United States Ball Corp. utilizes all manner of materials. The table below is a list of the most common materials used.
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Ball Materials
- Aluminum Balls
- Brass / Bronze / Copper Balls
- Carbide Balls
- Age Hardenable Stainless Balls
- Ceramic Balls
- Hollow Balls
- Cobalt Based Alloy Balls
- Nickel & Nickel Alloy Balls
- Specialty Stainless Balls
- Tantalum Balls
- Stainless Steel Balls
- 52100 Steel Balls
BALL GRADE TOLERANCE STANDARDS
United States Ball Corp. subscribes to ASTM F2215 and ANSI/ABMA/ISO 3290 ball grade standards, which are listed below. The ball grades include many tolerances. The most common tolerances are listed below.
Allowable deviation from spherical ball form:
The most significant radial distance in any radial plane between a sphere circumscribed around the precision ball surface and any point on the industrial ball surface.
Ball surface roughness:
The irregularities which form the surface relief but are not deviations of form or waviness.
Basic ball diameters & tolerance:
The maximum allowable deviation in any precision metal ball means diameter from the basic diameter ordered. Metric and Standard.
The most common tolerances are listed below:
|
Ball Grade
|
Deviation from Spherical Ball Form
|
Surface Roughness Arithmetical Average (in micro-inches)
|
Basic Ball Diameter Tolerance (+/-)
|
| 3 | .000003" | .5 | .000030" |
| 5 | .000005" | .8 | .000050" |
| 10 | .000010" | 1.0 | .0001" |
| 16 | .000016" | 1.0 | .0001" |
| 24 | .000024" | 2.0 | .0001" |
| 25 | .000025" | 2.0 | .0001" |
| 48 | .000048" | 3.0 | .0002" |
| 50 | .000050" | 3.0 | .0002" |
| 100 | .0001" | 5.0 | .0005" |
| 200 | .0002" | 8.0 | .001" |
| 500 | .0005" | .002" | |
| 1000 | .001" | .005" |
