Mill Grinding Balls, Grinding Cylpebs and Grinding Rods

Hot Rolling Steel Cylpebs Forged Cylpebs
PRODUCT PARAMETERS
Type: Hot Rolling Steel Cylpebs
Demisions:(mm):
20×30 | 25×35 | 30×40 | 35×45 | 40×50 | 45×55 | 50×60 | 55×65 | 60×70 |
Application: mining, cement production, power plants, chemistry industries
High hardness
Good wear resistance
High impact toughness
Rear earth grinding ball available (HRC up to 60-65)
Description
Size and Tolerance:
Size (mm) | 20×30 | 25×35 | 30×40 | 35×45 | 40×50 | 45×55 | 50×60 | 55×65 | 60×70 |
Diameter tolerance(mm) | ±1 | ||||||||
Length tolerance(mm) | ±2 |
Technical specification:
Advantages
- Increased Surface Contact: Their cylindrical shape provides more linear contact with material, improving grinding efficiency.
- Enhanced Durability: The hot rolling and heat treatment process results in high hardness (HRC 60–65) and impact toughness, reducing wear rates.
- Lower Consumption: Longer operational lifespan translates to cost savings in mining and cement industries.
Material | Breakage rate | Hardness(HRC) | Impact value(J/cm2 ) | Drop times(times) | Micro structure |
45# | <1% | ≥45 | ≥12 | ≥8000 | M+C |
60Mn | <1% | ≥55 | ≥12 | ≥12000 | M+C |
65Mn | <1% | ≥58 | ≥12 | ≥12000 | M+C |
B-2 | <1% | ≥60 | ≥12 | ≥15000 | M+C |

Chemical composition
Material | C(%) | Si(%) | Mn(%) | Cr(%) | Cu(%) | Mo(%) | P(%) | S(%) | Ni(%) |
45# | 0.42-0.50 | 0.17-0.37 | 0.5-0.80 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
60Mn | 0.57-0.65 | 0.17-0.37 | 0.70-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
65Mn | 0.62-0.70 | 0.17-0.37 | 0.90-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
B-2 | 0.70-0.80 | 0.17-0.37 | 0.70-0.80 | 0.50-0.60 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
Manufacturing Process
Heating: Steel billets are heated to 1,100–1,200°C to reach a malleable state.
Hot Rolling: The heated steel is passed through rollers to form cylindrical shapes with rounded edges, ensuring uniformity.
Heat Treatment: After rolling, Cylpebs undergo quenching (rapid cooling) and tempering to optimize hardness (for wear resistance) and toughness (to withstand impact).

Applications:
Mining: Grinding ores (e.g., copper, gold, iron) in ball mills.
Cement Production: Crushing clinker and raw materials.
Coal Processing: Pulverizing coal in thermal power plants.
Chemical Industry: Fine grinding of minerals and pigments.
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Packing & Shipping




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FAQs
Forged grinding balls are made by heating and shaping high-carbon or alloy steel under high pressure, resulting in superior hardness, impact resistance, and longevity. Cast grinding balls are produced by melting and pouring metal into molds, offering a cost-effective solution for less demanding grinding environments. Forged balls excel in high-impact mining operations, while cast balls are ideal for lower-impact scenarios like cement or coal grinding.
Choose forged balls for high-impact, large-scale mining (e.g., copper, gold) where durability and low wear rates are critical.
Choose cast balls for cost-sensitive applications with softer materials (e.g., limestone, coal) or smaller operations.
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Yes! We offer fully customizable solutions. Specify your required diameter (e.g., 20–150mm for balls), hardness (HRC 50–65), and material composition to match your mill’s operating conditions (e.g., ore hardness, rotation speed).
- Grinding Rods: Made from high-carbon steel or alloy steel, heat-treated for optimal wear resistance and toughness.
- Mine Liners: Constructed from high-manganese steel, chromium steel, or composite alloys to withstand abrasion and impact in mills.
We ship globally, with major clients in South America, Africa, Australia, North America, and Southeast Asia.
Standard Products: 15–25 days after order confirmation.
Customized Orders: 25–35 days, depending on specifications.
Shipping: Delivery times vary by destination
Grinding balls/rods: Packed in steel drums or bulk bags with anti-rust treatment.
Mine liners: Wooden crates or pallets with waterproof wrapping.
We enforce strict quality control:
100% surface defect checks before shipment.
Raw material inspection (spectral analysis).
Hardness and impact testing (Rockwell, Charpy tests).
We enforce strict quality control:
100% surface defect checks before shipment.
Raw material inspection (spectral analysis).
Hardness and impact testing (Rockwell, Charpy tests).