1 Scope
This standard specifies the specifications for the vibration (velocity) of deep groove ball bearings which have the dimensions conforming to the requirements for diameter 0, 2 and 3 series specified in GB/T 276-1994, the nominal inside diameters of 3mm ~ 120mm, and the radial clearances conforming to the requirements for Groups 0, 2 and 3 clearance specified in GB/T 4604-2006, as well as the specifications for the vibration (velocity) peak value corresponding to such bearings in Groups V3 and V4 and has the inside diameter of 3mm ~ 60mm.
Group V specified in this standard is the basic requirement for the vibration (velocity) of common bearings, and the bearings are not to be marked with "V"; Groups V1, V2, V3 and V4 are applicable to the bearings of which the vibration (velocity) is subjected to certain requirements; Groups VF3 and VF4 are applicable to the bearings of which both the vibration (velocity) and the vibration (velocity) peak value are subjected to certain requirements.
This standard is applicable to the production inspection of the manufacturer and the acceptance of the user.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents are applicable. For undated references, the latest edition of the normative documents referred to applies.
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Codes for Groups
5 Measuring and Evaluating Methods
6 Technical Requirements
7 Inspection Rules
Appendix A (Normative) Measuring Methods for Vibration (Velocity) of Deep-groove Ball Bearing
A.1 Scope
A.2 Measurement Procedures
A.3 Measuring and Evaluating Methods
A.4 Conditions for Measurement
A.5 Requirements for Measuring System
A.6 Requirements for the Operator
Appendix B (Normative) Measuring Methods for Radial and Axial Circular Runouts of Mandrel
Appendix C (Normative) Measuring Methods for the Basic Vibration of Test Device
Figure B.1 Measurement of Mandrel Radial and Axial Circular Runouts of Mandrel
Figure C.1 Measurement of the Basic Vibration of Test Device
Table 1 Limits for Vibration (Velocity) and Vibration (Velocity) Peak Value of Deep-groove Ball Bearing with Inside Diameters Ranging 3mm ~ 60mm
Table 2 Limits for Vibration (Velocity) of Deep-groove Ball Bearing with the Inside Diameter Ranging 65mm ~ 120mm
Table A.1 Set Values for the Axial Load Applied to Bearings
Table A.2 Set Frequency Ranges
Table A.3 Basic Vibration of the Test Device
Table A.4 Deviations of the Load Axis to the Spin Axis of the Bearing Inner Ring
