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GB/T 24610.3-2019 (GB/T24610.3-2019)

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GB/T 24610.3-2019
Rolling bearings--Measuring methods for vibration--Part 3. Radial spherical and tapered roller bearings with cylindrical bore and outside surface
ICS 21.100.20
J11
National Standards of People's Republic of China
Replaces GB/T 24610.3-2009
Method for measuring vibration of rolling bearings
Part 3. Cylindrical holes and cylindrical outer surfaces
Spherical roller bearings and tapered roller bearings
Part 3. Radialsphericalandtaperedrolerbearingswith
(ISO 15242-3..2017, IDT)
2019-10-18 released 2020-05-01 implemented
State Administration of Market Supervision
Published by China National Standardization Administration
Contents
Foreword I
Introduction Ⅱ
1 range 1
2 Normative references 1
3 Terms and definitions 1
4 Measurement procedure 1
4.1 Rotation frequency 1
4.2 Bearing axial load 1
5 Measurement and evaluation methods 2
5.1 Measured physical quantities 2
5.2 Frequency domain 2
5.3 Pulse and sharp pulse measurement 3
5.4 Test 3
6 Measurement conditions 3
6.1 Bearing measurement conditions 3
6.2 Test environmental conditions 3
6.3 Test device conditions 4
Appendix A (Normative) Measurement of centering accuracy of applied axial load 7
Foreword
GB/T 24610 "Measurement method for rolling bearing vibration" is divided into 4 parts.
--- Part 1. Basics;
--- Part 2. Radial ball bearings with cylindrical holes and cylindrical outer surfaces;
--- Part 3. Spherical roller bearings and tapered roller bearings with cylindrical bore and cylindrical outer surface;
--- Part 4. Cylindrical roller bearings with cylindrical bore and cylindrical outer surface.
This part is the third part of GB/T 24610.
This section is drafted in accordance with the rules given in GB/T 1.1-2009.
This section replaces GB/T 24610.3-2009 "Method for measuring vibration of rolling bearings-Part 3. With cylindrical holes and cylindrical appearance
Compared with GB/T 24610.3-2009, the main technical changes are as follows.
--- Modified the lower cut-off frequency of the low frequency band with a rotation frequency of 900min-1 (see Table 2, Table 2 of the.2009 edition);
--- Added "Example of frequency range of non-set rotation frequency" table (see Table 3);
--- Change "peak measurement" to "measurement of pulses and sharp pulses" (see 5.3, 5.3 of the.2009 edition);
--- Modified the illustration of the sensor setting position and the schematic diagram of the double-row tapered roller bearing (see Figure 2, Figure 2 of the.2009 edition);
--- Deleted the "requirements for operators" (see 6.4 of the.2009 version).
This section uses the translation method equivalent to ISO 15242-3..2017 `` Rolling bearing vibration measurement methods Part 3. With cylindrical holes
Spherical roller bearings and tapered roller bearings. "
The Chinese documents that have a consistent correspondence with the international documents referenced normatively in this section are as follows.
--- GB/T 1800.2-2009 Geometrical Product Specifications (GPS) Limits and Fits Part 2. Standard Tolerance Grades and
Hole and shaft limit deviation table (ISO 286-2. 1988, MOD)
--- GB/T 2298-2010 Vocabulary for mechanical vibration, shock and condition monitoring (ISO 2041..2009, IDT)
--- GB/T 4199-2003 Tolerance definition of rolling bearings (ISO 1132-1..2000, MOD)
--- GB/T 6930-2002 Vocabulary for rolling bearings (ISO 5593..1997, IDT)
--- GB/T 24610.1-2019 Rolling bearing vibration measurement method Part 1. Basics (ISO 15242-1..2015, IDT)
This section is proposed by China Machinery Industry Federation.
This part is under the jurisdiction of the National Rolling Bearing Standardization Technical Committee (SAC/TC98).
This section was drafted. Luoyang Bearing Research Institute Co., Ltd., Zhejiang Zhaofeng Mechanical and Electrical Co., Ltd., Fujian Yongan Bearing Co., Ltd.
Ren Company, Shandong Yujie Bearing Manufacturing Co., Ltd., Jim Bearing Group Co., Ltd., Xinchang Kaiyuan Automotive Bearing Co., Ltd.
Cheng (Changxing) Co., Ltd., Chongqing Changjiang Bearing Co., Ltd., Shandong Camry Bearing Technology Co., Ltd., Liaocheng Renhe Precision Bearing
Co., Ltd., Dalian Baishengyuan Technology Co., Ltd., Hangzhou Bearing Test Research Center Co., Ltd.
The main drafters of this section. Song Yucong, Kong Chenhuan, Qian Weihua, Cai Meigui, Zhang Tianping, Liu Dan, Niu Jianping, Zhao Xingxin, Yan Jingxiang,
Wang Yingchao, Hou Yongqiang, Du Xiaoyu, Cao Riqi, Li Xinglin.
The previous versions of the standards replaced by this section are.
--- GB/T 24610.3-2009.
introduction
The vibration of a rolling bearing is an important operating characteristic. Vibration can affect the performance of a mechanical system with bearings. When vibration
When propagated to the environment in which the operating mechanical system is located, it can cause audible noise, which can lead to system damage and even health problems.
The vibration of a rolling bearing during rotation is a complex physical phenomenon related to the operating conditions. Single set of shafts measured under a set of conditions
The bearing vibration value does not necessarily represent the vibration value under different conditions or when the bearing becomes a part of a larger component. Assessed
The sound generated by the mechanical system of the bearing is more complicated.It is also affected by the interface conditions, the position and orientation of the sensing device, and the sound of the system.
Impact of the learning environment. Air noise-GB/T 24610 (all parts) is defined as any unpleasant, undesired sound.
Because the term "unpleasant, undesired" has a subjective nature, its evaluation is more complicated. It can be considered that the structural vibration of the bearing is
Eventually the driving source for air noise. GB/T 24610 (all parts) only includes vibration measurement of selected bearing structures
method.
Bearing vibration can be evaluated using any of a number of methods, with different evaluation methods using different types of sensors and test conditions.
No set of values characterizing bearing vibrations can evaluate bearing vibration performance under all possible conditions of use. Eventually, also
It should be based on known bearing types, conditions of use, and vibration testing purposes (e.g.
To choose the most suitable test method. Therefore, the scope of application of bearing vibration standards is not universal. However, some methods have established
It has established a very wide scope of application and is considered a standard method.
This section details the assessment of the vibration of spherical roller bearings and tapered roller bearings with cylindrical bores and cylindrical outer surfaces on a test device.
Moving method.
Method for measuring vibration of rolling bearings
Part 3. Cylindrical holes and cylindrical outer surfaces
Spherical roller bearings and tapered roller bearings
1 Scope
This part of GB/T 24610 specifies the double-row spherical roller bearings with contact angle not greater than 45 ° under the established test conditions and
Vibration measurement methods for single and double row tapered roller bearings.
This section applies to double-row spherical roller bearings with cylindrical bores and cylindrical outer surfaces, as well as single- and double-row tapered roller bearings.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
ISO 286-2 Geometric Product Specifications (GPS) Linear Dimensional Tolerance ISO Code System Part 2. Standard Tolerance Classes and
Hole and shaft limit deviation table [Geometricalproductspecifications (GPS) -ISO codesystemfortorleranceson
linearsizes-Part 2. Tables ofstandardtolerancegradesandlimitdeviationsforholesandshafts]
ISO 1132-1 Rolling bearing tolerances-Part 1. Terms and definitions
Termsanddefinitions)
ISO 2041 Vocabulary for Mechanical Vibration, Shock and Condition Monitoring (Mechanicalvibration, shockandconditionmonito-
ring-Vocabulary)
ISO 5593 rolling bearing vocabulary (Rolingbearings-Vocabulary)
ISO 15242-1..2015 Rolling bearing vibration measurement methods-Part 1. Basics (Rolingbearings-Measuring
methodsforvibration-Part 1. Fundamentals)
3 terms and definitions
Terms and definitions defined in ISO 1132-1, ISO 2041, ISO 5593 and ISO 15242-1 apply to this document.
4 Measurement procedure
4.1 Rotation frequency
The setting value of the rotation frequency is 900min-1 (15s-1), and the deviation is 1-2%.
After negotiation between the manufacturer and the user, other rotation frequencies and deviations can also be used. For smaller bearings, for example,
Higher rotation frequency in order to obtain a proper vibration signal. Conversely, for bearings with larger dimensions, a lower rotation frequency can be used.
To avoid possible damage to rollers, ribs and raceways.
4.2 Bearing axial load
The axial load shall be applied to the bearing. The set values are specified in Table 1.
Table 1 Setting values of bearing axial load
Bearing outer diameter
Double-row spherical roller bearings
Single and double row tapered roller bearings
Contact angle ≤23 ° 23 ° < contact angle ≤45 °
> ≤
Set value of axial load
min.max.min.max.min.max.
mm NNN
30 50 45 55 90 110 180 220
50 70 90 110 180 220 360 440
70 100 180 220 360 440 720 880
100 140 360 440 720 880 1080 1320
140 170 540 660 1080 1320 1440 1760
170.200 720 880 1440 1760 1800 2200
After consultation between the manufacturer and the user, other axial loads and deviations can also be used. For example, depending on the bearing structure,
Lubricants can be used with higher loads to prevent roller and raceway slippage; or lower loads to avoid rollers, flanges
Possible damage from raceways.
5 Measurement and evaluation methods
5.1 Measured physical quantities
The physical quantity set during the measurement is the radial root mean square vibration velocity, vrms (μm/s).
5.2 Frequency domain
The vibration speed should be analyzed in one or more frequency bands, as set in the frequency range specified in Table 2.
If a specific frequency range is extremely important for the good operation of the bearing, other parameters can also be used after consultation between the manufacturer and the user.
Frequency range, see Table 3 for examples of commonly used specific frequency ranges.
The rotation frequency should be changed according to the proportional change of the filter frequency, the acceptable limit and the minimum measurement time. See Table 3 for an example.
Narrow-band spectral analysis of vibration signals is available as a complementary option.
Table 2 Frequency range of rotation frequency set at 900min-1
Rotation frequency
Nominal min.max.
Low frequency band (L) Mid frequency band (M) High frequency band (H)
Nominal frequency band
flow fupp flow fupp flow fupp
min-1 Hz Hz Hz
900 882 909 25 150 150 900 900 5000
Table 3 Example of frequency range without set rotation frequency
Rotation frequency
Nominal min.max.
Low frequency band (L) Mid frequency band (M) High frequency band (H)
Nominal frequency band
flow fupp flow fupp flow fupp
min-1 Hz Hz Hz
1800 1764 1818 50 300 300 1800 1800 10000
700a 686 707 20 120 120 700 700 4000
a When the rotation frequency is 700min-1, the cut-off frequency is rounded (the relationship between the rotation frequency and the rotation frequency is not strictly followed).
5.3 Measurement of pulses and sharp pulses
Surface defects and/or contamination in the tested bearings often cause pulses or sharp pulses of the time domain velocity signal.
Detection of sharp pulses is a complementary option. Different assessment methods can be used.
5.4 Test
When double-row spherical roller bearings and double-row tapered roller bearings are tested, an axial load should be applied from one side of the stationary ring, and then
Repeat the test by applying an axial load on the other side of the collar. Single-row tapered roller bearings should only be used in directions that can support axial loads
test.
When there are two inner or outer rings, they should be clamped to ensure repeatability.
When used for diagnostic analysis, multi-point measurements should be made at different angular positions of the bearing stationary ferrule relative to the sensor.
For acceptable bearings, the maximum vibration indication of the corresponding frequency band should be within the limit value negotiated by the manufacturer and the user.
The test duration is as specified in 6.5 of ISO 15242-1..2015.
When the set spindle rotation frequency is 900min-1, the measurement time should not be less than 1s.
6 Measurement conditions
6.1 Bearing measurement conditions
6.1.1 Pre-lubricated bearings
Pre-lubricated (grease-lubricated, oil-lubricated or solid-lubricated) bearings, including sealed bearings and dust-proof bearings, should be tested under delivery.
6.1.2 Non-prelubricated bearings
Because pollutants affect vibration levels, bearings should be cleaned effectively, taking care not to introduce pollutants or other sources of vibration.
Note. Some rust inhibitors can meet the lubrication requirements of vibration test. It is not necessary to remove the rust inhibitor at this time.
Non-prelubricated bearings should use kinematic viscosity between 10mm2/s ~ 100mm2/s and be finely filtered according to bearing type and size
The oil is fully lubricated.
During the lubrication process, a trial operation should be performed to make the lubricant in the bearing evenly distributed.
6.2 Test environmental conditions
Bearings should be tested in an environment that does not affect vibration.
6.3 Test device conditions
6.3.1 Stiffness of spindle/mandrel
The structure used to support and drive the main shaft (including the mandrel) of the bearing can not only transmit rotary motion, but also serve as a rigid parameter for the rotation axis
Photo Department. In the frequency band used, the transmission of vibration between the spindle/mandrel and the bearing is negligible compared to the measured vibration speed.
6.3.2 Loading mechanism
The structure of the loading mechanism used to apply a load to the bearing's measured ferrule should make the ferrule in all directions-radial, axial, angular or flex
The vibration of the curved type (depending on the bearing type) is essentially free, and can guarantee the normal operation of the bearing.
6.3.3 Bearing load and alignment accuracy
The constant applied axial load applied to the bearing stationary ring is specified in 4.2.
The deformation of the bearing ring due to the contact of various mechanical parts is negligible compared with the geometric accuracy of the tested bearing itself.
The position and direction of the applied axial load coincides with the rotation axis of the main shaft, and the deviation should be within the range specified in Figure 1 and Table 4. measuring
The method is as specified in Appendix A.
a Axis of applied load.
b Rotation axis of bearing inner ring.
c Radial and angular deviations between the applied load axis and the rotation axis of the bearing inner ring, see Table 4.
Figure 1 Deviation of the load axis from the rotation axis of the bearing inner ring
Table 4 Deviation of the load axis and the rotation axis of the bearing inner ring
Bearing outer diameter
> ≤
Radial deviation from the rotation axis of the bearing inner ring
max.
Angle deviation from the rotation axis of the bearing inner ring
max.
mm mm (°)
30 50 0.4
50 100 0.8
100 140 1.6
140 170 2.0
170.200 2.5
0.5
6.3.4 Axial position and measurement direction of the sensor
The positioning of the sensors is as follows.
Set axial position. on the outer surface of the stationary ferrule and on the plane corresponding to the middle of the contact between the loaded stationary ferrule raceway and the roller (for
For the stationary outer ring, see Figure 2). The manufacturer shall provide this data.
After the position of the sensor is determined, the maximum allowable axial position deviation is as follows.
--- When outer diameter D≤70mm. ± 0.5mm.
--- When outer diameter D> 70mm. ± 1.0mm.
Direction. perpendicular to the axis of rotation (for stationary outer ring, see Figure 3). In any direction, the deviation from the radial centerline should not exceed 5 °.
Explanation.
a --- sensor position and direction;
b --- axial load direction;
c --- the direction of the axial load applied to bring the inner rings together.
Figure 2 Vibration measurement --- the position set by the sensor
a In any direction.
Figure 3 Deviation from radial centerline
6.3.5 Mandrel
The outer diameter tolerance of the cylindrical surface of the mandrel used to install the bearing inner ring shall meet the requirements of class f5 in ISO 286-2
The geometric error ensures that the mandrel is inserted into the bearing bore with a slip fit.
The radial and axial runout should be controlled so as not to affect the test. Runout shall be performed using the device given in Appendix C of ISO 15242-1..2015.
Line measurement.
Appendix A
(Normative appendix)
Measurement of centering accuracy of applied axial load
The offset of the loading mechanism is measured using two dial gauges mounted on the bracket of the spindle (see Figure A.1).
The axial distance is a certain distance. The main shaft should rotate slowly, and the dial gauge can measure the radial runout of the loading piston.
The radial runout measured by the two dial gauges should be corrected according to the axial position of the test bearing so that it can meet the limits specified in Table 4.
The deviation values are compared.
Explanation.
1, 2 --- dial indicator;
3 --- mounting bracket for dial indicator;
4 --- Spindle;
5 --- loading mechanism.
Figure A.1 Measurement of centering accuracy with applied axial load
......