JB/T 5932.5-2017Crawler dozers - Sealed tracks - Part 5: Track bolts (English PDF)
履带式推土机 密封式履带 第5部分：履带螺栓
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
April 12, 2017
Implementation date
January 1, 2018
Scope
JB/T 5932.5-2017 is the English-translated version of 履带式推土机 密封式履带 第5部分：履带螺栓.
JB/T 5932.5-2017 is the Chinese standard "Crawler dozers - Sealed tracks - Part 5: Track bolts". Its scope clause reads: This part of JB/T 5932 specifies the dimensions and designations, requirements, inspection rules, marking and packaging of track bolt for crawler tractor-dozer with thread sizes of M12×1.5 to M30×2.
This part is applicable to the seal track assembly of crawler tractor-dozer. Its clauses include dimension and designation; requirements.
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Document preview — JB/T 5932.5-2017
National Standard of the People's Republic of China
- ICS
- 53.100
- Replacing
- JB/T 5932.5-1991
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- Foreword
- 1 Scope
- 2 Normative References
- 3 Dimension and Designation
- 4 Requirements
- 5 Inspection Rules, Marking and Packaging
1 Scope
This part of JB/T 5932 specifies the dimensions and designations, requirements, inspection rules, marking and packaging of track bolt for crawler tractor-dozer with thread sizes of M12×1.5 to M30×2.
This part is applicable to the seal track assembly of crawler tractor-dozer.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 90.1 Fasteners - Acceptance Inspection
GB/T 90.2 Fasteners - Marking and Packaging
GB/T 196 General Purpose Metric Screw Threads - Basic Dimensions
GB/T 197 General Purpose Metric Screw Threads - Tolerances
GB/T 1237 Designation System for Fasteners
GB/T 3077 Alloy Structure Steels
GB/T 3098.1 Mechanical Properties of Fasteners - Bolts, Screws and Studs
GB/T 3103.1 Tolerances for Fasteners - Bolts, Screws, Studs and Nuts
GB/T 5779.1 Surface Discontinuities of Fasteners on Bolts, Screws and Studs for General Requirements
GB/T 5779.3 Fasteners - Surface Discontinuities - Bolts, Screws and Studs for Special Requirements
3 Dimension and Designation
3.1 Dimension
The main dimensions of track bolt are shown in Figure 1 and Table 1.
Dimensions in millimetres
Figure 1 Main dimensions of track bolt
Table 1 Main dimensions of track bolt
Dimensions in millimetres
Thread size d×P M12×1.5 (M14×1.5) M16×1.5 (M18×1.5) M20×2 (M22×2) M24×2 (M27×2) M30×2
- - - - M20×1.5 (M22×1.5) M24×1.5 (M27×1.5) M30×1.5
S Nominal dimension 18 21 24 27 30 34 36 41 46
Limit deviation 0
-0.43 0
-0.84 0
-1 emin 20.0 23.3 26.7 30.1 33.5 37.7 40.0 45.2 50.9
K Nominal dimension 12 13.5 15.5 16.5 19 20.5 22 24 26
Limit deviation ±0.55 ±0.65
SR 15 19 21 23 27 28 32 38 43 r 0.6 to 0.8 1.3 to 1.7 dW Nominal dimension 18 21 23 26 29 32 35 39 44
Limit deviation 0
-0.52 ds Nominal dimension 12 14 16 18 20 22 24 27 30
Limit deviation -0.095
-0.275 -0.110
-0.320 0
-0.210 b 24 26 28 30 32 34 36 38 40
L (for reference only) 34 43 57 60 66 69 75 84 96
43 52 66 66 69 - 78 87 -
- - 90 96 72 - 90
- - 75 -
87
Note: Sizes in parentheses shall not be adopted as much as possible.
3.2 Designation
The designation of track bolt shall meet the requirements of GB/T 1237.
Example:
Track bolt with thread size of M20×1.5, L = 69mm, and performance rating = 10.9, designated as:
Track bolt JB/T 5932.5-2017 M20×1.5×69-10.9
4 Requirements
4.1
The technical requirements of track bolt are shown in Table 2.
Table 2 Technical requirements of track bolt
Item Requirements Standard No.
Material 35CrMoA or other materials that meet the requirements of this table may be used GB/T 3077
Performance rating Level 10.9 Level 12.9 GB/T 3098.1
Hardness 32 HRC to 39 HRC 39 HRC to 44 HRC Hardness of Q sphere at the head 52 HRC to 60 HRC Effective depth of hardened layer of Q sphere at the head 3 mm to 5 mm, when d = 12 mm; 4 mm to 7 mm, when d >= 14 mm
Surface defects GB/T 5779.1 GB/T 5779.3 -
Thread 6 g GB/T 196, GB/T 197
Dimensions and geometric tolerances are not indicated Grade A, when d <= 24 mm; Grade B, when d > 24 mm GB/T 3103.1 4.2 Track bolt shall be treated with anti-rust, anti-corrosion and other surface treatments.
4.3
The macrostructure of track bolt shall have fiber streamline in line with the shape.
4.4
The tightening torques of track bolt are shown in Table 3.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
Similar standards
Editions of JB/T 5932.5
| Edition | Title | Revision | Status |
|---|---|---|---|
| JB/T 5932.5-2017 | Crawler dozers - Sealed tracks - Part 5: Track bolts | current edition | Current |
| JB/T 5932.5-1991 | Crawler dozers - Sealed tracks - Part 5: Track bolts | previous edition | Superseded |
This page sells the current edition, JB/T 5932.5-2017. Earlier editions are listed for reference only.
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Related Standards
GB/T 1237-2000 — Designation system for fasteners
GB/T 196-2025 — General purpose metric screw threads - Basic dimensions
GB/T 197-2018 — General purpose metric screw threads -- Tolerances
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JB/T 5932.5-2017
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