75mm 70Cr2 Steel Grinding Balls Exporter | High Wear Resistance
- Steel Grinding Balls(75 mm), manufactured from 70Cr2 alloy steel, are designed for demanding mining, mineral processing, cement, and ball mill applications.
- With a nominal diameter of 75 mm, +3/-1 mm tolerance, and 1.738 kg weight per ball, they provide consistent grinding performance and durability.
- The controlled 70Cr2 chemical composition offers high wear resistance, good impact resistance, and reliable service life in heavy-duty grinding operations.
- Our grinding balls undergo quality control including chemical analysis, dimensional inspection, weight control, roundness, hardness, and visual inspection.
- As a manufacturer and exporter, we supply 75 mm grinding balls for bulk international orders with customized packaging, inspection, and technical documentation.
75 mm 70Cr2 Steel Grinding Balls تولید و صادرات گلوله فولادی سایز 75 میلیمتر
Steel Grinding Balls(75 mm) manufactured from 70Cr2 alloy steel, These grinding balls are designed for demanding applications in mining, mineral processing, cement plants, and industrial ball mills.
Our 75 mm grinding balls are produced with controlled dimensional tolerance, roundness, weight, and chemical composition to provide reliable grinding performance, high wear resistance, and long service life.
Technical Specification of 75 mm Steel Grinding Balls
| Parameter | Specification |
|---|---|
| Product | Steel Grinding Ball |
| Steel Grade | 70Cr2 |
| Nominal Diameter | 75 mm |
| Dimensional Tolerance | +3 / -1 mm |
| Diameter Range | 74–78 mm |
| Roundness / Equal or Smaller Size | ≤ 4% |
| Weight per Ball | 1.738 kg |
| Surface Area per Ball | 17,678 mm² |
| Approx. Balls per Metric Ton | 575 pcs |
| Application | Ball Mills, Mining, Cement and Mineral Processing |
Chemical Composition of 70Cr2 Steel
Our usual chemical composition for the 75 mm steel grinding balls is based on 70Cr2 alloy steel. The typical chemical analysis is as follows:
| Element | Chemical Composition (%) |
|---|---|
| Carbon (C) | 0.65 – 0.75 |
| Silicon (Si) | 0.20 – 0.30 |
| Manganese (Mn) | 0.75 – 0.90 |
| Phosphorus (P) | ≤ 0.03 |
| Sulfur (S) | ≤ 0.03 |
| Chromium (Cr) | 0.55 – 0.70 |
75 mm 70Cr2 Grinding Ball Analysis
Diameter and Dimensional Tolerance
The nominal diameter of each grinding ball is 75 mm. The specified dimensional tolerance is +3 / -1 mm, giving a nominal dimensional range of approximately 74 to 78 mm.
Ball Weight
The nominal weight of each 75 mm grinding ball is 1.738 kg per ball. Based on this nominal weight, one metric ton contains approximately 575 balls.
Surface Area
The specified surface area of each 75 mm grinding ball is 17,678 mm². This surface area provides the grinding media with the contact area required for efficient grinding inside industrial ball mills.
Roundness
The specified roundness requirement is 4% or less for equal or smaller-sized balls, supporting consistent movement and grinding performance inside the mill.
Advantages of 75 mm 70Cr2 Steel Grinding Balls
- High wear resistance
- Good impact resistance
- Controlled diameter and dimensional tolerance
- Consistent ball weight
- Controlled chemical composition
- Suitable for heavy-duty ball mills
- Suitable for mining and mineral-processing applications
- Suitable for cement and clinker grinding
- Available for bulk export orders
- Inspection and quality documentation available according to buyer requirements
Applications of 75 mm Steel Grinding Balls
75 mm 70Cr2 steel grinding balls are suitable for a wide range of industrial grinding applications, particularly where high wear resistance and reliable grinding performance are required.
- Mining industries
- Iron ore grinding
- Copper ore grinding
- Mineral processing plants
- Cement plants
- Clinker grinding
- Ball mills
- Industrial grinding systems
Manufacturing and Quality Control
As a manufacturer and exporter of 75 mm steel grinding balls, we can supply grinding media according to agreed technical specifications and customer requirements.
Quality control may include dimensional inspection, chemical analysis, hardness testing, visual inspection, weight control, and batch or lot traceability. Inspection certificates can be provided according to the agreed purchase specification.
Quality Inspection
- Chemical composition analysis
- Diameter and dimensional inspection
- Weight inspection
- Roundness inspection
- Hardness testing
- Visual surface inspection
- Batch and production traceability
Export Specification
| Specification | Value |
|---|---|
| Product | 75 mm Steel Grinding Balls |
| Grade | 70Cr2 |
| Nominal Diameter | 75 mm |
| Tolerance | +3 / -1 mm |
| Roundness / Smaller Size | ≤ 4% |
| Weight per Ball | 1.738 kg |
| Surface Area | 17,678 mm² |
| Carbon (C) | 0.65–0.75% |
| Silicon (Si) | 0.20–0.30% |
| Manganese (Mn) | 0.75–0.90% |
| Phosphorus (P) | ≤ 0.03% |
| Sulfur (S) | ≤ 0.03% |
| Chromium (Cr) | 0.55–0.70% |
Manufacturer and Exporter of 75 mm Steel Grinding Balls
We are a manufacturer and exporter of 75 mm steel grinding balls made from 70Cr2 alloy steel. Our grinding balls are available for bulk international orders and can be supplied according to the customer's technical, packaging, inspection, and shipping requirements.
For quotations, technical documentation, packing details, and export inquiries, please contact our sales department.
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