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Wear-Resistant Ball Mill & Rod Mill Parts – Liners, End Covers, Girth Gears & Spherical Bearings
Sankuang Machinery provides comprehensive mill parts solutions, covering key wear parts and structural components for ball mills and rod mills.
Core Products & Processes:
1. Feed/Discharge End Covers
Material: ZG230-450 cast steel
Located at both ends of the mill shell, supported on bearings; supports material, shell, and grinding media
The fillet at the trunnion root is a stress concentration area requiring special attention
Single weight up to 300 tons, custom manufacturing based on drawings
2. Girth Gear
Material: Electric furnace steel or basic open-hearth steel; converter steel not permitted
Complies with ZG310-570 specifications: C≤0.60, Si≤0.60, Mn≤0.90, P≤0.04, S≤0.04
Blank requires normalizing + tempering heat treatment
Level 3 NDT inspection standard for blanks
3. Liners
High manganese steel (Mn13, Mn18), alloy steel
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%
Equipment: Large vertical lathes, gear hobbing machines, gear grinding machines, boring machines, milling machines.
Industries: Mining mineral processing, cement/building materials, metallurgy, chemical, power generation.
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