JB/T 7047-1999 This standard is a revision of JB/T 7047-93 "Vibration (acceleration) technical conditions for rolling bearings and deep groove ball bearings". The following modifications have been made: - The diameter series has been modified accordingly according to the provisions of GB/T 272-1993; - The corresponding vibration values ​​have been added; the vibration values ​​corresponding to each diameter series have been supplemented; - Editorial modifications have been made according to relevant regulations. This standard specifies the vibration (acceleration) technical conditions for deep groove ball bearings whose outer dimensions conform to the 0, 2, and 3 diameter series in GB/T 276-1993 "Outer dimensions of rolling bearings and deep groove ball bearings", the nominal inner diameter is 3~120mm, and the radial clearance conforms to the 0 group clearance in GB/T 4640-1993 "Radial clearance of rolling bearings". This standard Z group is the basic requirement for general-purpose bearings, which is selected for production inspection of finished bearings by bearing manufacturers, and "Z" is not marked on the bearings. The Z1, Z2, Z3 and Z4 groups are suitable for production inspection of bearings by manufacturers and acceptance by users. JB/T 7047-1999 Specification for vibration (acceleration) of rolling bearings and deep groove ball bearings JB/T7047-1999 Standard download decompression password: www.bzxz.net

ICS21.100.20
Machinery Industry Standard of the People's Republic of China
JB/T7047-1999
Rolling bearings
Specification of vibration (acceleration) for deep groove ball bearingsRolling bearings-Specification of vibration (acceleration) for deep groove ball bearings
Published on 1999-06-28
State Bureau of Machinery IndustrybzxZ.net
Implementation on 2000-01-01
JB/T7047-1999
This standard is a revision of JB/7047-93 "Specification of vibration (acceleration) for deep groove ball bearings". Compared with the original standard, this standard has been revised in the following four aspects: the writing format has been modified according to the provisions of GB/T1.1-1993 "Guidelines for Standardization Work Unit 1: Drafting and Expression Rules of Standards Part 1: Basic Provisions for Standard Writing"; the diameter series has been modified accordingly according to the provisions of GB/T272-1993 "Rolling Bearing Code Method"; the vibration value of group Z3 has been added to the 0 diameter series, and the vibration value of group Z4 has been added to the 2 and 3 diameter series; the vibration values ​​corresponding to the diameter series of inner diameter d=22mm, 28mm and 32mm have been supplemented. This standard replaces JB/T7047-93 from the date of implementation. Appendix A of this standard is the appendix of the standard.
This standard is proposed and managed by the National Technical Committee for Standardization of Rolling Bearings. The drafting units of this standard: Luoyang Bearing Research Institute, Renben Group Co., Ltd. The main drafters of this standard: Sun Liming, Chen Yuan, Jiang Shaofeng, Zhao Lianchun, Hu Naida, Xia Kelang. 1 Scope
Standard of the Machinery Industry of the People's Republic of China
Rolling bearings
Specification of vibration (acceleration) for deep groove ball bearingsRolling bearings-Specification of vibration (acceleration) for deep groove ball bearings
JB/T7047-1999
Replaces JB/T7047-93
This standard specifies the vibration (acceleration) technical conditions of deep groove ball bearings whose outer dimensions conform to the 0, 2, and 3 diameter series in GB/T276 "Outer dimensions of rolling bearings and deep groove ball bearings", the nominal inner diameter is 3~120mm, and the radial clearance conforms to the 0 group clearance in GB/T4604 "Radial clearance of rolling bearings".
Group B of this standard is the basic requirement for general bearings, which is applicable to the production inspection of finished bearings by bearing manufacturers, and the bearings are not marked\z\.
Groups Z1, Z2, Z3 and Z4 are applicable to production inspection and user acceptance of bearings by manufacturers. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of this standard, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T276—1994
GB/T28281987
GB/T4604—1993
JB/T 53141991
3 Definitions and units
Rolling bearingsDeep groove ball bearingsBody dimensions
Batch inspectionCount sampling procedures and sampling tables (applicable to continuous batch inspection)Rolling bearing radial clearance
Rolling bearing vibration (acceleration) measurement method shall be in accordance with the provisions of JB/T5314.
4 Technical requirements
4.1 For deep groove ball bearings with inner diameters of 3~60mm and diameter series 0, 2, and 3, the vibration acceleration level of a single bearing shall comply with the requirements of Table 1. 4.2 For deep groove ball bearings with an inner diameter of 65~120mm and diameter series 0, 2, and 3, the vibration acceleration level of a single bearing shall comply with the provisions of Table 2. Bearing
Nominal inner diameter
Diameter series (0)
JB/T7047-1999
Single bearing vibration acceleration level
Diameter series (2)
Diameter series (3)
Nominal inner diameter
5 Measurement method
Diameter series (0)
JB/T7047—1999
Single bearing vibration acceleration level
Diameter series (2)
(dB)
Diameter series (3)
5.1 The vibration measurement method for deep groove ball bearings with an inner diameter of 10~120mm shall comply with the relevant provisions of JB/T5314. The vibration measurement method of deep groove ball bearings with an inner diameter of 3 to 9 mm shall be in accordance with the provisions of Appendix A (Appendix to the standard). 5.2 For deep groove ball bearings with dust covers or seals, the dust covers or seals shall be measured after installation. 6 Inspection rules
6.1 When a single bearing (referring to any set of bearings in the sample) is tested in accordance with the provisions of this standard, if its vibration acceleration level is greater than the provisions of Table 1 or Table 2, the product is unqualified. 6.2 When assessing the vibration of bearings batch by batch, the qualified quality level AQL value shall be 1.5 in accordance with GB/T2828, and the general inspection level II shall be used, and the normal inspection one-time sampling plan shall be adopted.
JB/T7047—1999
Appendix A
(Appendix to the standard)
Measurement method
A1 The vibration measurement method for deep groove ball bearings with an inner diameter of 3~9mm is as follows: a) The spindle speed is 1500r/min±30r/min; b) The tolerance of the mandrel matched with the inner diameter of the bearing is 5: c) The synthetic axial load applied to the stationary outer ring of the measured bearing shall be in accordance with the provisions of Table A1, with an error of ±3N; d) The mass of the vibration transmitting rod shall be 21g±1g, and the shape and size of the vibration transmitting rod shall comply with the provisions of Figure AI; e) Other requirements shall be in accordance with the provisions of JB/T5314. Table A1
Bearing nominal inner diameter
H9-80XSW
Vibration rod material: GCr15
Synthetic axial load
SΦ4: YG series cemented carbide (hardness should not be less than 84.5HRA, surface roughness R value should not be greater than 0.125μm). Figure A1
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