Ball Mill Components – AGICO Professional Manufacturer
Ball mill spare parts play a vital role in the grinding process. The quality of spare parts directly affects the service life and operation efficiency of the ball mill. AGICO is a professional manufacturer of cement equipment and spare parts, providing durable, wear-resistant, and precisely engineered ball mill spare parts for cement plants, mines, and power stations.
Ball Mill Spare Parts We Supply
Ball mills are used for grinding materials in cement, mining, and power plants. AGICO supplies all major spare parts.
Each ball mill component is engineered to maximize mill uptime, reduce maintenance costs, and improve grinding efficiency.
| Product | Material | Weight Range | Application |
|---|---|---|---|
| Mill Head / End Cover | High-Strength Cast Steel | up to 150 tons | Supports mill shell |
| Trunnion | High-Strength Cast Steel | up to 80 tons | Mill inlet/outlet |
| Mill Liner | High Manganese Steel, High Chromium Cast Iron, Alloy Steel | 50-2000 kg | Protects mill shell |
| Diaphragm / Grate Plate | High manganese steel | 100-1500 kg | Separates grinding chambers |
| Girth Gear | High Carbon Steel, Alloy Steel, Cast Steel | 5-80 tons | Drives the mill |
| Pinion Gear | Alloy steel | 500-5000 kg | Matches the girth gear |
| Bearing Housing | High-Strength Cast Steel | 100-5000 kg | Supports bearings |
| Grinding Ball | High Chromium Steel, Forged Steel, Low Alloy Steel | 20-100 mm diameter | Grinding media |
Grinding Media Balls
Grinding media (steel balls and steel segments) crush and grind materials inside the mill. AGICO offers high-hardness, wear-resistant grinding media with uniform size distribution. Materials include high chromium cast iron, forged steel (B2, B3), and low alloy steel. Our grinding media balls provide strong impact toughness, improving grinding efficiency and reducing operational costs.
Ball Mill Liners
Mill liners protect the mill shell from direct impact and wear caused by grinding media and materials. They also influence the motion of grinding media to enhance grinding efficiency. Materials include high manganese steel (Mn13, Mn18Cr2), high chromium cast iron (Cr15, Cr20, Cr26), and rubber.
- Shell liner – Installed on the inner wall of the ball mill barrel, protecting the main body of the barrel.
- Head liner / End cover liner – Installed on the grinding head end cover or barrel end cover, protecting the end cover from wear.
- Diaphragm liner / Grate plate – Separates different grinding chambers and controls material flow.
- Lifter bar – Installed between liners, enhancing the lifting effect on grinding media.
Diaphragms
Diaphragms separate the mill into compartments and control material flow. They ensure that grinding media sizes gradually decrease from the coarse grinding chamber to the fine grinding chamber. AGICO produces single-layer and double-layer diaphragms with strong structure and good ventilation.
Trunnion (Hollow Shaft)
The trunnion is a key part that supports and connects the mill cylinder. It is also the inlet and outlet passage for materials. AGICO uses high-strength cast steel with precise heat treatment to ensure high hardness and strong impact resistance. The trunnion supports the entire rotating part of the ball mill and bears the total weight of the cylinder, grinding media, and materials.
Head / End Cover
The end cover is located at both ends of the ball mill shell. It supports the material, cylinder, and grinding media. AGICO produces cast steel end covers with exact dimensions and high reliability, ensuring seamless integration with your existing ball mill equipment.
Girth Gear and Pinion
The girth gear and pinion drive the ball mill. The gear is the transmission part—if it is damaged, the whole machine will stop. AGICO manufactures precision-cut girth gears and pinions with high strength and excellent wear resistance. Gear types include helical, double helical, and straight tooth profiles available in diameters from 1 m to 6 m and weights up to 30,000 kg. Our gears extend service life by up to 25% compared to standard products.
Ball Mill Shell
The mill shell is the main cylindrical body of the ball mill. It holds the grinding media and materials and rotates on bearings. The shell must have high strength, good weldability, and precise roundness. AGICO manufactures ball mill shells using high-quality steel plates, with flanges and manholes as standard accessories
Why Choose AGICO Ball Mill Parts?
AGICO is a leading manufacturer of ball mill spare parts with decades of experience in the cement equipment industry. We serve cement plants, mining operations, and power stations worldwide with reliable, high-performance spare parts.
- Premium Quality Materials – Advanced high manganese steel, alloy steel, and high chromium cast iron ensure long service life.
- Custom Manufacturing – We produce parts according to your drawings or samples with precise dimensions.
- Strict Quality Control – Every product undergoes rigorous inspection to eliminate defects.
- Competitive Factory Price – Direct supply from the AGICO factory reduces your procurement cost.
- Fast Delivery – Ready stock for common parts; efficient production for custom orders.
- Professional Technical Support – Our engineers provide installation guidance and after-sales service.
Frequently Asked Questions (FAQ)
Q1: Can AGICO manufacture ball mill spare parts according to my drawings or samples?
Yes. AGICO offers custom manufacturing based on your drawings, samples, or technical specifications. We can produce parts with precise dimensions, required materials, and heat treatment to meet your exact needs.
Q2: What quality control measures do you apply to ball mill spare parts?
AGICO applies strict quality control at every stage—raw material inspection, in-process checks, and final testing before delivery. We use hardness testers, spectrometers, and dimensional measuring tools to ensure every part meets or exceeds industry standards.
Q3: What is the normal delivery time for ball mill spare parts?
Delivery time depends on the part type and order quantity. Standard parts from our stock: 7–15 days. Custom-made parts: 20–35 days after drawing confirmation. We will provide an exact schedule when you place your order.
Q4: Do you supply spare parts for ball mills from other brands?
Yes. AGICO produces replacement parts compatible with most ball mill brands. Our parts are manufactured to match or exceed OEM quality and fit, so you can use them as direct replacements.
Q5: How do I get a price for ball mill spare parts?
Please send us your part drawings, photos, or model numbers via email or online form. We will review your request and provide a competitive factory price within 24 hours.
Q6: What warranty do you offer on ball mill spare parts?
AGICO offers a standard warranty period of 12 months from the date of shipment. If any quality problem occurs under normal use, we will provide a replacement or repair free of charge.
Q7: Can you help with installation or technical issues?
Yes. Our technical team provides online guidance, installation drawings, and after-sales support. On-site installation service is also available upon request.
