JB/T 5314-2002 Rolling bearing vibration (acceleration) measurement method

This standard specifies the measurement method of vibration (acceleration) of rolling bearings (hereinafter referred to as bearings). This standard applies to deep groove ball bearings, angular contact ball bearings, tapered roller bearings and cylindrical roller bearings (N, NF, NU, NJ types) with nominal inner diameters of 3 mm to 120 mm. JB/T 5314-2002 Rolling bearing vibration (acceleration) measurement method JB/T5314-2002 Standard download and decompression password: www.bzxz.net

ICS21.100.20
Machinery Industry Standard of the People's Republic of China
JB/T5314—-2002
replaces JB/T5314—1991|| tt||Rolling bearings
Vibration (acceleration) measurement methods
Rolling bearings--Measuring methods for vibration(acceleration)2002-07-16 Released
Implemented on 2002-12-01|| tt||Foreword issued by the National Economic and Trade Commission of the People's Republic of China,
1 Scope
2 Terms and Definitions, Units
2.1 Terms and Definitions
2.2 Units..| |tt||3 Micro-test conditions..
3.1 Requirements for instruments..
3.2 Test environment
3.3 Basic status of bearings
Test methods and procedures|| tt||45
Test results
JB/T53142002
Foreword
This standard Replaces JB/T5314-1991 "Measurement Method of Vibration (Acceleration) of Rolling Bearings". Compared with JB/T5314-1991, the main changes of this standard are as follows: According to the requirements of GB/T1.1-2000, the format of the standard has been modified: JB/T5314-2002
The scope of application of the standard is: The inner diameter of 10mm~120mm has been expanded to 3mm~120mm, and the relevant content of the vibration test of bearings with an inner diameter of 3mm~9mm has been added accordingly;
A pair of definitions of "bearing vibration acceleration level" have been supplemented (see 2.1.3) : The definition of "basic vibration acceleration level" has been modified (see 2.1.4): the definitions of the peak value of bearing vibration acceleration level and bearing vibration acceleration crest factor (see 2.1.6 and 2.1.7) and their testing have been added Content:
The fitting tolerance of the spindle and the inner hole of the bearing has been modified (4.1.6.4 of the 1991 edition: Table 1 of this edition). The tolerance applied when measuring the movement of deep groove ball bearings with an inner diameter of 3mm~9mm has been added. Synthetic center axial load value: Modified the synthetic radial load value applied when the vibration base of the tapered roller bearing is required (Table 1 of the 1991 version, Table 2 of this version): Propose the harmonic frequency of the piezoelectric accelerometer Specific requirements (see 3.1.2.1): The installation resonance rate of the acceleration sensor system is modified (4.1.7.5 of the 1991 version, 3.1.2.3 of this version): the dynamic range of the electronic instrument is changed from 20dB~80dB to a dynamic range of not Less than 60dB (4.1.8.3 of the 1991 version: 3.1.3.1 of this version):
The signal-to-noise ratio of electronic instruments is no longer required, but the background media sound is required instead (4.1 of the 1991 version. 8.2: 3.1.3.2 of this edition): The name of the bearing lubricating oil was changed from "machine oil" to "total loss system oil", and the brand name was also modified accordingly, and the mechanical impurity content control index was added (4.1 of the 1991 edition. 9.3, 4.1.9.4 and Table 2, 3.3.2 and Table 3 of this edition): Added the evaluation method for the vibration acceleration level peak value and peak fixed number test results (see 5.2, 5.3). This standard was proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Rolling Bearing Standardization Technical Committee (CSTBS/TC98). This standard was drafted by: Yang Bearing Research Institute, Renben Group Co., Ltd., Ningbo Cixing Group Company, Dalian Bearing Instruments factory. The main drafters of this standard: Sun Liming, Shan Fubing, Zhao Lianchun, Zhou Chuandi, Mao Yingbo, Zhu Kongmin, Liu Xuefeng. The previous versions of the standard replaced by this standard are: JB/T 5314-1991.
1 Range
Measurement method of vibration (acceleration) of rolling bearings This standard specifies the measurement method of vibration (acceleration) of rolling bearings (hereinafter referred to as bearings). JB/T5314—2002
This standard applies to deep groove ball bearings, angular contact ball bearings, tapered roller bearings and cylindrical roller bearings (N, NF, NU, NJ types) with nominal inner diameters of 3mm to 120mm.
2 Terms and Definitions, Units
2.1 Terms and Definitions
The following terms and definitions apply to this standard. 2.1.1 | | tt | Grip for bearings. 2.1.2
Vibration acceleration level vibrationaccelerationlevel is the common logarithm of the ratio of the root mean square value of vibration acceleration within a certain frequency band to the reference acceleration value, and the value obtained by multiplying it by 20 is called the vibration acceleration level. || tt | Under a certain radial or axial load, the radial vibration acceleration level at one-half the width of the outer cylindrical surface is the bearing vibration acceleration level. | |tt | , the indication value at this time is the basic dynamic acceleration level of the system, 2.1.5
The acceleration type transducer system consists of an accelerometer and mechanical components to convert the acceleration that represents the bearing vibration into the corresponding electric quantity. The device that feeds the electronic measuring instrument is called the acceleration sensor system 2.1.6
The bearing perturbation acceleration level peak valueofbearingvibratianaccelerationleveIn a given time interval, the bearing perturbation acceleration maximum value corresponds to the speed level. 2.1.7
Bearing perturbation acceleration crest factor crestfactorofbearingvibrationacceleraction The ratio of the bearing vibration acceleration peak value (m/s\) to the bearing vibration acceleration root mean square value (m/s\). 2.2 Unit
The units of vibration acceleration level, bearing vibration acceleration level, basic vibration acceleration level and bearing vibration acceleration level peak value are all expressed in "decibel" (dB). Zero "dB" corresponds to thousands of the earth's gravity acceleration value. one part. The calculation formula for the "decibel" number is: JB/T5314-2002Www.bzxZ.net
where:
L vibration acceleration level, the unit is dB:
L=201g
A - the root mean square value of vibration acceleration within a certain frequency range or the peak value of bearing vibration acceleration, in m/s\: ao reference acceleration, its value is 9.81×10-3m /s23 Test conditions
3.1 Requirements for instruments
3.1.1 Mechanical device
The mechanical device includes the driving device and installation that make the main shaft rotate at a certain speed Bearing spindle, axial load loading device and radial load loading device, as well as the installation device of the acceleration sensor system, etc. 3.1.1.1 Driving device:
3.1.1.1.1 The basic vibration acceleration level of the driving device for measuring bearing vibration with an inner diameter of 3mm≤d≤60mm should be less than 10dB, and the measured inner diameter is 60mm.
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