Rolling Bearings - Full Complement Tapered Roller Thrust Bearings for Rolling Mill Screw-down Mechanisms
滚动轴承 轧机压下机构用满装圆锥滚子推力轴承
1. Scope
This standard specifies the structural type, identification code, boundary dimensions, technical requirements, inspection and measuring methods, inspection rules, marking and package for the full complement tapered roller thrust bearings for rolling mill screw-down mechanisms (hereinafter referred to as bearings).
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 307.2-2005 Rolling Bearings - Measuring and Gauging Principles and Methods (ISO 1132-2:2001, Rolfing Bearings - Tolerances - Part 2: Measuring and Gauging Principles and Methods, MOD)
GB/T 3203-1982 Specification for Carburizing Steels of Bearings
GB/T 8597-2003 Rolling Bearings - Rust Proof Packaging
GB/T 15822-1995 Methods for Magnetic Particle Testing
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 2974-1993 Rolling Bearing - Identification Code - Supplemental Regulations
JB/T 3574-1997 Rolling Bearings - Marking for Products
JB/T 664l-1993 Rolling Bearings - Residual Magnetism and Its Assessment Method
JB/T 8881-2001 Specifications for Carburizing Heat Treatment of Rolling Bearing Parts
JB/T 8921-1999 Rolling Bearings and Commercial Parts - Inspection Rules
3. Terms and Definitions
The following terms and definitions shall apply to this standard.
3.1 Spherical washer
Bearing washer with back face of convex spherical surface or concave spherical surface.
3.2 Housing washer
Another bearing washer opposite to the spherical washer.
4. Symbols (See Figure 1 and Figure 2)
Foreword I
1. Scope
2. Normative References
3. Terms and Definitions
4. Symbols (See Figure 1 and Figure 2)
5. Structural Type and Code
5.1 Structural Type
Figure 1 Type TTSV000
Figure 2 Type TTSX000
5.2 Identification Code
6. Boundary Dimensions
Table 1 Boundary Dimension
7. Technical Requirements
7.1 Material and Heat Treatment
7.2 Tolerance
Table 2 Tolerance
7.3 Surface Roughness
Table 3 Surface Roughness
7.4 Residual Magnetism
Table 4 Residual Magnetism Value
7.5 Other Technical Requirements
8. Inspection and Measuring Methods as well as Inspection Rules
8.1 Inspection and Measuring Methods
8.2 Inspection Rules
Table 5 Inspection Items
9. Marking
10. Packaging
