1 Scope
This standard specifies the technical requirements for finished products of double row cylindrical roller bearings for spindles of machines (hereinafter referred to as bearings) with boundary dimensions consistent with GB/T 285, tolerance grade of Grades 5, 4 and 2 and that of Grade SP and Grade UP.
This standard is applicable to double row cylindrical roller bearings for spindles of machines.
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 to (excluding amending errors in the text), 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 edition of the normative document is applicable. For undated references, the latest edition of the normative document applies.
GB/T 285-1994 Rolling Bearings - Double Row Cylindrical Roller Bearings - Boundary Dimensions
GB/T 307.1-2005 Rolling Bearings - Radial Bearings - Tolerances (ISO 492:2002, MOD)
GB/T 307.2-2005 Rolling Bearings - Measuring and Gauging Principles and Methods (ISO 1132-2:2001, Rolling Bearings - Tolerances - Part2: Measuring and Gauging Principles and Methods, MOD)
GB/T 307.3-2005 Rolling Bearings - General Technical Regulations
GB/T 4604-1993 Rolling Bearings - Radial Internal Clearance (eqv ISO 5753:1991)
GB/T 4661-2002 Rolling Bearings - Cylindrical Roller
GB/T 7811-1999 Rolling Bearings - Symbols for Quantities
GB/T 18254-2002 High-carbon Chromium Bearing Steel
JB/T 1255-2001 Specification for Heat-treatment of Rolling Bearing Parts Made from High Carbon Chromium Steel
JB/T 3573-2004 Rolling Bearings - Measuring Methods for Radial Internal Clearance
JB/T 3574-1997 Rolling Bearings - Marking for Products
JB/T 7050-1993 Rolling Bearings - Assessment Methods for Cleanliness
JB/T 7051-1993 Rolling Bearing Parts - Methods for the Measurement and Assessment of Surface Roughness
JB/T 8921-1999 Rolling Bearings and Commercial Parts - Inspection Rules
Contents
Foreword I
1 Scope
2 Normative References
3 Symbols
4 Technical Requirements
4.1 Material and Heat Treatment
4.2 Tolerance
4.3 Surface Roughness
4.4 Auxiliary Rolling Element
4.5 Radial Internal Clearance
4.6 Vibration and Noise
4.7 Cleanliness
4.8 Others
5 Measuring Method
6 Inspection Rule
7 Marking
8 Packaging
Table 1 Grade SP Inner Ring Tolerance
Table 2 Grade SP Outer Ring Tolerance
Table 3 Grade UP Inner Ring Tolerance
Table 4 Grade UP Outer Ring Tolerance
