The powerful HS-645MG is one of Hitec’s most popular servos. It’s the perfect choice for those larger sport planes or monster trucks and buggies requiring a durable high torque servo. Featuring our unique M/P and metal gear train technology, the HS-645MG offers one of the strongest gear trains available in any servo
HS-645MG Servo Specifications
| Performance Specifications |
| Operating Voltage Range (Volts DC) | 4.8V ~ 6.0V |
| Speed (Second @ 60°) | 0.24 ~ 0.20 |
| Maximum Torque Range oz. / in. | 107 ~ 133 |
| Maximum Torque Range kg. / cm. | 7.7 ~ 9.6 |
| Current Draw at Idle | 9.1 mA |
| No Load Operating Current Draw | 450 mA |
| Stall Current Draw | 2,500 mA |
| Dead Band Width | 8 µs |
| Physical Specifications |
| Dimensions (Inches) | 1.59 x 0.77 x 1.48 |
| Dimensions (Metric) | 40.6 x 19.8 x 37.8 |
| Weight (Ounces) | 1.94 |
| Weight (Gram) | 55.2 |
| Circuit Type | HT7003 Analog SMT |
| Motor Type | 3 Pole Metal Brush Ferrite |
| Gear Material | Metal |
| Bearing Type | Dual Ball Bearing |
| Output Shaft (type / Ømm) | Standard 24 |
| Case Material | Plastic |
| Dust / Water Resistance | N / A |
| Connector Gauge (AWG) / Strand Count | 22 / 60 |
