Table 5 Critical contact speed and resistance torque of motor under different conditions.
Motor states | Stopping in the vertical state | Stopping in the horizontal state | ||
|---|---|---|---|---|
Analysis items | Critical contact speed (r/min) | Resistance torque (g cm) | Critical contact speed (r/min) | Resistance torque (g cm) |
Concentric hemisphere and bowl | 780 | 0.35 | 1275 | 0.77 |
Ball center distance 1.5 μm | 1170 | 0.57 | 1300 | 0.97 |
