Heavy EquipmentUndercarriage & Ground Engagement
Track link / chain link casting (crawler undercarriage)
High wear and impact environment. Hardness specification tightly controlled – too soft = wear out, too hard = brittle fracture. Pin pitch cumulative tolerance critical for track assembly.
Specifications
Material
Alloy cast steel (Cr-Mn-B grade); Boron steel equivalent for wear and toughness
Material Class
Cast Steel
Service Conditions
impact loading
Common Processes
Sand casting (resin / no-bake); water quench + temper heat treat for hardness
NDT & Inspection
Hardness (42–48 HRC core / surface per OEM spec); MT; dimensional (pin hole, pitch geometry); VT; Charpy impact
Typical Specs & Notes
High wear and impact environment. Hardness specification tightly controlled – too soft = wear out, too hard = brittle fracture. Pin pitch cumulative tolerance critical for track assembly.
⚠ Caveats
Pin pitch cumulative tolerance critical for track assembly.