ZG28CrNiMo Alloy Cast Steel Girth Gear
Product Characteristics
ZG28CrNiMo is premium low-alloy cast steel with rational C-Cr-Ni-Mo composition, strictly controlled S&P impurity content per JB/T6402 standard. After full quenching & tempering heat treatment, mechanical property reaches tensile strength ≥700MPa, hardness 220–280HB, excellent comprehensive mechanical performance:
✅ High Toughness & Anti-impact: Resist instant startup shock & alternating load, avoid tooth fracture for heavy-load equipment;
✅ Superior Wear & Heat Resistance: Adapt to dusty, high-temperature harsh site of mine & cement plant, lower frequent replacement cost;
✅ Large-size Forming Capacity: Integral or split casting available, max finished OD up to 13 meters, customizable spur/helical tooth per drawing;
✅ Stable Dimensional Precision: UT/MT NDT inspection for casting defect control, smooth gear meshing, low equipment running noise & vibration;
✅ Easy MRO Service: Fine welding performance, convenient field repair for your after-market maintenance business.
Application Scope
Paper & Pulp: Rotary digester, pulp drum, debarking machine large girth gear
Suitable both for OEM complete machine supporting and MRO maintenance spare parts supply, fully fit your customer resource layout.
Cement Industry: Rotary kiln, raw material ball mill, clinker dryer core drive girth gear
Mining & Mineral: AG/SAG mill, rod mill, concentrator large transmission gear for ore grinding line
Metallurgy & Steel: Rotary heating furnace, slag mill, raw material processing equipment ring gear



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