Cronidur 30 Stainless Steel Balls
Ball Bearing
High Nitrogen Stainless Steel
Our Cronidur 30 stainless steel ball range is engineered for applications requiring exceptional hardness, high fatigue strength, and outstanding corrosion resistance. Developed as a high nitrogen martensitic stainless steel, Cronidur 30 combines superior wear resistance with excellent durability, making it an ideal material for demanding precision engineering environments. Frequently used in aerospace, high-performance bearings, and specialist industrial applications, Cronidur 30 delivers reliable performance under extreme operating conditions. At Atlas Ball & Bearing, we supply Cronidur 30 balls to precise specifications with full manufacturing capability and technical support.
150
Precision Ball Diameter
Why Choose Cronidur 30 Stainless Steel Balls?
Cronidur 30 stainless steel balls are specifically designed for demanding applications where conventional bearing materials may not provide sufficient performance. Its high nitrogen content significantly improves hardness, corrosion resistance, and fatigue life while reducing the risk of cracking under stress.
Key Benefits
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High hardness and excellent wear resistance
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Exceptional rolling contact fatigue resistance
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Superior corrosion resistance compared with conventional bearing steels
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High mechanical strength
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Excellent dimensional stability
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Improved resistance to cracking and stress-related failure
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Suitable for high-speed and high-load applications
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Long service life in demanding environments
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Reliable dimensional accuracy for precision engineering
Manufacturing & Supply
We are capable of manufacturing and supplying loose Cronidur 30 stainless steel balls in nearly every variation of grade, maintaining an extensive stock with sizes ranging from 0.2mm to 150mm in diameter.
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Additionally, we offer a bespoke ball manufacturing service, which follows the same process controls and traceability but uses a customer’s own material. For further details, please email us or call +44 (0) 1922 710515.
Applications
Cronidur 30 stainless steel balls are commonly used where exceptional wear resistance, strength, and operational reliability are required.
Typical applications include:
- Aerospace bearing systems
- High-speed precision bearings
- Turbine and aviation components
- Motorsport and performance engineering applications
- Medical equipment
- High-performance industrial machinery
- Vacuum technology systems
- Precision engineering assemblies
- Specialist mechanical components
- Advanced manufacturing applications
Cronidur 30 balls are available in a wide range of sizes and tolerances to meet both standard and precision engineering requirements, particularly where long-term performance under demanding conditions is essential.
Why Atlas Ball & Bearing?
- UK-based manufacturer and supplier of precision-engineered stainless steel balls
- Extensive stock across specialist stainless steel grades and advanced alloys
- Consistent quality control and dimensional accuracy
- Technical support for specialist engineering applications
- Fast UK and international delivery
- Bespoke manufacturing to exact customer requirements
Related Materials
Silicon Nitride Balls
440C Stainless Steel Balls
Biodur 108 Balls
Useful terms and definitions
Batch or Lot:
A defined quantity of balls manufactured under conditions presumed to be uniform and which is considered an entity.
Nominal Ball Diameter:
The diameter value that is used for the general identification of a ball size.
Single Ball Diameter:
The distance between two parallel planes tangential to the actual ball surface.
Diameter Tolerance per Batch:
The allowed difference between the smallest measured ball diameter and the largest ball diameter within the same batch or lot quantity.
Sphericity:
A measure of roundness expressed as the difference between the measured roundness of a ball and a theoretically perfectly round ball.
Surface Finish or Roughness:
A measure of the texture of a surface. It is quantified by the vertical deviations of the actual surface from its ideal form. If these deviations are large, the surface is rough; if they are small, the surface is smooth.
Ball Grades
| Grade | Diameter Tolerance per Ball | Sphericity | Diameter Tolerance per Unit Container | Basic Diameter Tolerance | Maximum Surface Roughness Micro | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Inch | µ | Inch | µ | Inch | µ | Inch | µ | Inch | µ | |
| 3 | .000003 | 0.076 | .000003 | 0.076 | .000005 | 0.127 | ±.00003 | ± 0.076 | 0.5 | 0.013 |
| More details about Grade 3... | ||||||||||
| 5 | .000005 | 0.127 | .000005 | 0.127 | .00001 | 0.25 | ±.00005 | ± 0.127 | 0.8 | 0.02 |
| More details about Grade 5... | ||||||||||
| 10 | .000010 | 0.25 | .000010 | 0.25 | .00002 | 0.51 | ±.0001 | ± 2.5 | 1.0 | 0.025 |
| More details about Grade 10... | ||||||||||
| 15 | .000015 | 0.38 | .000015 | 0.38 | .00003 | 0.76 | ±.0001 | ± 2.5 | 1.2 | 0.03 |
| More details about Grade 15... | ||||||||||
| 25 | .000025 | 0.63 | .000025 | 0.63 | .00005 | 1.27 | ±.0001 | ± 2.5 | 1.5 | 0.038 |
| More details about Grade 25... | ||||||||||
| 50 | .00005 | 1.27 | .00005 | 1.27 | .0001 | 2.5 | ±.0002 | ± 5 | 3.0 | 0.075 |
| More details about Grade 50... | ||||||||||
| 100 | .0001 | 2.5 | .0001 | 2.5 | .0002 | 5 | ±.0005 | ± 5 | 5.0 | 0.125 |
| More details about Grade 100... | ||||||||||
| 200 | .0002 | 5 | .0002 | 5 | .0004 | 10 | ±.0010 | ± 10 | 8.0 | 0.2 |
| More details about Grade 200... | ||||||||||
| 300 | .0003 | 7.5 | .0003 | 7.5 | .0006 | 15 | ±.0015 | ± 37.5 | N/A | N/A |
| More details about Grade 300... | ||||||||||
| 500 | .0005 | 12.5 | .0005 | 12.5 | .001 | 25 | ±.002 | ± 50 | N/A | N/A |
| More details about Grade 500... | ||||||||||
| 1000 | .001 | 25 | .001 | 25 | .002 | 50 | ±.005 | ± 125 | Not Applicable | Not Applicable |
| More details about Grade 1000... | ||||||||||
| 2000 | .002 | 50 | .002 | 50 | .004 | 100 | ±.005 | ± 125 | N/A | N/A |
| More details about Grade 2000... | ||||||||||
Sample Our Work!
Take the first step towards precision and quality with our expert services. At Atlas Ball & Bearing, we’re committed to delivering top-notch precision balls and rollers for a wide range of industries, including gas, oil, medical, and transportation. Our dedicated team is ready to assist you with custom solutions tailored to your specific needs. Experience the Atlas Ball & Bearing difference now!