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Complete Ball Mill Wear Parts Supply | Liners/End Covers/Girth Gears/Spherical Bearings · Custom Mat
Sankuang Machinery provides comprehensive mill parts solutions, covering key wear parts and structural components for ball mills, rod mills, and AG/SAG mills.
Core Products & Specifications:
1. Feed/Discharge End Covers
Material: ZG230-450 cast steel
Located at both ends of the mill shell, supported on bearings
Stress concentration area at the trunnion root fillet
Single weight up to 300 tons, custom manufacturing based on drawings
2. Girth Gear
Material: Electric furnace steel or basic open-hearth steel (per ZG310-570)
Chemical composition: C≤0.60, Si≤0.60, Mn≤0.90, P≤0.04, S≤0.04
Blank requires normalizing + tempering, Level 3 NDT inspection
3. Liners
Materials: High manganese steel (Mn13, Mn18), modified high manganese steel, multi-alloy steel, high/low chromium cast iron
Material selection based on dry/wet grinding conditions and mill diameter
Optimized casting and heat treatment for wear resistance and impact toughness
4. Spherical Bearings (Trunnion Bearings)
Babbitt alloy casting + high-precision scraping, contact area ≥70%
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