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About Stainless Steel
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About Carbon Steel, Alloy Steel, Spring Steel, and Cast Iron
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Hardened Bearing-Quality 440C Stainless Steel

- Yield Strength: Not Rated
- Hardness: Rockwell C60 (Very Hard)
- Heat Treatment: Hardened
- Specifications Met: SAE AMS5630
These balls are hardened for increased wear and abrasion resistance. 440C is one of the hardest types of stainless steel after heat treating. It's often used for bearings and valves. This material maintains its corrosion resistance in temperatures up to 800° F.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Dia. | Dia. Tolerance | Magnetic Properties | Pkg. Qty. | Pkg. | |
Mirror-Like | |||||
---|---|---|---|---|---|
1 1/4" | -0.0005" to 0.0005" | Magnetic | 1 | 0000000 | 000000 |
Tight-Tolerance Hardened 440C Stainless Steel
With a diameter that’s held to a close tolerance, this material is hardened for increased wear and abrasion resistance. 440C is one of the hardest types of stainless steel after heat treating. This material maintains its corrosion resistance in temperatures up to 800° F.
Balls have a reflective, mirror-like appearance.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

- Yield Strength: Not Rated
- Hardness: Rockwell C60 (Very Hard)
- Heat Treatment: Hardened
- Specifications Met: SAE AMS5630
Dia. | Dia. Tolerance | Magnetic Properties | Pkg. Qty. | Pkg. | |
Mirror-Like | |||||
---|---|---|---|---|---|
1 1/4" | -0.0001" to 0.0001" | Magnetic | 1 | 0000000 | 000000 |
Corrosion-Resistant 316 Stainless Steel
The addition of molybdenum gives 316 stainless steel excellent corrosion resistance. Use it in a variety of marine and chemical-processing applications. It maintains its corrosion resistance up to the maximum temperature.
Balls have a reflective, mirror-like finish.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

- Yield Strength: Not Rated
- Hardness:
Inch Sizes: Rockwell B90 (Medium)
Metric Sizes: Rockwell C25 (Hard) - Heat Treatment: Not Rated
- Heat Treatable: No
- Specifications Met: Not Rated
Dia. | Dia. Tolerance | Mechanical Finish | Appearance | Max. Temp., °F | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||
---|---|---|---|---|---|---|---|
Inch | |||||||
1 1/4" | -0.001" to 0.001" | Tumbled | Mirror-Like | 1500° | 1 | 00000000 | 000000 |
Tight-Tolerance Multipurpose 304 Stainless Steel
This material has tighter tolerances than standard 304 stainless steel. From cookware to chemical-processing equipment, 304 stainless steel is a good all-around choice for a wide range of applications. It maintains its corrosion resistance in temperatures up to 1500° F.
Balls have a reflective, mirror-like finish.
Steel that meets ASTM or SAE specifications complies with standards for materials.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

- Yield Strength: Not Rated
- Hardness: Rockwell C25 (Hard)
- Heat Treatable: No
Dia. | Dia. Tolerance | Fabrication | Specifications Met | Pkg. Qty. | Pkg. | |
Mirror-Like | ||||||
---|---|---|---|---|---|---|
1 1/4" | -0.001" to 0.001" | Cold Worked | ASTM A240, ISO 3290, SAE J405 | 1 | 0000000 | 000000 |
Hard Wear-Resistant 52100 Alloy Steel Balls

- Yield Strength: 295,000 psi
- Hardness: Rockwell C60 (Very Hard)
- Specifications Met: See table
Also known as chrome steel, 52100 is an extremely hard and wear-resistant material. These balls are often used in bearings.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Dia. | Dia. Tolerance | Heat Treatment | Pkg. Qty. | Pkg. | |
Mirror-Like | |||||
---|---|---|---|---|---|
1 1/4" | -0.0001" to 0.0001" | Hardened | 1 | 0000000 | 00000 |
Wear-Resistant Easy-to-Machine Delrin® Acetal Resin Balls

- Color: White
- Temperature Range: -20° to 180° F
- Tensile Strength: 10,000-11,000 psi (Good)
- Impact Strength: 1-1.5 ft.-lbs./in. (Poor)
- Hardness: Rockwell R120-R122 (Hard)
- For Use Outdoors: No
- Specifications Met: FDA Compliant 21 CFR 177.2480
Able to hold tight tolerances, these balls resist expanding when exposed to heat and moisture. They have a naturally slippery, wear-resistant surface. Use them for bearings and low-load rolling applications. Delrin® acetal resin is also known as acetal homopolymer.
For technical drawings and 3-D models, click on a part number.
Dia. | Dia. Tolerance | Pkg. Qty. | Pkg. | |
Inch | ||||
---|---|---|---|---|
1 1/4" | -0.002" to 0.002" | 1 | 0000000 | 00000 |
Chemical-Resistant Slippery PTFE Balls

- Color: White
- Max. Temperature: 500° F
- Tensile Strength: See Table (Poor)
- Impact Strength: 3.5 ft.-lbs./in. (Good)
- Hardness: Durometer 50D-65D (Medium Soft)
- For Use Outdoors: Yes
Offering a nonstick, slippery surface, these PTFE balls are often used as bearings and in ball valves. They offer superior chemical resistance and perform well in extreme temperatures. These balls are also excellent electrical insulators.
For technical drawings and 3-D models, click on a part number.
Dia. | Dia. Tolerance | Tensile Strength | Pkg.Qty. | Pkg. | |
1 1/4" | -0.005" to 0.005" | 2,000-3,480 psi | 1 | 0000000 | 000000 |
Abrasion-Resistant Polyurethane Rubber Balls
Use these polyurethane balls as seals in pumps and check valves or let them bounce inside of vibrating sifters for an effective screen cleaner. They are made of polyurethane, which combines the shock absorbing qualities of rubber with the strength of plastic.
Balls with a steel core are heavier than standard balls, so they’re often used to offset buoyancy or to reach a specific weight.
For technical drawings and 3-D models, click on a part number.

- Color: Black
- Temperature Range: -20° to 200° F
- Tensile Strength: 5,600 psi
- For Use Outdoors: Yes
Dia. | Dia. Tolerance | Durometer | Each | |
1 1/4" | -0.020" to +0.020" | 95A (Extra Hard) | 0000000 | 00000 |

- Color: Black
- Temperature Range: -20° to 200° F
- Tensile Strength: 5,600 psi
- For Use Outdoors: Yes
Core | ||||||
---|---|---|---|---|---|---|
Dia. | Dia. Tolerance | Material | Dia. | Durometer | Each | |
1 1/4" | -0.020" to +0.020" | Steel | 3/4" | 95A (Extra Hard) | 0000000 | 000000 |
Flange-Mount Ball Transfers


Steel balls are durable.
Ball transfers with an angled working orientation can be used to form stock stands.
For technical drawings and 3-D models, click on a part number.
Flange | Mounting Hole | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ball Dia. | Cap., lbs. | Ht. | Dia. | Working Orientation | Lg. | Wd. | Dia. | No.of Mounting Holes | Dia. | Ctr.-to-Ctr. | Temperature Range, °F | Each | ||
Steel Ball | ||||||||||||||
Black-Oxide Steel Housing | ||||||||||||||
D | 1" | 135 | 1 9/32" | 1 1/4" | Ball Up, Ball Down, Angle | 2 7/16" | 1 11/16" | __ | 2 | 5/32" | 2" | Not Rated to 400° | 0000000 | 000000 |
E | 1" | 135 | 1 1/2" | 1 1/4" | Ball Up, Ball Down, Angle | __ | __ | 2 7/16" | 4 | 5/32" | 2 3/16" | Not Rated to 400° | 0000000 | 00000 |
Wood Balls

For technical drawings and 3-D models, click on a part number.
Dia. | Dia. Tolerance | Pkg. Qty. | Pkg. | |
Birch | ||||
---|---|---|---|---|
1 1/4" | -0.031" to 0.031" | 25 | 0000000 | 000000 |