| No | Motor Type | RPM | Nominal Voltage | Stall Current | Stall Torque | Gear Ratio |
|---|---|---|---|---|---|---|
| 1 | JA12-N20 | 250 | 3 V | 100 mA | 0.56 kg·cm | 1:30 Gearmotor |
| 2 | JA12-N20 | 150 | 3 V | 100 mA | 0.8 kg·cm | 1:50 Gearmotor |
| 3 | JA12-N20 | 75 | 3 V | 100 mA | 1.2 kg·cm | 1:100 Gearmotor |
| 4 | JA12-N20 | 50 | 3 V | 100 mA | 1.6 kg·cm | 1:150 Gearmotor |
| 5 | JA12-N20 | 37 | 3 V | 100 mA | 2 kg·cm | 1:200 Gearmotor |
| 6 | JA12-N20 | 25 | 3 V | 100 mA | 4 kg·cm | 1:298 Gearmotor |
| 7 | JA12-N20 | 19 | 3 V | 100 mA | 4 kg·cm | 1:380 Gearmotor |
| 8 | JA12-N20 | 500 | 6 V | 100 mA | 1.2 kg·cm | 1:30 Gearmotor |
| 9 | JA12-N20 | 300 | 6 V | 100 mA | 1.6 kg·cm | 1:50 Gearmotor |
| 10 | JA12-N20 | 150 | 6 V | 200 mA | 2.4 kg·cm | 1:100 Gearmotor |
| 11 | JA12-N20 | 100 | 6 V | 200 mA | 3.2 kg·cm | 1:150 Gearmotor |
| 12 | JA12-N20 | 74 | 6 V | 200 mA | 3.2 kg·cm | 1:200 Gearmotor |
| 13 | JA12-N20 | 50 | 6 V | 200 mA | 10 kg·cm | 1:298 Gearmotor |
| 14 | JA12-N20 | 39 | 6 V | 300 mA | 10 kg·cm | 1:380 Gearmotor |
| 15 | JA12-N20 | 1000 | 12 V | 300 mA | 2.4 kg·cm | 1:30 Gearmotor |
| 16 | JA12-N20 | 600 | 12 V | 300 mA | 3.2 kg·cm | 1:50 Gearmotor |
| 17 | JA12-N20 | 300 | 12 V | 300 mA | 4 kg·cm | 1:100 Gearmotor |
| 18 | JA12-N20 | 200 | 12 V | 300 mA | 7 kg·cm | 1:150 Gearmotor |
| 19 | JA12-N20 | 148 | 12 V | 300 mA | 9 kg·cm | 1:200 Gearmotor |
| 20 | JA12-N20 | 100 | 12 V | 300 mA | 16 kg·cm | 1:298 Gearmotor |
| 21 | JA12-N20 | 78 | 12 V | 300 mA | 16 kg·cm | 1:380 Gearmotor |