Non-Ferrous Alloy Precision Balls
Ball Bearing
Corrosion-Resistant, Conductive & Versatile
Atlas Ball and Bearing offers a full range of non-ferrous alloy precision balls, ideal for applications requiring electrical conductivity, corrosion resistance, and a high-quality surface finish. We supply high-performance balls in brass, copper, aluminium, and bronze alloys—suitable for marine, instrumentation, electrical, and decorative applications.
Applications Include:
- Electrical systems and switchgear
- Marine & offshore engineering
- Decorative design and architecture
- Instrumentation and metrology
- Automotive and aerospace assemblies
150
Precision Ball Diameter
Brass Ball Bearings
- Non-Magnetic, Corrosion-Resistant, and Visually Appealing
Brass
Machinable, Corrosion-Resistant, and Visually Appealing
Used in plumbing, decorative fittings, and marine hardware.
Naval Brass
Marine-Grade Brass Alloy
Copper–zinc–tin alloy offering high strength and excellent resistance to seawater corrosion.
Copper Ball Bearings
- Highly Conductive, Malleable, and Spark-Resistant
Copper
Highly Conductive, Soft, and Formable
Perfect for low-load, electrical, and decorative applications.
Beryllium Copper
Spark-Resistant, High Strength & Conductive
Used in hazardous environments, tools, and connectors where spark resistance is vital.
Aluminium Ball Bearings
- Lightweight, Rustproof, and Non-Magnetic
Aluminium
Lightweight, Corrosion-Resistant, and Non-Magnetic
Suited for aerospace, instrumentation, and non-magnetic assemblies.
Bronze Ball Bearings
- High Strength, Wear-Resistant, and Anti-Friction
Phosphor Bronze
Tough and Corrosion-resistant
Copper-tin-phosphorus alloy used in electrical and mechanical parts.
Phosphor Bronze (PB104)
Wear-Resistant, Low Friction & Anti-Fatigue
Ideal for springs, bearings, and valve components in mechanical systems.
Manganese Bronze
High Load, Tough & Wear-Resistant
Used in heavy-duty marine and industrial settings.
Aluminium Bronze
Tough, Corrosion-Resistant & Marine Grade
Combines excellent strength with superior resistance to seawater and chemicals.
Manufacturing & Supply
We are capable of manufacturing and supplying loose non-ferrous alloy balls in nearly every variation of grade, maintaining an extensive stock with sizes ranging from 0.2mm to 150mm in diameter.
Please feel free to rate our products and service or send us your comments by using our form opposite →
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.
Common Applications by Material
- Brass – Plumbing, marine hardware, decorative fittings
- Copper – Electrical contacts, hazardous environments, precision electronics
- Aluminium – Aerospace, lightweight systems, marine engineering
- Bronze – Bushings, bearings, industrial valves, marine & heavy-duty mechanical systems
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!