1 Scope
This standard specifies the technical requirements, measurement methods, inspection rules, packaging and marking of insert bearings (hereinafter referred to as “bearings”) and eccentric locking collars.
This standard is applicable to the production and inspection by manufacturers and customer acceptance of the bearings and eccentric locking collars whose boundary dimensions meeting the requirements of GB/T 3882.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 307.2-2005 Rolling Bearings-Measuring and Gauging Principles and Methods (ISO 1132-2: 2001, Roiling bearings-Tolerances-Part 2; Measuring and gauging principles and methods, MOD)
GB/T 699-1999 Quality Carbon Structural Steels
GB/T 2828.1-2003 Sampling Procedures for Inspection by Attributes-Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection (ISO 2859-1: 1999, IDT)
GB/T 3882-1995 Rolling Bearings-Insert Bearings and Eccentric Locking Collars-Boundary Dimensions (neq ISO 9628: 1992)
GB/T 4199-2003 Rolling Bearings-Tolerances-Definitions (ISO 1132-1: 2000, Rolling bearings-Tolerances-Part 1: Terms and definitions, MOD)
GB/T 6930-2002 Rolling Bearings-Vocabulary (ISO 5593: 1997, IDT)
GB 7324-1994 General Purpose Lithium Lubricating Grease
GB/T 8597-2003 Rolling Bearings-Rust Proof Packaging
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 3574-1997 Rolling Bearings-Marking for Products
JB/T 5304-2007 Rolling Bearings-Insert Bearings-Radial Internal Clearance
JB/T 6641-2007 Rolling Bearings-Residual Magnetism and Its Assessment Method
JB/T 7361-2007 Rolling Bearings-Test Method for Hardness of Parts
Contents
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Symbols (see Figure 1~Figure 7)
5 Technical Requirements
5.1 Materials and Heat Treatment
5.2 Tolerance
5.3 Surface Roughness
5.5 Residual Magnetism
5.6 Marking
5.7 Others
6 Measurement Methods
6.1 Measurement of Accuracy
6.2 Radial Internal Clearance
6.3 Hardness
6.4 Residual Magnetism
7 Inspection Rules
8 Marking
9 Packaging, Storage and Transportation
Figure 1 Bearing with Jackscrew (UC Type)
Figure 2 Bearing with Eccentric Locking Collar (UEL Type)
Figure 3 Tapered Bore Bearing (UK Type)
Figure 4 Bearing with Jackscrew (UB Type)
Figure 5 Bearing with Eccentric Locking Collar (UE Type)
Figure 6 Eccentric part of Inner Ring of Bearing with Eccentric Locking Collar
Figure 7 Eccentric Locking Collar
Figure 8 Measurement of Inner Ring Eccentricity
Table 1 Cylindrical Bore Inner Ring
Table 2 Tapered Bore Inner Ring
Table 3 Outer Ring
Table 4 Eccentric Locking Collar
Table 5 Surface Roughness Value
Table 6 Sampling Inspection Items for Finished Bearings and Eccentric Locking Collars
