Grinding Balls / FORGED-BALL
Forged Mill Ball
High-impact forged steel ball used in mining, cement, and power plants. Different alloy grades ensure superior wear resistance and extended grinding performance.
Technical Specifications
Hardness
55–65 HRC (surface), 45–55 HRC (core)
Diameter Range
Φ20 mm – Φ150 mm
Material
60Mn, 65Mn, B2, B3, High Cr
Standards
GB/T 17445, ISO 3290, ASTM A532
Heat Treatment
Quenching & Tempering
Production Process
Hot forging, heat treatment, grinding, surface finishing
Key Features
- High impact toughness
- Superior wear resistance
- Homogeneous structure and density
- Crack and breakage resistance
- Heat-treated surface hardness
- Available in standard and custom diameters
Applications
- Mining and ore grinding mills
- Cement production plants
- Coal and clinker grinding systems
- Limestone and mineral preparation lines
- Power generation units
- Metallurgy and construction industries
Dimension Table
| Diameter | Weight | Hardness | Tolerance |
|---|---|---|---|
| 30 mm | 0.111 kg | Surface > 58 HRC, Core > 57 HRC | ±2 mm |
| 40 mm | 0.264 kg | Surface > 58 HRC, Core > 57 HRC | ±2 mm |
| 50 mm | 0.515 kg | Surface > 58 HRC, Core > 55 HRC | ±3 mm |
| 60 mm | 0.890 kg | Surface > 58 HRC, Core > 55 HRC | ±3 mm |
| 70 mm | 1.413 kg | Surface > 58 HRC, Core > 55 HRC | ±3 mm |
| 80 mm | 2.110 kg | Surface > 58 HRC, Core > 55 HRC | ±3 mm |
| 90 mm | 3.004 kg | Surface > 58 HRC, Core > 55 HRC | ±4 mm |
Technical Notes
- 01Produced by hot forging and heat treatment (quenching & tempering).
- 02Surface hardness: 55–65 HRC, Core hardness: 45–55 HRC.
- 03Each ball is tested for hardness and dimensional accuracy.
- 04Delivered with EN 10204 3.1 certification upon request.
Available Types
60Mn Forged Ball65Mn Forged BallB2 Forged BallB3 Forged BallHigh Chrome Forged Ball
Material Grades
60Mn
Chemical Composition: C: 0.55–0.65%, Mn: 0.70–1.00%
Hardness: 55–60 HRC
Cement and limestone grinding mills
65Mn
Chemical Composition: C: 0.65–0.75%, Mn: 0.90–1.20%
Hardness: 58–63 HRC
Metal ore and hard rock grinding
B2
Chemical Composition: C: 0.70–0.85%, Cr: 0.40–0.80%, Mn: 0.50–1.00%
Hardness: 60–65 HRC
Iron ore, coal and clinker grinding circuits
B3
Chemical Composition: C: 0.70–0.90%, Cr: 0.80–1.20%, Mo: 0.20–0.50%
Hardness: 62–66 HRC
High-impact and abrasive grinding environments
HIGH-CR
Chemical Composition: C: 1.00–1.30%, Cr: 10–12%
Hardness: 60–68 HRC
Gold, copper and highly abrasive ore grinding