This standard specifies the dimensions and parameters of cylindrical helical tension springs (circular hook ring type). This standard applies to ordinary circular cross-section helical tension springs (circular hook ring type LⅡ) (hereinafter referred to as springs) subjected to variable loads of less than 1000 times and 1000~100000 times or impact loads. The diameter of the spring material is 0.5~8mm. GB/T 4142-2001 Dimensions and parameters of cylindrical helical tension springs (circular hook ring type) GB/T4142-2001 Standard download decompression password: www.bzxz.net

GB/T4142-2001
This standard is a revision of GB/T41421984 "Dimensions of Ordinary Cylindrical Helical Tension Springs (Round Hook Ring Type)" based on the latest design standards, material standards, dimension standards, technical condition standards and other relevant standards. During the revision, the valid parts of GB/T4142-1984 are retained, and the contents that are no longer suitable for the needs are revised according to the relevant new standards: Design calculation: The relevant calculations are recalculated according to GB/T1239.6-1992 (see Appendix A. 1
2 Marking: Change to letter representation (see Chapter 5). 3 Surface treatment: This standard no longer specifies specific methods (see 4.3). 4 Coiling ratio C: Increased from 12 to 22 (see Appendix A). This standard will replace GB/T4142-1984 from the date of entry into force. Appendix A of this standard It is the appendix of the standard.
Appendix B of this standard is a suggestive appendix.
This standard is proposed by the State Machinery Industry Bureau. This standard is under the jurisdiction of the National Spring Standardization Technical Committee. The drafting unit of this standard: Mechanical Science Research Institute. The main drafters of this standard: Yu Fang and Wu Guochuan. This standard was first issued in 1984 and revised for the first time in 2000. 363
National Standard of the People's Republic of China
Cylindricaliy coiled tension spring dimensions and parameters(Ring profile with hook)
1 Scope
This standard specifies the dimensions and parameters of cylindrical helical tension spring (round hook ring type) GB/T 4142-2001
Replaces GB/T4142-1984
This standard applies to ordinary round cross-section helical tension springs (round hook type L1) (hereinafter referred to as springs) subjected to variable loads of less than 10" and variable loads of 103~10° or impact loads. The diameter of the spring material is 0.5~8mm. 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T1239.1--1989 Technical conditions for cold-rolled cylindrical helical tension springs GB/T1358--1993 Dimension series of cylindrical helical springs GB/T1805-2001 Spring terminology
GB/T4357--1989 Carbon spring steel wire| |tt||GB/T13911--1992Methods for expressing metal plating and chemical treatment3Terminology code and type
Spring parameters and codes are as specified in Table 1.
Parameter name
Material diameter
Spring middle diameter
Spring outer diameter
Free length
Effective number of turns
Spring stiffness
Test load
Deformation under test load||tt ||Test shear stress
Working load
Approved by the State Administration of Quality and Technical Supervision on February 26, 2001 364
F,,F2,*,F.
Implemented on September 1, 2001
Parameter name
Deformation under working load
Initial tension
Unfolded length
Weight of spring single piece
Width of hook opening
GB/T 4142—2001
Table 1 (end)
fi.fa,...
Spring types are divided into type A and type B (see Figure 1). 3.2
Type A (n ends in 0.5)
Type B (n ends in 0.25)
Note: Type B should be indicated in the mark.
Figure 1 Spring type
3.3 The rest of the terms shall be in accordance with the provisions of GB/T1805. 4 Technical requirements
4.1 Materials
GB/T 4142—2001
The recommended spring material is carbon spring steel wire grade C with a diameter of 0.5~8mm in GB/T4357. If carbon spring steel wire grade B or D is used, it shall be indicated in the marking. 4.2 Manufacturing accuracy
The load, outer diameter and free length of the spring shall be selected in accordance with the provisions of GB/T1239.1. 4.3 Surface treatment
Springs made of carbon spring steel wire shall be subjected to surface oxidation treatment or phosphating treatment, but metal plating and other chemical treatments may also be performed. The marking method shall be in accordance with the provisions of GB/T13911. 4.4 The spring hook opening width α=D/3, or the hook length of the hook shall be in accordance with the provisions of GB/T1239.1. 4.5 Other technical requirements for springs shall comply with the provisions of GB/T1239.1. 5 Marking
5.1 Marking method
The marking of springs shall consist of spring code, type code, specification, accuracy code, rotation code, standard number, material classification or material grade and surface treatment marking method, as follows: dXD×Hu-
5.2 Marking example
GB/T 4142
Surface treatment marking method should be in accordance with the provisions of
GB/T13911
Material classification or material brand
Standard number
Direction of rotation code (left-handed should be indicated as left, right-handed can be omitted)-precision code (1, 2 grade precision manufacturing should be indicated as 1" or 2", 3 grade can be omitted)
Specification (mm)
Type code "A" or "B"
Cylindrical helical tension spring code
Type II spring, material diameter is 2.5mm, spring middle diameter is 16mm, free length is 78.9mm, material is carbon spring steel wire C grade, surface electroplated zinc treatment A type left-hand spring: L1 A2.5X16×78.9 left GB/T 4142-Ep·ZnL1 spring, material diameter is 1mm, spring center diameter is 5mm, free length is 16.7mm, load, outer diameter, free length accuracy is 2 levels, material is carbon spring steel wire grade D, surface oxidation treatment B-type spring: LI B1X5X16.7-2 GB/T 4142 D-Ct 06 Spring dimensions and parameters
The main dimensions and parameters of the spring shall be in accordance with the provisions of Table 2. For calculation instructions, see Appendix A (Appendix to the standard). Note: The F values ​​listed in the table are not included in the assessment items. 366
Material diameter
Spring center diameter
Initial tension
Test load
GB/T 4142---2001
Effective number of turns
Free length Spring stiffness
Test load Open length
Lower deformation
Spring single piece
Material diameter
Spring center diameter
Initial tension
GB/T 4142-2001
Table 2 (continued)
Effective number of turnsFree length
Test load
Spring stiffness
Test load【Unfolded length
Lower deformation
Spring single piece
kg(10)
Material diameter
Spring middle diameter
Initial tension
Test load
GB/T 4142—2001
Table 2 (continued)
Free length
Effective number of turns
Spring stiffness
Test load
Lower deformation
Expanded length
Spring single piece
kg(10\\)
Material diameter
Spring middle diameter
Initial tension
Test load
GB/T 4142—
Table 2 (continued)
Free length
Effective number of turns
Spring stiffness
Test load
Lower deformation
Expanded length
Spring single piece
kg(10 *)
Material diameter
Spring middle diameter
Initial tension
GB/T4142-2001
Table 2 (continued)
Test load
Effective number of turns Free length Spring stiffness
Test load
Lower deformation
Expanded length
Spring single piece
kg(10-3)
Material diameter
Spring middle diameter
Initial tension
Test load
GB/T 4142---2001
Table 2 (continued)
Effective number of turnsFree length
Spring stiffnessTest loadExpanded length
Spring single piece
Lower deformation
kg(10-3)
Material diameter
Spring middle diameter
Initial tension
Test load
GB/T 4142-2001
Table 2 (continued)
Effective number of circles
Free length
Spring stiffness
Unfolded length
Test load
Lower deformation
Spring single piecewww.bzxz.net
kg(10)
Material diameter
Spring middle diameter
Initial tension
GB/T 4142--2001
Table 2 (continued)
Test loadEffective number of circles
Free length
Spring stiffness
Test load!
Unfolded length
Lower deformation
Spring single piece
kg(10-)
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