Sapphire and Ruby Balls
Series 9B Polished Sapphire and Ruby Balls - Available from Stock Quality Standards and Tolerances
Our quality standards assure you of balls which are highly polished and of high precision. Tolerances are +/- .0001" on diameter. Tolerances are .000025" (AFBMA Grade 25) or better through 1.4"; grade 125 or better on larger sizes. Grade 10 available for sizes through 1/8". Add 10%.
| Diameter Fractional Sizes | Millimeter Sizes |
| 1/200, 1/64, 1/32, 3/64, 1/64 | .13, .15 |
| 3/32 | .20, .25, .30, .40, .50, .60, .70 |
| 1/8 | .80, .90 |
| 5/32 | 1.00, 1.20, 1.25, 1.50, 1.75 |
| 3/16 | 2.00 |
| 7/32 | 2.50 |
| 1/4 | 3.00 |
| 9/32 | 3.50 |
| 5/16 | 4.00 |
| 3/8 | 4.50 |
| 1/2 | 5.00 |
| 5/8 (sapphire only) | 6.00 |
| 3/4 (sapphire only) | 6.50 |
| 7.00 | |
| 8.00 | |
| 8.50 | |
| 9.00 | |
| 9.50 | |
| 10.00 | |
| 11.00 | |
| 12.00 |
Glass (BK-7; PYREX; Soda Lime), Agate, Tungsten Carbide, Quartz precision balls available as well in sizes listed above.
We stock drilled ruby balls AFBMA Grade 10.
We stock hemispheres with and without polished flats.
