This standard specifies the dimensions and technical requirements for track bolts for crawler bulldozers with thread specifications of M12×1.5~M30×2. JB/T 5932.5-1991 Crawler Bulldozer Track Bolts JB/T5932.5-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Crawler Bulldozer
Track Bolts
1 Subject Content and Scope of Application
JB/T5932.591
This standard specifies the dimensions and technical requirements for track bolts for crawler bulldozers with thread specifications of M12×1.5 to M30×2. This standard is applicable to the combined sealed crawler tracks of JB/T5932.1. Track bolts of other engineering machinery can refer to this standard. 2 Reference standards
Sealed crawler track assembly of crawler bulldozer
JB/T5932.1
GB3077
3 Dimensions
3.1 Dimensions
Mechanical properties of fasteners Bolts, screws and studs Basic dimensions of ordinary threads (diameter 1 to 600 mm) Tolerances and fits of ordinary threads (diameter 1 to 355 mm) Tolerances of fasteners Bolts, screws and nuts
Surface defects of fasteners - Bolts, screws and studs - General requirements Surface defects of fasteners - Bolts, screws and studs - Special requirements Acceptance inspection, marking and packaging of fasteners
Technical conditions for alloy structural steel
The dimensions of track bolts are shown in the figure below and the provisions of Table 1. 0.7±0.2
Approved by the Ministry of Machinery and Electronics Industry on December 17, 1991 2×45°
Implemented on July 1, 1992
Thread specification
Nominal sizewwW.bzxz.Net
Limit deviation
Nominal size
Limit deviation
Nominal size
Limit deviation
Nominal size
Limit deviation
(reference)
J B/T5932.591
M12X1.5(M14X1.5)M16×1.5
5M18×1.5)
(M22X2)
(M27X2)
M30×2
M20X1.5M22×1.5)M24X1.5
5M27×1.5)M30×1.5
Note: Avoid using the specifications in brackets as much as possible. 3.2 Marking example
Thread specification M20×1.5, L=69mm, performance grade 10.9, track bolts made of 35CrMoA: track bolts M20X1.5×69
JB/T5932.591
Note: See GB123788 for marking method.
Technical requirements
Technical requirements shall be in accordance with the provisions of Table 2.
Performance, etc.
Surface defects
Head Q spherical hardness
Head Q spherical effective hardened layer depth
35CrMoA (GB3077) or other materials that meet the requirements of this table10.9 (GB 3098.1)
34-40HRC
According to GB5779.1
52~60HRC
d=12mm:3~5mm
12.9 (GB3098.1)
38~43HRC
According to GB5779.3
d214mm:4~7mm
6g (GB196GB197)
Dimensions and geometric tolerances not specified
Surface treatment
Tightening torque
Macrostructure
Acceptance and packaging
Thread diameter d
Tightening torque
Additional instructions:
JB/T5932.5--91
Continued Table 2
d≤24mm: According to Class A; d>24mm: According to Class B (GB3103. 1) Apply anti-rust oil after oxidation treatment
Tightening torque is specified in Table 3
The macrostructure of the track bolt should have a fiber streamline that conforms to the shape according to GB90 (the depth of the head hardened layer is added to the spot check items) Table 3
117~156196~254313~392
460~558
137~156
225~294
This standard is proposed and managed by Tianjin Engineering Machinery Research Institute. This standard is drafted by Tianjin Engineering Machinery Research Institute. The main drafter of this standard is Hao Runcai.
882~1078980~11761372~16672579~3108647~804
10291265114713721608~19613020~3638941
Chinese People's
Mechanical Industry Standard
Extension Belt Bulldozer
Sealed Track Assembly and Parts
JB/T5932.1~5932.5—91
Mechanical Standard of the Ministry of Machinery and Electronics Industry Published by the Institute of Standardization (PO Box 8144, Beijing, zip code 100081)
Copyright reserved
Reproduction prohibited
Printed by Qinghe County Printing Factory, Hebei Province
Format 880×1230
First edition December 1991
Sheet 1-
Word count 40,000
First printing December 1991
Print run 00.001500 Price 2.80 yuan
Serial number 0494
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