Standard No.:	GB/T 24610.3-2019
English Name:	Rolling bearings—Measuring methods for vibration—Part 3:Radial spherical and tapered roller bearings with cylindrical bore and outside surface
Chinese Name:	滚动轴承 振动测量方法 第3部分：具有圆柱孔和圆柱外表面的调心滚子轴承和圆锥滚子轴承
Chinese Classification:	J11    Rolling bearing
Professional Classification:	GB    National Standard
ICS Classification:	21.100.20 21.100.20    Rolling bearings 21.100.20
Issued by:	SAMR and SAC
Issued on:	2019-10-18
Implemented on:	2020-5-1
Status:	valid
Superseding:	GB/T 24610.3-2009 Rolling bearings—Measuring methods for vibration—Part 3:Radial spherical and tapered roller bearings with cylindrical bore and outside surface
Language:	English
File Format:	PDF
Word Count:	6000 words
Price(USD):	140.0
Delivery:	via email in 1 business day

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. GB/T24610 Rolling bearings—Measuring methods for vibration is divided into 4 parts: ——Part 1: Fundamentals; ——Part 2: Radial ball bearings with cylindrical bore and outside surface ——Part 3: Radial spherical and tapered roller bearings with cylindrical bore and outside surface; ——Part 4: Radial cylindrical roller bearings with cylindrical bore and outside surface This is Part 3 of GB/T 24610. This part is developed in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 24610.3-2009 Rolling bearings—Measuring methods for vibration —Part 3:Radial spherical and tapered roller bearings with cylindrical bore and outside surfaceand has the following changes with respect to GB/T 24610.3-2009: ——The lower cut-off frequency of the low band with the rotation frequency of 900min-1 is modified (see Table 2; Table 2 of Edition 2009); ——The table titled examples of frequency ranges for non-default rotational frequencies is added (see Table 3); ——“Peak measurement" is changed into "Measurement of pulse and sharp pulse" (see 5.3; 5.3 in Edition 2009); ——Diagrams for sensor setting positions and diagrams for double row tapered roller bearings are modified (see Figure 2; Figure 2 of Edition 2009); ——“Requirements for operators” is deleted (see 6.4 of Edition 2009); This part, by means of translation, is identical to ISO 15242-3: 2017 Rolling bearings—Measuring methods for vibration—Part 3: Radial spherical and tapered roller bearings with cylindrical bore and outside surface. The Chinese document consistent and corresponding with the normative international document in this part is as follows: ——GB/T 1800.2-2009 Geometrical product specifications (GPS)—Limits and fits—Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts (ISO 286-2:1988,MOD) ——GB/T 2298-2010 Mechanical vibration, shock and condition monitoring — Vocabulary (ISO 2041:2009, IDT) ——GB/T 4199-2003 Rolling Bearing —Tolerances—Definitions (ISO 1132-1:2000, MOD) ——GB/T 6930-2002 Rolling bearings—Vocabulary (ISO 5593: 1997, IDT) ——GB/T24610.1-2019 Rolling bearings—Measuring methods for vibration—Part 1: Fundamentals (ISO 15242-1:2015, IDT) This part was proposed by the China Machinery Industry Federation. This part is under the jurisdiction of National Technical Committee on Sliding Bearings of Standardization Administration of China (SAC/TC 98). The previous edition of this part is as follows: ——GB/T 24610.3-2009. Introduction Vibration in rotating rolling bearings can be of importance as an operating characteristic of such bearings. The vibration can affect the performance of the mechanical system incorporating the bearing and can result in audible noise when the vibration is transmitted to the environment in which the mechanical system operates, can lead to damages, and can even create health problems. Vibration of rotating rolling bearings is a complex physical phenomenon dependent on the conditions of operation. Measuring the vibration of an individual bearing under a certain set of conditions does not necessarily characterize the vibration under a different set of conditions or when the bearing becomes part of a larger assembly. Assessment of the audible sound generated by the mechanical system incorporating the bearing is further complicated by the influence of the interface conditions,the location and orientation of the sensing device, and the acoustical environment in which the system operates. Assessment of airborne noise that, for the purpose of GB/T 24610 (all parts), can be defined as any disagreeable and undesired sound, is further complicated by the subjective nature of the terms disagreeable and undesired. Structure-borne vibration can be considered the driving mechanism that ultimately results in the generation of airborne noise. Only selected methods for the measurement of the structure-borne vibration of rotating rolling bearings are addressed in the current edition of all parts of GB/T 24610. Vibration of rotating rolling bearings can be assessed by a number of means using various types of transducers and measurement conditions. No simple set of values characterizing the vibration of a bearing is adequate for the evaluation of the vibratory performance in all possible applications. Ultimately, a knowledge of the type of bearing, its application and the purpose of the vibration measurement (e.g. as a manufacturing process diagnostic or an assessment of the product quality) is required to select the most suitable method for measuring. The field of application for standards on bearing vibration is, therefore, not universal. However, certain methods have established a wide enough level of application to be considered as standard methods. This part serves to define the detailed method for assessing vibration of radial spherical and tapered roller bearings with cylindrical bore and outside surface on a measuring device. Rolling bearings—Measuring methods for vibration—Part 3:Radial spherical and tapered roller bearings with cylindrical bore and outside surface 1 Scope This part of GB/T 24610 specifies vibration measuring methods for double-row radial spherical roller bearings and single-row and double-row radial tapered roller bearings, with cylindrical bore and outside surface and a contact angle up to and including 45°, under established measuring conditions. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. ISO 286-2 Geometrical product specifications (GPS)—ISO code system for torlerances on linear sizes—Part 2:Tables of standard tolerance grades and limit deviations for holes and shafts. ISO 1132-1 Rolling bearings—Tolerances—Part 1:Terms and definitions ISO 2041 Mechanical vibration, shock and condition monitoring—Vocabulary ISO 5593 Rolling bearings—Vocabulary ISO 15242-1: 2015 Rolling bearings—Measuring methods for vibration—Part 1: Fundamentals 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 1132-1, ISO 2041, ISO 5593 and ISO 15242-1 apply. 4 Measurement process 4.1 Rotational frequency The default rotational frequency shall be 900 min−1 (15 s−1), with a tolerance . Other rotational frequencies and tolerances may be used by agreement between the manufacturer and the customer; e.g. it may be necessary to use a higher rotational frequency for bearings in the smaller size range in order to obtain an adequate vibration signal. Conversely, it may be necessary to use a lower rotational frequency for bearings in the larger size range to avoid possible roller, rib and raceway damage. 4.2 Bearing axial load The bearing load shall be in the axial direction with default values as specified in Table 1 Table 1 Default values for bearing axial load Bearing outside diameter D Double-row radial spherical roller bearings Single-row and double-row radial tapered roller bearings Contact angle ≤ 23° 23° < Contact angle ≤ 45° > ≤ Default values for bearing axial load min. max. min. max. min. max. mm N N N 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 Other axial loads and tolerances may be used by agreement between the manufacturer and the customer, e.g. depending on bearing design, rotational frequency and lubricant used It may be necessary to use a higher load to prevent roller/raceway slip, or a lower load to avoid possible roller, rib and raceway damage. 5 Measurement and evaluation methods 5.1 Physical quantity measured The default physical quantity to be measured is root mean square vibration velocity, νrms(µm/s), in the radial direction. 5.2 Frequency domain The vibration velocity shall be analysed in one or more bands with default frequency ranges as specified in Table 2. Other frequency ranges may be considered by agreement between the manufacturer and the customer in those instances where specific ranges have greater importance to successful operation of the bearing. Commonly used examples are listed in Table 3.

Foreword i Introduction iii 1 Scope 2 Normative references 3 Terms and definitions 4 Measurement process 4.1 Rotational frequency 4.2 Bearing axial load 5 Measurement and evaluation methods 5.1 Physical quantity measured 5.2 Frequency domain 5.3 Measurement of pulses and spike 5.4 Measurement 6 Conditions for measurement 6.1 Bearing conditions for measurement 6.2 Conditions of the measurement environment 6.3 Conditions for the measurement device Annex A (Normative) Measurement: external axial loading alignment