Sprocket (segment) bolts are high-strength fasteners (typically Grade 10.9 or 12.9, 40Cr steel) designed to secure crawler dozer and excavator drive segments. These components must withstand intense torque, vibration, and shear forces in harsh environments. Common sizes include M18*60, 7/8, and 3/4, with anti-seize recommended during installation.
Material and Strength: Manufactured from hardened alloy steel to provide superior fatigue resistance and tensile strength.
Common Applications: Primarily used on heavy machinery such as Caterpillar, Komatsu, Hitachi, and Doosan bulldozers and excavators.
Maintenance Note: During installation, it is crucial to use high-pressure lubricant (like copper coat anti-seize) on the threads and ensure proper torque to prevent loosening.
Key Part Numbers: Examples include 5P7665/7H3608 (CAT) and 09203-21860/01803-01824 (Komatsu).
Types: Often feature a flat head (plow bolt style) or hex head, depending on the specific sprocket segment design.
Surface Treatment: Often heat treated and coated (e.g., zinc plating) to enhance corrosion resistance and durability.
Measurement of Bolts Nuts
Dimension of Bolts Nuts
Dimension of Track Shoe Bolts & Nuts
No.
Size
No.
Size
No.
Size
No.
Size
No.
Size
2A3223
1/2″20UNF×47
101-32-11210
M12×1.25×40
3T6308
1″ ×14UNS×80
71428357
M22×1.5×62F
7G6442
7/8″ ×14UNF(33×34.5)
7H3596
9/16″ ×18UNF×51
79039443
M18×1.5×55F
6T2638
1″ ×14UNS×90
6Y9024
M22×1.5×67D
7G0343
1″×14UNS(38×40)
7H3597
5/8″ x18UNF×54
79004259
M18×1.5×60
6V1726
1″ ×14UNS×101
76007851
M22×1.5×70F
5P8221
1-1/8″×12UNF(42×43)
5H8756
5/8″ x18UNF×57″
20Y-32-11210
M20×1.5×56F
7T1000
1-1/8″ ×12UNF×96
208-32-51210
M24×1.5×65F
178-32-11220
M24×1.5(35×24)
1S1859
3/4″ 16UNF×55
9W3619
M20×1.5×55D
6S3419
1/2″ ×20UNF(19×15)
21M-32-11260
M24×1.5×72
195-32-11221
M27×1.5(41×27)
7H3598
3/4″ 16UNF×61
71401179
M20×1.5×62F
7K2017
9/16″ ×18UNF(22×18)
175-32-11210
M24×1.5×78
195-32-61221
M30×2.0(46×38)
6V1792
3/4″ 16UNF×61D
6Y0846
M20×1.5×63
1M1408
5/8″ ×18UNF(25×18)
195-32-11210
M27×1.5×82
4982325
M18×1.5(27×19)
7H3599
7/8″ 14UNF×67
71401192
M20×1.5×65F
1S1860
3/4″ 16UNF(28.6×19)
6Y7432
M27×1.5×90
9W3361
M20×1.5(28.6×22)
6V1723
7/8″ 14UNF×89
154-32-31210
M20×1.5×70
2S2140
7/8″ ×14UNF(33×22.5)
195-32-61210
M30×2.0×96
170-32-11222
M22×1.5(32×22)
2M5657
1″ ×14UNS×75
207-32-51210
M22×1.5×56F
1S6421
1″×14UNS(38×25)
571946
M12×1.5(19×15)
Dimension of Sprocket Segment Bolts & Nuts
No.
Size
No.
Size
No.
Size
No.
Size
No.
Size
3S8182
5/8″ -18UNF*47
2P9670
3/4″ -16UNF*4-27/64
7H3609
7/8″-14UNF
7T0999
1″-1/8″-12UNF*5-9/32
59973/31
M24*2*70
3P2274
5/8″ -18UNF*3-1/2
7H3608
3/4″ -16UNF
5P0233
1″-14UNS*76
7T0998
1″-1/8″-12UNF*6-29/64
79018427
M24*2*75
7H3607
5/8″ -18UNF
9S2727
7/8″14UNF*65
5P5422
1″-14UNS*92
59884/37
M20*1.5*65
178-27-11150
M24*1.5*79
3S0336
3/4″ 16UNF*61
7T1248
7/8″14UNF*76
6V1727
1″-14UNF*4-21/64
59927/31
M22*1.5*65
178-27-11150
M24*1.5*80
5P7665
3/4″ 16UNF*64
6V1724
7/8″-14UNF*3-3/4
8S1723
1″-14UNF*5-9/16
154-27-12320
M22*1.5*70
195-27-12632
M24*1.5*90
5P4130
3/4″ 16UNF*67
8S0395
7/8″-14UNF*4-25/32
6V1728
1″-14UNF*5-53/64
155-27-12181
M22*1.5*71
9S1838
3/4″ -16UNF*4-5/32
6V1725
7/8″-14UNF*5
2M5656
1″-14UNS
01803-02228
M22×1.5
Some Track Pitches We Produced and The Applicable Models
Shengde Machinery is a renowned complete track undercarriage manufacturer from China. Since 1999, company has been focused on track undercarriage system customization for over 26 years. Company is the official supplier of original equipment manufacturers including Sany, Zoomlion and Hitachi Malaysia. The track undercarriage products are widely used by tracked machinery types (crawlers) including excavator, loader, dozer, crane, paver, crusher, drilling rig, road milling etc. Company owns full track chassis customization ability including research, design, prototype, manufacture, test, inspect and global delivery. Production capacity has reached 20,000 sets per year.
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