Track link
Heavy-Duty Excavator & Dozer Track Link Chains
Upgrade your crawler undercarriage with OEM-grade track link assemblies and sealed-and-lubricated (SALT) track chains from Shengan Excavator Parts. Precision-forged from high-yield 35MnB alloy steel and induction-hardened, our track chains deliver superior tensile strength, zero pin-and-bushing galling, and exact pitch compatibility for Komatsu, Caterpillar, Hitachi, Kobelco, Daewoo, YuChai and Hyundai fleets.
Get a Fast Factory-Direct Track Link Quote with your machinery model, link pitch, or section count to receive instant technical CAD drawings, cross-references, and direct wholesale pricing!
-
Kobelco SK480 Track link Excavator undercarriage parts
-
Komatsu PC400-6 Track link Excavator undercarriage parts
-
Komatsu PC400-5 Track link Excavator undercarriage parts
-
Caterpillar CAT330 Track link Excavator undercarriage parts
-
Komatsu PC300-6 Track link Excavator undercarriage parts
-
Caterpillar CAT325 Track link Excavator undercarriage parts
-
Daewoo DH300-2 Track link Excavator undercarriage parts
-
Caterpillar CAT320 Track link Excavator Undercarriage Parts
-
Komatsu PC200-5 Track link Excavator Undercarriage Parts
Precision-Forged Track Link Chains & Track Assemblies
The track link chain is the structural backbone of any crawler undercarriage, bearing the entire weight of the machine while translating final drive torque into smooth travel motion. Internal pin and bushing wear causes pitch elongation (track stretching), leading to track jumping, sprocket tooth damage, and accelerated roller wear. Shengan track link supplier manufactures heavy-duty, forged track links and complete track group assemblies engineered to eliminate pitch stretch and withstand intense impact across quarrying, mining, and heavy earthmoving applications.
Track Link Sealing & Lubrication Technology Matrix
Different operating environments require specific internal pin-and-bushing sealing systems. We manufacture three primary track chain configurations:
| Track Chain Category | Sealing & Lubrication Mechanism | Wear Life & Maintenance | Recommended Applications |
| Dry Track Chain | Standard steel-on-steel bushing contact | Regular pin-turning required | Small mini-excavators & low-hour utility equipment |
| Sealed Track Chain (Grease) | Polyurethane seal rings with grease retention | Reduced internal grit penetration | Medium excavators in dirt, sand, and mud |
| Sealed & Lubricated Track (SALT) | Synthetic oil reservoir sealed with polyurethane/metal rings | Maximum wear life; eliminates internal pin galling | Heavy excavators (30–90T) & mining dozers (Cat D6–D11, Shantui SD22–SD32) |
Broad OEM Fleet Pitch Alignment: Cat, Komatsu, Volvo & Shantui
Pitch mismatch is a leading cause of premature undercarriage destruction. Shengan track link manufacturers produces track link chains matching exact OEM link height, bolt hole spacing, and pin diameters:
| OEM Machinery Brand | Popular Machinery Models Matched | Standard Track Link Pitch Specifications |
| Caterpillar (Cat) | Cat 320 (190mm), Cat 336 (215.9mm), Cat D6 (203mm), D8 (215.9mm) | Direct replacement for Cat SALT chains with polyurethane seals |
| Komatsu | PC200 (190mm), PC300 (215.9mm), PC400 (228.6mm), D65 (203mm) | Heavy-forged link rails matching original Komatsu pin diameters |
| Shantui | Shantui SD16 (203mm), SD22 (215.9mm), SD32 (228.6mm) | High-tensile dozer track groups built for severe pushing & ripping |
| Volvo & Hitachi | EC210, EC290, EC380 / ZX200, ZX330, ZX450 | Factory-assembled track groups with shoes pre-bolted upon request |
Superior Metallurgy & Deep Rail Hardening
Track links endure constant friction from track roller and front idlers while transmitting immense track tension. Every track chain produced by Shengan undergoes advanced metallurgical processing:
-
High-Yield 35MnB Forged Steel: Link rails are hot-forged from premium boron alloy steel, ensuring high yield strength and structural resistance against link rail cracking.
-
Deep Induction Rail Hardening: The top tread of the link rail is induction-hardened to a depth of 8mm–12mm (HRC 52–58), preventing rail surface grooving and mushrooming under heavy machine weight.
-
Precision-Bored Pin & Bushing Holes: CNC-machined pin and bushing bores guarantee zero-tolerance press fits, preventing pin walking, oil leakage, and bushing rotation.
Quality Control & Factory-Direct Value
Why bulldozer machinery distributors, rental fleets, and mining contractors source track chains from Shengan:
-
100% Automatic Assembly & Leak Testing: All SALT track chains are assembled using automated hydraulic presses and vacuum oil-filled to guarantee a 100% leak-proof seal.
-
Complete Track Groups Available: We supply bare track link chains or complete track assemblies pre-bolted with track shoes (grousers) to save installation time in the field.
-
Export-Ready Global Logistics: Secured with high-strength steel strapping, wrapped in protective anti-rust film, and mounted on heavy-duty steel-framed pallets for safe sea transport.