5
0.8
1.0
1.2
1. 5
2.0
2.5
2. 5
3.0
0. 6
0. 6
0. 8
.0
1.2
1.4
1.8
2.0
2.2
差
0.8
0.8
1. 0
1.2
1.4
1. 6
2.0
2. 2
2.4
2. 6
m
面跳动
0.8
1.6
1.2
1. 5
2.0
2.5
3, c
4.0
4.0
3
公
称尺
mm
超
过
10
18
30
50
80
120
180
250
公称北京
mam
性交
10
4| |tt||d.
到
10
18
寸
H
到
10|| tt||18
30
50
80
120
180
250
400||tt| |B. tt||±2
±4
±7
± 10
±12
±15
±17||tt ||± 20
± 22
d
图8
工作面的图像度
形
0.8||tt| |0.8
1. 0
1.0
1. 0.| . |tt||+12
0
0.8
0.8
度
公
素线设计度度||tt| |影
位
0. 8
0.8
公
两时面的电视度
差
1.5
1.5
2. 0
2. 0
2. 0
2. 5
2. 5
3. 0
3.0
μm
The parallelism of the two end surfaces and the perpendicularity of the center line to the increasing surface
Difference
2.5
2.5| |tt||nominal size d.
mm
over
over
18
30
50
80
120
180
250
315
400
to
30
50|| tt||80
120
180
250
315
400
500
Size limit deviation|| tt||+14
0
+16
0
+20
o
+23
+ 26
o
+30
0
+34
0
+38
0||tt| |+42
o
+14
0
+16
o
+20
0|| tt||+23
0
+26
0
+30
0
+34
o
+38
o
+42
o
JB/T6637-93
Continued Table 5
Park
1.0
1. 0
1.2
1.5
2.0
3.0
4.0
5.0
6.0
degree
5.5 standard should be stabilized, and its annual change in size should not exceed the following requirements: Level 1 standard should be ± (0.05 tens r) μm|| tt||1st grade standard is ±(0.1+2r)μm
One of the 6 acceptance rules
True linearity of home line
Shape
Position
0.8
1.0
1.2||tt| | 1.5 | |tt||Perpendicularity between center line and end face
Difference
2.5
3.0
4.0
5.0
6.0||tt ||8.0
10
10
12
6.1 The standard instrument for bearings shall be accepted by the measurement department of the manufacturer. The standard instrument for bearings submitted to the user should be accompanied by the calibration certificate and quality certificate of the standard instrument. The certificate should indicate:
Manufacturer name:
a.
b .
Tolerance grade code:
Packing date.
c
6.2 When subscribers accept standard instruments for bearings, the acceptance rules should comply with the regulations of the manufacturer's competent department. 6.3 Bearing standards should be measured and inspected according to the methods specified in the corresponding calibration regulations. The manufacturer can also use other methods for measurement and inspection. However, in case of dispute, the methods specified in the calibration regulations shall prevail. 7 Marking and Packaging
7.1 The standard instrument used for bearings should be marked with the nominal size and measurement direction code "11\" of the standard instrument, the manufacturer code (or trademark and the model number of the standard instrument). In addition, the manufacturer's supervisor can also According to the regulations of the department and the agreement between the subscriber and the manufacturer, a supplementary code indicating special technical requirements is added to the standard instrument code.
The mark of the standard instrument for bearings should be marked on the non-datum end face, and the size and distribution of the mark should be marked. The location is specified by the competent department of the manufacturer. 7.2 The model number and manufacturer code (or trademark) of the standard device for bearings are generally printed on the non-datum end face of the standard device by mechanical means. Codes indicating special technical requirements and other codes can be marked separately. 7.3 For standard gauges for bearings where the plane width of the non-reference end face (the calculated minimum value) is less than 2mm, the code of the special technical requirements is allowed to be marked on the packaging,
JB/T6637- 93
7.4 The labels on the packaging of the bearing standard should be complete and clear, and the bearing standard supplied to the user should be rust-proofed and packaged in accordance with the regulations of the manufacturer's competent department. 7.5
Additional. Note:
This standard is proposed by the National Rolling Bearing Standardization Technical Committee. This standard is under the jurisdiction of the Luoyang Bearing Research Institute of the Ministry of Machinery Industry. The drafter of this standard is Li Deliang. |tt||6
1. The standard instrument for bearings should be marked with the nominal size and measurement direction code "11\" of the standard instrument, the manufacturer's code (or trademark and the model number of the standard instrument). In addition, the standard instrument can be marked according to the regulations of the manufacturer's competent department and the relationship between the subscriber and the manufacturer. According to the agreement, a supplementary code indicating special technical requirements is added to the standard device code.
The mark of the standard device for bearings should be marked on the non-datum end face, and the size and distribution position of the mark shall be specified by the manufacturer's competent department 7.2. The model number and manufacturer code (or trademark) of the standard instrument used for bearings are generally printed on the non-datum end face of the standard instrument by mechanical means. Codes indicating special technical requirements and other codes can be marked separately. 7.3 Plane width of the non-datum end face (calculation). The minimum value of the bearing is less than 2mm. The code number of the special technical requirements is allowed to be marked on the packaging.
JB/T6637-93
7.4 bearings The markings on the packaging of the standard should be complete and clear. The standard for bearings supplied to the user should be rust-proofed and packaged in accordance with the regulations of the manufacturer's competent department. 7.5
Additional instructions:
This standard. Proposed by the National Rolling Bearing Standardization Technical Committee. This standard is under the jurisdiction of the Luoyang Bearing Research Institute of the Ministry of Machinery Industry. The drafter of this standard is Li Deliang. |1. The standard instrument for bearings should be marked with the nominal size and measurement direction code "11\" of the standard instrument, the manufacturer's code (or trademark and the model number of the standard instrument). In addition, the standard instrument can be marked according to the regulations of the manufacturer's competent department and the relationship between the subscriber and the manufacturer. According to the agreement, a supplementary code indicating special technical requirements is added to the standard device code.
The mark of the standard device for bearings should be marked on the non-datum end face, and the size and distribution position of the mark shall be specified by the manufacturer's competent department 7.2. The model number and manufacturer code (or trademark) of the standard instrument used for bearings are generally printed on the non-datum end face of the standard instrument by mechanical means. Codes indicating special technical requirements and other codes can be marked separately. 7.3 Plane width of the non-datum end face (calculation). The minimum value of the bearing is less than 2mm. The code number of the special technical requirements is allowed to be marked on the packaging.
JB/T6637-93
7.4 bearings The markings on the packaging of the standard should be complete and clear. The standard for bearings supplied to the user should be rust-proofed and packaged in accordance with the regulations of the manufacturer's competent department. 7.5
Additional instructions:
This standard. Proposed by the National Rolling Bearing Standardization Technical Committee. This standard is under the jurisdiction of the Luoyang Bearing Research Institute of the Ministry of Machinery Industry. The drafter of this standard is Li Deliang. |
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