Filter by
System of Measurement
Diameter
Material
Shape
Hardness Rating
Tolerance Rating
Appearance
Heat Treatment
Maximum Temperature
DFARS Specialty Metals
Minimum Temperature
REACH
RoHS
U.S.–Mexico–Canada Agreement (USMCA) Qualifying
Performance
Precision Ball Grade
Yield Strength
Mechanical Finish
Finish
Fabrication
Magnetic Properties
Specifications Met
Hardened Ultra-Wear-Resistant 440C Stainless Steel Balls
 |
The best choice for high-performance bearings and valves, these 440C stainless steel balls are among the strongest, hardest, and most wear-resistant we offer. They’re passivated to wash away surface particles that cause rust, and they’re polished to a mirror-like finish that contaminants can’t stick to. The result is balls that stay smooth and stand the test of time—even at temperatures up to 800° F. They’re made to strict ISO 3290 standards for roundness and surface quality.
These balls are magnetic, so you can use them in separators, sensors, and automated handling systems that use magnetic pickup or positioning.
Grade 25—Precision-ground to tighter tolerances than Grade 100 balls. Use them in high-accuracy assemblies.
%20--%3e%3cg%3e%3cg%20id='Layer_1'%3e%3cpath%20class='cls-1'%20d='M68,27.2c-14.6,0-26.4,11.7-26.4,26.3,0,7,2.8,13.7,7.7,18.7v44.8l18.8-16.1,18.7,16.1v-44.9c10.3-10.3,10.3-27,0-37.3-5-4.9-11.7-7.7-18.7-7.7h0ZM81.3,105l-13.2-11.4-13.2,11.4v-28.7c8.2,4.8,18.3,4.8,26.5,0v28.7ZM76.2,70.8c-5.2,2.5-11.2,2.5-16.4,0-9.5-4.5-13.5-15.9-9-25.4,4.5-9.5,15.9-13.5,25.4-9,9.5,4.5,13.5,15.9,9,25.4-1.9,4-5.1,7.1-9,9Z'/%3e%3cpath%20class='cls-2'%20d='M5.8,95.5c-1.2,0-2.1-1-2.1-2.1,0,0,0,0,0,0V29.4h20.9c2.1,0,3.8-1.7,3.8-3.8V3.7c.2,0,.4,0,.5,0h37.5c1.2,0,2.1,1,2.1,2.1v18.6c1.2,0,2.5.1,3.7.3V5.8C72.2,2.6,69.6,0,66.4,0H28.9c-1.5,0-3,.6-4.1,1.7h-.1c0,.1-23,23.2-23,23.2-1.1,1.1-1.7,2.6-1.7,4.1v64.3c0,3.2,2.6,5.8,5.8,5.8h41.7v-3.7H5.8ZM24.7,7.1v18.7H6L24.7,7.1Z'/%3e%3c/g%3e%3c/g%3e%3c/svg%3e)
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Stainless Steel Balls | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dia., mm | Dia. Tolerance, mm | Hardness | Specs. Met | Magnetic Properties | Appearance | Pkg. Qty. | Pkg. | |||
Grade 25 | ||||||||||
| 16 | -0.0025 to 0.0025 | Rockwell C58 (Extra Hard) | ISO 3290 | Magnetic | Mirror Like | 3 | 1598K37 | 000000 | ||
Steel Balls
 |
Multipurpose Low-Carbon Steel—Low-carbon steel balls are our easiest steel balls to machine. They are often used for parts that don’t require high strength, such as knobs. These balls can be surface hardened with heat treating for added wear resistance.
Wear-Resistant 52100 Alloy Steel—High carbon and chromium content makes this 52100 alloy steel extremely hard and resistant to wear. It’s also known as chrome steel. Often used as bearings, these balls are hardened for increased abrasion and impact resistance.
Dia., mm | Dia. Tolerance, mm | Heat Treatment | Yield Strength, psi | Mechanical Finish | Hardness | Appearance | Pkg. Qty. | Pkg. | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
Multipurpose Low-Carbon Steel | |||||||||||
| 16 | -0.13 to 0.13 | Case Hardened | 44,000 | Tumbled | Rockwell C60 (Extra Hard) | Mirror Like | 50 | 96455K144 | 000000 | ||
Wear-Resistant 52100 Alloy Steel | |||||||||||
| 16 | -0.0025 to 0.0025 | Hardened | 295,000 | — | Rockwell C60 (Extra Hard) | Mirror Like | 5 | 9292K53 | 0000 | ||
Nonporous Ceramic Alumina Balls
 |
Seal out air and gas in high-temperature and high-wear applications. This ultrahard ceramic can also be used in applications that require superior strength.
Temp. | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dia., mm | Dia. Tolerance | Sphericity Percentage | Color | Min. | Max., ° F | Fabrication | Dielectric Strength, V/mil | Porosity | Compressive Strength, psi | Hardness | Each | |||
| 16 | -0.0001" to 0.0001" | 99.99% | White | Not Rated | 2,000 | Fired | 220 | Not Rated | 300,000 | Rockwell 45N 83 | 9599K43 | 000000 | ||
High-Strength Fracture- and Wear-Resistant Zirconia Ceramic Balls
 |
Often used instead of metal in bearings and rollers, these balls are ideal for applications where strength under heavy loads and wear resistance is needed. It's the addition of yttria that gives this zirconia more strength and lowers the chances of cracking from impact than standard zirconia, alumina, and silicon nitride ceramic. If cracks do occur, they will not spread, extending the life and reliability of the material. It also means this zirconia blend resists wearing down from rubbing against another part or abrasion from chemical slurries.
These balls do not withstand rapid temperature changes or high temperatures as well as other high-performance ceramics such as ceramic alumina and silicon nitride ceramic.
Temp. | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dia., mm | Dia. Tolerance, mm | Color | Min. | Max., ° F | Fabrication | Performance | Dielectric Strength, V/mil | Porosity | Compressive Strength, psi | Hardness | Pkg. Qty. | Pkg. | |||
| 16 | -0.0005 to 0.0005 | White | Not Rated | 2,700 | Sintered | Fracture Resistant, High Strength, Wear Resistant | 220 | Not Rated | 350,000 | Rockwell 45N 81 | 1 | 5917N52 | 000000 | ||
