Heavy EquipmentOff-Highway & Mining Truck
Spindle casting (off-highway truck, ~2008 lbs)
Bearing seat tolerances critical (H7/k6). Fatigue life design – casting soundness essential. PPAP / FAI for first article approval.
Specifications
Material
Low alloy cast steel 8630 / A148 Gr105-85 (high strength); some designs in Cr-Mo steel
Material Class
Cr-MoCast SteelLow alloy
Common Processes
Resin sand / no-bake; Q&T heat treatment
NDT & Inspection
UT (ASTM E446 Level 2); MT; dimensional CMM (bearing seat diameters, spindle taper); hardness Brinell
Typical Specs & Notes
Bearing seat tolerances critical (H7/k6). Fatigue life design – casting soundness essential. PPAP / FAI for first article approval.
⚠ Caveats
Bearing seat tolerances critical (H7/k6).