This standard specifies the type and structural dimensions, technical requirements, test methods, inspection rules, packaging and transportation of sealed track pins (normal and locking types) and pin bushings (normal and locking types) for crawler bulldozers. This standard applies to combined sealed tracks of JB/T5932.1. JB/T 5932.4-1991 Crawler bulldozer sealed track pins and pin bushings JB/T5932.4-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Crawler Bulldozer
Sealed Track Pins and Bushings
Subject Content and Scope of Application
JB/T 5932.491
This standard specifies the type and structural dimensions, technical requirements, test methods, inspection rules, packaging and transportation of sealed track pins (normal and locking types) and bushings (normal and locking types) for crawler bulldozers. This standard applies to the combined sealed tracks of JB/T5932.1. 2 Reference standards
JB/T5932.1
GB3077
GB5617
GB9450
ZBJ04006
JB1673
Sealed track assembly of crawler bulldozer
Technical conditions for high-quality carbon structural steel
Technical conditions for alloy structural steel
Metal Rockwell hardness test method
Metal Brinell hardness Test method
Determination of effective hardened layer depth of steel after induction quenching or flame quenchingDetermination and verification of effective hardened layer depth of steel parts by carburizing and quenchingMagnetic particle inspection method for steel materials
Metallographic inspection of automobile carburized gears
Type and structural dimensions
3.1 Type and structural dimensions
3.1.1 The main dimensions of ordinary pins shall comply with the provisions of Figure 1 and Table 1, and the main dimensions of locking pins shall comply with the provisions of Figure 2 and Table 1.
Approved by the Ministry of Machinery and Electronics Industry on December 17, 1991Drawing 2
Implementation on July 1, 1992
Part Name
Ordinary Pin
Locking Pin
Pitch t
JB/T5932.491
Basic Dimensions
Limit Deviation
The main dimensions of ordinary pin sleeves and locking pin sleeves shall conform to the provisions of Figure 3 and Table 2. 3.1.2
Part Name
Ordinary Pin Bushing
Locking Pin Bushing
3.2 Marking
3.2.1 Marking Method
3.2.2 Marking Example
Basic Dimensions
JB/T5932.4-91
Limit Deviation
Pin Shaft Diameter dz (Pin Bushing Diameter d)
Track Pitch
Basic Dimensions
Limit Deviation
Basic Dimensions
Part Name (For ordinary type, " "Ordinary" two characters) Ordinary track pin with a pitch of t=216mm and a diameter of d=47mm: Limit deviation
JB/T5932.4-91
Regulation of track pin 216×47JB/T5932.4--91 Track pitch t=203.2mm, diameter d.=66.5mm Track locking pin sleeve: Track locking pin sleeve 203.2×66.5JB/T5932.4-91 Technical requirements and test methods
Material See the recommended grades in Table 3, and other materials that meet the requirements of Tables 4 and 5 may also be used. 4.1
Part name
The heat treatment requirements of the pin shall comply with the provisions of Table 4. Item
Surface hardness
Effective hardened layer depth
Core hardness
203.2,216
203.2,216
(GB699)
Technical requirements
56~62HRC
183~255HB
(Locking pin is 248~293HB)
257~315HB
The heat treatment requirements of the pin sleeve shall comply with the provisions of Table 5. Table 5
Surface hardness
Effective carburizing hardened layer depth
Core hardness
End hardness
Carbide in hardened layer
Martensite and retained austenite in hardened layer
Ferrite in core
Technical requirements
56~63HRC
(d; black skin part is 2.7~3.4)
30~42HRC
40~50HRC
≤6 level
≤5 level
≤4 level
Test method
GB9450
JB167 3
With pin sleeve
15CrMo or 20CrMo
(GB3077)
Test method
CB5617
Testing position
5 places on the outer diameter surface
Middle part of the shaft
(1/4)d. place
Testing position
Center of the wall thickness of 1/3 of the sleeve length on the inner and outer diameter surfaces and d. surface of the central section
Two places on both end faces
At the hardened layer
Center of the wall thickness of 1/3 of the sleeve length
Note: It should be within the model diagram facing inward (axial>10mm, by The end face hardness of 40～50HRC gradually transitions to the surface hardness of 5G～G3HRC. There shall be no cracks on the pins and sleeves, and they shall be inspected by magnetic particle inspection method (ZBJ04006) or other methods. 4.4.
The end angles of the pins and sleeves shall be free of burrs and burrs. Inspection rules, packaging and transportation
The factory sampling inspection items, classification and qualified quality level (AQL) of parts shall be in accordance with the provisions of Table 6. The sampling inspection plan shall be in accordance with Article 6.1.2 of JB/T5932.1. The type inspection rules shall be in accordance with Article 6.2 of JB/T5932.1. 17
JB/T5932.4—91||tt ||Surface hardness
Outer diameter d:
d: Surface roughness
Surface hardness
End face hardness
Inner diameter DsWww.bzxZ.net
Outer diameter d.
End face roughness
Other dimensions
Other dimensions
When parts are shipped, they are shipped in packaging boxes. Other packaging and transportation requirements shall comply with Articles 7.2 to 7.6 of JB/T5932.1. 5.2
Additional instructions:
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.
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