CementKiln Drive & Mechanical
Kiln pinion casting (small gear driving girth gear)
Pinion is the faster, smaller gear – higher tooth contact stress. Some large kilns use FORGED pinions for higher toughness. Smaller kilns: cast pinion acceptable. Hardness: pinion typically harder than girth gear (HB 220–280).
Specifications
Material
Cast Steel ASTM A148 Gr105-85 / Gr120-95; Alloy steel (some prefer forged pinion at large kilns)
Material Class
Cast SteelAlloy Steel
Applicable Standards
ASTM A148 Gr105
Common Processes
Resin sand; Q&T
NDT & Inspection
UT; MT; gear tooth profile CMM; hardness; dimensional
Typical Specs & Notes
Pinion is the faster, smaller gear – higher tooth contact stress. Some large kilns use FORGED pinions for higher toughness. Smaller kilns: cast pinion acceptable. Hardness: pinion typically harder than girth gear (HB 220–280).