JB/T 8880-2000 JB/T 8880-2000 Technical requirements for deep groove ball bearings for motors JB/T8880-2000 Standard download decompression password: www.bzxz.net

ICS L120.20bZxz.net
Machinery Industry Standard of the People's Republic of China
JB/T8890-2000
Technical Conditions for Deep Groove Ball Bearings for Electric Motors -Specifications2000-04-24 Issued
National Bureau of Machinery Industry
2000-10-01 Implementation
JBT8880-2880
This standard is a revision of [Old T8880-1999 Technical Conditions for Deep Groove Ball Bearings for Electric Motors]. During the revision, the original standard was edited and rectified
Compared with /T8880-1999, the main technical contents of this standard have been changed; the limit value of the light to static source in the source technical requirements has been compressed, and the requirements for matching have been added; the dynamic value and range of the bearing have been modified.
This standard replaces B-1999: Appendix A of this standard is the appendix of this standard.
This standard is proposed and managed by the National Technical Committee for Standardization of Rolling Bearings: The responsible drafting unit of this standard is Luoyang Bearing Research Institute. The main drafters of this standard are Song Li and Zhang Xiangyin. This standard was first issued in 1989 as J11027--89, and the standard number was adjusted to 1/T8880-1999 in April 1999. Mechanical Industry Standard of the People's Republic of China
Technical conditions for deep groove ball bearings for motors
Deep groove ball bearings for cleetric aoiprs-Specilications1Fang Gu
3B/THA0--2000
Dai Ying ET8880
The standard specifies the technical requirements, measurement methods, inspection rules, marking and installation of deep groove ball bearings for small and medium-sized motors (hereinafter referred to as bearings!).
This standard is applicable to production inspection and user acceptance of bearing manufacturers. 2Referenced standards
The provisions contained in the following standards are combined and used in this standard to form the text of the standard. When this standard is published, the versions shown are all valid. All standards will be revised. All parties using this standard should discuss the possibility of using the latest versions of the following standards. GBIT272-1993
GB/307.1994
GB.T 307.2 — 199S | | tt | --199E
JB/r 5314—1991
JB/ 70S]—[93
JB/T 7752--1995
J8/T8571199
JB/T 892I—1999
3 Code method
Code method for rolling bearings
Australia Bearings Wenxin Bearings
Rules and force methods for measuring and testing rolling shafts Rolling bearings
General technical overview
Rolling bearing installation
Supplementary provisions for the replacement of rolling bearings
Measurement and evaluation of radial clearance of rolling bearings Fangda Rolling bearing product mark
Drop bearings Vibration (velocity) measurement method for rolling bearings [perturbation acceleration measurement]
Rolling bearing cleanliness and assessment method
Technical conditions for sealed deep groove ball bearings
Dust protection for sealed deep groove ball bearings: grease injection, temperature rise performance test specification for rolling bearings and their commodity parts Inspection rules for shaft codes In addition to the provisions of GB/2T2 and GB/T 2974, the clearance is expressed by CM. Example of code:
6202RZ!P6 CM V2
Basic bearing number
Seal type
National South Machinery Industry Drawing 2000-04-24 Approved vibration (velocity) group
Shaft Institute
Tolerance grade
2000-10-01 Implementation
4 Technical requirements
The tolerances of bearings shall comply with the provisions of Japan/T307.1. For office-grade male bearings, the rotational tolerance should not be less than level 6. 4.1
4,2 The general technical requirements of bearings shall comply with the provisions of CB/T307.3. The radial clearance of bearings shall comply with the provisions of Table 5.4.3
The grease leakage, temperature rise and dustproof performance of sealed bearings shall comply with the provisions of JB/T 52.4.4
The cleanliness of bearings shall comply with the provisions of JB.T7050.4.5
The dynamic rotation of bearings is characterized by velocity perturbation parameters, and can also be characterized by added inverse vibration parameters. Its vibration value shall comply with the provisions of Table 2, Table 3 or Table AI and Table A2 in Appendix A (Appendix of the Standard). Table of radial clearance and fit of bearings
Bearing nominal internal light
2-10-18
-18--30
>30-50
>80-[00
2160~120
Out: Radial properties are ignored and are measured by the manufacturer. Light radial clearance
Bearing nominal
B3.n25
Low frequency band
Medium and super band
Baoxue Society
Medium and production company
Low frequency band
R family S085
Single bearing excavation (rigidity) limit
Medium missing band
High frequency band
Low frequency band
-++*+ -+
Medium band
High frequency band
22883553
Low frequency band
Shell hole
H6, H?
JS6, JS7
Medium frequency band
High band
Shaft nominal
Low frequency band
Medium recommended
Sound tracing band
JB/T 88802000
Table shows the vibration (speed) value of a single bearing
Low frequency band
Medium band
Note: The bearings in this table are the same as those in Table 2 when in motion. Measurement method
Standard: Middle tie
5.1 The measurement of bearing size tolerance and general tolerance shall be in accordance with the provisions of GB/T30-2. 5.2 The measurement of bearing radial clearance shall be in accordance with the provisions of JB/T9573. 5.3 The measurement of bearing vibration shall be in accordance with the provisions of JB/T9573 or JR5314. 5.4 The bearing grease, temperature rise and dust resistance performance test shall not be in accordance with the provisions of JBT8571. 6 Inspection rules
Frequency band
6 Before leaving the factory, the manufacturer's inspection department must conduct 100% vibration inspection (no frequency band on both sides
warping band in the middle
effective band
(.2 When accepting a bearing, vibration should be the most important inspection item. AQ is .5, use the general inspection level II, and use normal inspection and one sampling as the case: the remaining items shall be inspected according to the provisions of JB/T8921. 7 Marking
The marking of the bearing shall be in accordance with the provisions of JB3574.
8 Rust prevention and packaging
The finished bearings that have passed the inspection shall be rust-proofed and packaged according to the provisions of (B859: the bearings are used for sealing The anti-casting grease used should be compatible with the lubricant and should not invade the inside of the bearing. JBRSB0-2000
Appendix A
(Appendix to the standard)
Bearing vibration [acceleration limit
A1 The vibration [acceleration] limit of a single bearing is shown in Table AI and Table A2. Yuan A!
Bearing nominal
Inner diameter d
Bearing nominal
Inner diameter 4
Point series
Diameter multiplication series 0
Specific diameter series 2
Beijing rare high level 2
The speed of the shaft in this table is different from that of the normal diameter series!
Diameter multiplication series 3
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.