Bi sắt
| Kích thước bi sắt |
| mm sang inches |
| mm | inches | mm | inches |
| 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00 7.50 8.00 8.50 9.00 9.50 10.00 10.50 11.00 | 0.0196850 0.0393700 0.0590550 0.0787400 0.0984250 0.1181100 0.1377950 0.1574800 0.1771650 0.1968500 0.2165350 0.2362200 0.2559050 0.2755900 0.2952750 0.3149600 0.3346450 0.3543300 0.3740150 0.3937000 0.4133850 0.4330700 | 18.50 19.00 19.50 20.00 20.50 21.00 21.50 22.00 22.50 23.00 23.50 24.00 24.50 25.00 25.50 26.00 26.50 27.00 27.50 28.00 28.50 29.00 | 0.7283450 0.7480300 0.7677150 0.7874000 0.8070850 0.8267700 0.8464550 0.8661400 0.8858250 0.9055100 0.9251950 0.9448800 0.9645650 0.9842500 1.0039350 1.0236200 1.0433050 1.0629900 1.0826750 1.1023600 1.1220450 1.1417300 |
Đọc chỉ số Grade
| Grade Tolerances | Semi-Precision Balls |
| Grade 100 200 500 1000 2000 | Sai số (inches) ± .0001 ± .0002 ± .0005 ± .001 ± .002 |
