Low-Breakage Forged Steel Grinding Balls with Stable Surface and Core Hardness
Product Specifications
- model
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Product Highlights
- Low-Breakage Performance: Controlled forging and heat treatment help reduce premature cracking and breakage during grinding.
- Stable Surface & Core Hardness: Controlled heat treatment provides a stable hardness distribution for consistent wear and grinding performance.
- Dense Forged Structure: The forged structure provides good strength and toughness for repeated impact inside grinding mills.
- Good Impact Toughness: Suitable toughness helps the grinding balls withstand repeated impact and reduce the risk of premature breakage.
- Consistent Wear & Lower Media Loss: Stable hardness and low-breakage performance help maintain predictable wear and reduce unnecessary grinding media loss.
Product Attributes
- Customization
- Available
- Material
- Steel
- Content
- >90%
- Model NO.
- 20-150mm
- Usage
- Grind
- Processing Type
- Forged
- Size
- 20-150 mm
- Color
- Others
- Customized
- Non-Customized
- Product Name
- Forged Steel Ball
- B2 Cr
- 0.2-0.6
- Surface Hardness
- 57-65 HRC
- Core Hardness
- 50-63 HRC
- Packaging Details
- Iron Drum/Ton Bag
- Standard
- ISO 9001; ISO 14001; ISO 45001;
- Business Type
- Factory
- Transport
- by Sea
- Application
- Ball Mill Grinding
- Application 2
- Fine and Secondary Grinding
- Application 3
- Continuous Grinding Operations
- Application 4
- Mining and Cement Grinding
- Transport Package
- Drum/Ton Bag
- Specification
- 20-150 mm
- Trademark
- JUNDA
- Origin
- China
- HS Code
- 7326110000
- Production Capacity
- 5000tons/Month
- Package Size
- 75.00cm * 75.00cm * 70.00cm
- Package Gross Weight
- 1002.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Low-Breakage Forged Steel Grinding Balls with Stable Surface and Core Hardness
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Low-Breakage Forged Steel Grinding Balls with Stable Surface and Core Hardness -
Low-Breakage Forged Steel Grinding Balls with Stable Surface and Core Hardness -
Low-Breakage Forged Steel Grinding Balls with Stable Surface and Core Hardness -
Low-Breakage Forged Steel Grinding Balls with Stable Surface and Core Hardness -
Low-Breakage Forged Steel Grinding Balls with Stable Surface and Core Hardness -
Low-Breakage Forged Steel Grinding Balls with Stable Surface and Core Hardness -
Low-Breakage Forged Steel Grinding Balls with Stable Surface and Core Hardness
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Product Description
Designed to Reduce Ball Breakage and Maintain Consistent Grinding Performance
JUNDA low-breakage forged steel grinding balls are manufactured through controlled forging and heat treatment to achieve stable surface and core hardness, good impact toughness and consistent wear performance.
The controlled hardness distribution helps reduce the risk of premature cracking and breakage, while the dense forged structure supports reliable performance during continuous grinding operations.
Available in multiple sizes and material grades, JUNDA grinding balls can be selected according to mill type, ball diameter, feed material and operating conditions.
Why Does Grinding Ball Breakage Matter?
Grinding ball breakage can cause more than simple media loss. Broken grinding balls may change the effective ball charge, alter grinding conditions and increase the amount of irregular metal fragments in the mill circuit.
For continuous grinding operations, maintaining the structural integrity of grinding media is therefore important for stable grinding performance and predictable media consumption.
JUNDA low-breakage forged steel grinding balls are designed to reduce premature breakage through controlled material selection, forging, heat treatment and hardness inspection.
Why does stable core hardness matter?
Stable core hardness helps maintain the internal strength of the ball when it is repeatedly subjected to impact inside the mill. Excessive hardness without sufficient internal toughness may increase the risk of cracking under severe impact conditions.
| Size (mm) | Inch | Weight (kg) | Tolerance (mm) | Grade Options | Surface HRC | Core HRC | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ø20 | 3/4" | 0.037 ± 0.005 |
|
|
60-65 |
|
|||||
| Ø25 | 1" |
|
|
|
60-65 |
|
|||||
| Ø30 | 1-1/4" | 0.130 ± 0.020 |
|
|
60-65 |
|
|||||
| Ø40 | 1-1/2" |
|
|
60Mn / B2 |
|
58-62 | |||||
| Ø50 | 2" | 0.600 ± 0.050 | ±1.5 | 60Mn / B2 | 59-63 | 57-61 | |||||
| Ø60 |
|
1.000 ± 0.050 | ±1.5 | 60Mn / B2 | 59-63 | 57-61 | |||||
| Ø65 |
|
1.300 ± 0.050 | ±1.5 | 60Mn / B2 | 59-62 | 57-60 | |||||
| Ø70 | 2-3/4" |
|
±2 | 60Mn / B2 | 58-62 | 57-60 | |||||
| Ø80 |
|
2.100 ± 0.060 | ±2 | 60Mn / B2 | 58-62 | 57-60 | |||||
| Ø90 | 3-1/2" | 3.000 ± 0.070 | ±2 | 60Mn / B2 | 58-61 | 55-59 | |||||
| Ø100 | 4" | 4.100 ± 0.150 | ±2 | 60Mn / B2 | 57-61 |
|
|||||
| Ø110 |
|
|
±3 | 60Mn / B2 | 57-61 |
|
|||||
| Ø120 |
|
7.100 ± 0.200 | ±3 | 60Mn / B2 | 57-60 | 52-56 | |||||
| Ø125 | 5" | 8.100 ± 0.300 | ±3 | 60Mn / B2 | 57-60 |
|
|||||
| Ø130 | 5-1/8" | 9.100 ± 0.300 | ±3 | B2 | 57-60 | 52-55 | |||||
| Ø140 | 5-1/2" |
|
±3 | B2 | 57-60 |
|
|||||
| Ø150 |
|
|
±3 | B2 | 57-60 | 50-54 |
| Chemical Composition | ||||||||||
| Grade | C% | Si% |
|
|
|
|
||||
| C45 | 0.42-0.50 | 0.17-0.37 |
|
≤0.25 |
|
≤0.035 | ||||
| 60Mn | 0.57-0.65 | 0.17-0.37 | 0.70-1.00 | ≤0.25 | ≤0.035 | ≤0.035 | ||||
| B2 | 0.72-1.03 |
|
0.30-1.20 | 0.2-0.6 | ≤0.035 | ≤0.035 | ||||
Looking for Low-Breakage Grinding Balls?
→ Get a Grinding Ball Recommendation
Applications
Ball Mill Grinding
Suitable for selected ball mill applications where stable hardness, good toughness and low breakage are important.
Fine and Secondary Grinding
Smaller grinding balls can provide a larger grinding surface area and are commonly considered for finer grinding stages, subject to mill design and feed characteristics.
Continuous Grinding Operations
Suitable for continuous grinding circuits where predictable wear and reduced premature breakage are important.
Mining and Cement Grinding
Can be supplied for suitable mining and cement grinding applications according to the required material grade, ball diameter and operating conditions.
How to Choose Low-Breakage Forged Steel Grinding Balls?
| Factor |
|
|---|---|
| Ball Diameter | Affects impact energy and grinding size |
| Material Grade | Determines hardness and toughness |
| Surface Hardness | Influences abrasive wear resistance |
| Core Hardness |
|
| Hardness Distribution | Supports predictable wear |
| Impact Conditions |
|
| Feed Size |
|
| Ore / Material Abrasiveness |
|
| Mill Type | Determines operating impact conditions |
Looking for Low-Breakage Grinding Balls?
→ Get a Grinding Ball Recommendation
Q1: What's the delivery time?
A : The standard lead time is approximately 14 working days, depending on order quantity and production schedule.
Q2: What's package?
A: 1,000 kg Iron Drum / Ton Bag
Q3: Do you provide technical support?
A: We have a professional technical support team to provide timely assistance. We can also prepare technical documents according to your requirements. You can contact us by phone, online chat, WhatsApp or Skype.
Q4: What's the payment method?
A: T/T, Western Union, MoneyGram, L/C
Q5: How do you ensure the products arrive safely?
The grinding balls are securely packed in iron drums or ton bags for international transportation. We also inspect the products and packaging before shipment to ensure they meet the agreed specifications.
Looking for Low-Breakage Grinding Balls?
→ Get a Grinding Ball Recommendation
About the Supplier
This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASR255938". Items marked "
" are certified.
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Company Profile
JINAN JUNDA INDUSTRIAL TECHNOLOGY was established in 2005. We are a professional manufacturer and exporter of Forged Steel Balls, Cast Steel Balls, Steel Rods, Chrome Steel Balls, Carbon Steel Balls, Stainless Steel Balls, Garnet Sand, Steel Shot, Steel Grit, Bearing Steel Grit, Glass Beads, and other surface treatment abrasives.
Regarding garnet sand, we integrate mining, production, and sales, with adequate reserves. In recent years, our garnet sand production capacity has increased from thousands of tons to tens of thousands of tons. We have built a good reputation in the garnet industry worldwide.
Regarding steel shot, steel grit, and bearing steel grit, our products meet American SAE standards and are widely used in shipbuilding, molding, steel production, automobile manufacturing, container manufacturing, machinery manufacturing, pipeline anti-corrosion, aviation, granite cutting, and other industries.
Regarding glass beads, we can produce different types of road-marking glass beads, sandblasting glass beads, and grinding glass beads according to customers' specific requirements and relevant standards, including European Standards EN 1423 and EN 1424; American Standard AASHTO M247 Types 1 and 2; British Standard BS 6088 Classes A and B; Japanese Standard JIS R3301; And Korean Standard KSL 2521 Nos. 1 and 2.
Our philosophy is to build sustainable growth on a foundation of high quality and excellent customer service. We manufacture our products in accordance with ISO quality standards and provide in-depth application knowledge and professional technical support. Highly efficient logistics are central to our company culture, and JINAN JUNDA INDUSTRIAL strictly controls materials from source to production to ensure quality and consistency. Our products are exported to the USA, Germany, Japan, and more than 90 countries worldwide.
We welcome your inquiries about our current products and opportunities for new applications and cooperation.
About Our Factory & Business Background
- Address
- OUYA DAGUAN Shizhong District, Jinan, Shandong, China
- Terms of Payment
- T/T, LC, Western Union, D/P
- International Commercial Terms(Incoterms)
- FOB, EXW, CIF, FAS, DDP
- Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays - Nearest Port
- Qing Dao
Our Production Capability & Technical Expertise
Our Industry Experience & Global Business Record
- Main Markets
- North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
FAQ
- What are low-breakage forged steel grinding balls?
- Low-breakage forged steel grinding balls are grinding media manufactured and heat-treated to reduce the risk of premature cracking and breakage during mill operation. Their performance depends on material grade, forging quality, heat treatment, hardness distribution and operating conditions.
- What makes a grinding ball low-breakage?
- Low-breakage performance depends on several factors, including suitable material composition, a dense forged structure, controlled heat treatment, appropriate hardness and sufficient toughness. Stable surface and core hardness can also help provide more predictable mechanical performance.
- Why is core hardness important for grinding balls?
- Core hardness is important because the inside of a grinding ball is repeatedly exposed to impact during mill operation. Excessive hardness without sufficient toughness may increase cracking risk, while insufficient hardness may accelerate wear. A suitable hardness distribution helps balance wear resistance and impact resistance.
- Is higher hardness always better for grinding balls?
- No. Higher hardness does not always mean better grinding ball performance. Grinding media should balance hardness, wear resistance and toughness according to the mill type, feed material, impact conditions and required grinding size.
- Can low-breakage grinding balls reduce grinding media consumption?
- They can help reduce media consumption caused by premature breakage. However, actual grinding media consumption also depends on ore or material abrasiveness, mill operating conditions, ball size, hardness, grinding efficiency and other factors.
- What sizes are available for low-breakage forged steel balls?
- JUNDA can supply different grinding ball diameters according to production capability and customer requirements. For this product specification, 20-35 mm sizes can be offered, subject to the confirmed production and technical standard.
- Are these grinding balls suitable for ball mills?
- Yes. They can be used in suitable ball mill applications where stable hardness, good toughness and low-breakage performance are important. The appropriate size and material grade should be selected according to the mill and feed conditions.
- Are low-breakage grinding balls suitable for fine grinding?
- Yes. Smaller grinding balls are commonly considered for finer grinding stages because they provide more contact points and grinding surface area. The final ball size should be selected according to feed size, target product fineness and mill design.
- What is the difference between low-breakage grinding balls and high-hardness grinding balls?
- High-hardness grinding balls primarily emphasize resistance to abrasive wear, while low-breakage grinding balls focus on maintaining a suitable balance between hardness, toughness and structural integrity. In demanding grinding conditions, selecting the right balance can be more important than maximizing hardness alone.
- Can JUNDA provide hardness test data?
- Yes. Surface and core/volume hardness can be inspected according to the agreed product specification. Inspection data can be provided for applicable production batches.
- Can the grinding ball material and hardness be customized?
- Yes. JUNDA can provide different material grades, diameters and hardness specifications according to customer requirements, production capability and the intended grinding application.
- How does JUNDA control grinding ball quality?
- JUNDA controls raw material selection, forging, heat treatment, hardness distribution, dimensional tolerance and final inspection. The company has an ISO-based quality management system and provides technical documentation according to customer requirements.
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Product Groups
- Forged Steel Ball
- Abrasive Blasting Media
- Sandblasting equipment
- Stainless steel ball
- carbon steel ball
- Chrome Steel Ball
- Cast steel ball
- Steel Rod
- Silicon series
- Sandblasting parts(sandblasting nozzle &sandblasting gun)
- Sandblasting Protection Equipment(sandblasting helmet&hood)
- Road marking machine
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