1 Scope
This standard specifies the structural types, boundary dimensions, technical requirements, measurement methods, inspection rules, marking, rust prevention and packaging of loose rib and stud-type double row full complement cylindrical roller bearing track rollers (hereinafter referred to as “bearings”).
This standard is applicable to production, inspection and customer acceptance of finished bearings.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this national standard. For dated references, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 197-2003 General Purpose Metric Screw Threads-Tolerances (ISO 965-1: 1998, MOD)
GB/T 272-1993 Rolling Bearing-Identification Code
GB/T 307.2-2005 Rolling Bearings - Measuring and Gauging Principles and Methods (ISO 1132-2: 2001, Rolling Bearings-Tolerances-Part 1: Measuring and Gauging Principles and Methods, MOD)
GB/T 3203-1992 Specification for Carburizing Steels of Bearings
GB/T 3098.1-2000 Mechanical Properties of Fasteners-Bolts, Screws and Studs (idt ISO 898-1: 1999)
GB/T 4199-2003 Rolling Bearings-Tolerances-Definitions (ISO 1132-1: 2000, Rolling bearings-Tolerances-Part 1: Terms and definitions, MOD)
GB/T 4604-2006 Rolling Bearings - Radial Internal Clearance (ISO 5753:1991, MOD)
GB/T 6930-2002 Rolling Bearings - Vocabulary (ISO 5593: 1997, IDT)
GB/T 7811-1999 Rolling Bearings-Symbols for Quantities
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 2974-2004 Rolling Bearings-Identification Code - Supplemental Regulations
JB/T 3573-2004 Rolling Bearings-Methods for the Measurement of Radial Internal Clearance
JB/T 3574-1997 Rolling Bearings-Marking for Products
JB/T 6641-2007 Rolling Bearings-Residual Magnetism and Its Assessment Method
JB/T 7051-2006 Rolling Bearing Parts-Methods for the Measurement and Assessment of Surface Roughness
JB/T 8881-2001 Specifications for Carburizing Heat Treatment of Rolling Bearing Parts
JB/T 8921-1999 Rolling Bearings and Commercial Parts-Inspection Rules
Contents
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Symbols
5 Designation Methods
6 Structural Types
7 Boundary Dimensions
8 Technical Requirements
9 Measurement Methods
10 Inspection Rules
11 Marking, Rust Prevention and Packaging
Figure 1 NUTR Type
Figure 2 NUKR Type
Table 1 Loose Rib Track Roller Bearings (Light Series)
Table 2 Loose Rib Track Roller Bearings (Heavy Series)
Table 3 Stud-type Track Roller Bearings
Table 4 Inner Ring
Table 5 Outer Ring
Table 6 Tolerances of Stud Diameter and Length
Table 7 Outer Ring Surface Roughness
Table 8 Surface Roughness of Stud
