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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.
Specifications
| Motor Type: | 3 Pole |
| Bearing Type: | Dual Ball Bearing |
| Speed (4.8V/6.0V): | 0.24 / 0.20 |
| Torque oz./in. (4.8V/6.0V): | 107 / 133 |
| Torque kg./cm. (4.8V/6.0V): | 8.0 / 10.0 |
| Size in Inches: | 1.59 x 0.77 x 1.48 |
| Size in Millimeters: | 40.39 x 19.56 x 37.59 |
| Weight ounces: | 1.94 |
| Weight grams: | 55 |
Equipments required
 | KAV20.3712 Name: Servo arm Double 114mm (4,5") 25teeth M3 Price: 17,46€  Delivery status: in stock at supplier Aluminium double servo arm with offset for servos with 25teeth output shaft (Hitec Dxxx/HS-8xxx/HSB-9xxx, Savöx a Futaba). Made of aluminium, with M3 threads for ball links. Distance between M3 holes: 114mm ; 102mm ; 89mm ; 76,5mm ; 63,5mm. |
 | KAV20.3711 Name: Servo arm Double 89mm (3,5") 25teeth M3 Price: 16,63€ Delivery status: in stock at supplier Aluminium double servo arm for servos with 25teeth output shaft (Hitec Dxxx/HS-8xxx/HSB-9xxx, Savöx a Futaba). Made of aluminium, with M3 threads for ball links. Distance between M3 holes: 89mm ; 76,5mm ; 63,5mm. |
 | KAV20.3706 Name: Servo arm 51mm (2") 25teeth M3 Price: 13,71€ Delivery status: in stock at supplier Aluminium servo arm for servos with 25teeth output shaft (Hitec Dxxx/HS-8xxx/HSB-9xxx, Savöx a Futaba). Made of aluminium, with M3 threads for ball links. Distance between servo shaft and M3 holes: 36mm ; 42,5mm ; 51mm. |
 | KAV20.3710 Name: Servo arm Double 64mm (2,5") 25teeth M3 Price: 13,71€ Delivery status: in stock at supplier Aluminium double servo arm for servos with 25teeth output shaft (Hitec Dxxx/HS-8xxx/HSB-9xxx, Savöx a Futaba). Made of aluminium, with M3 threads for ball links. Distance between M3 holes: 64mm ; 50mm ; 38mm. |
 | KAV20.3705 Name: Servo arm 45mm (1,75") 25teeth M3 Price: 12,04€ Delivery status: in stock at supplier Aluminium servo arm for servos with 25teeth output shaft (Hitec Dxxx/HS-8xxx/HSB-9xxx, Savöx a Futaba). Made of aluminium, with M3 threads for ball links. Distance between servo shaft and M3 holes: 45mm ; 38mm ; 32mm. |
 | KAV20.3704 Name: Servo arm 38mm (1,5") 25teeth M3 Price: 11,21€ Delivery status: in stock at supplier Aluminium servo arm for servos with 25teeth output shaft (Hitec Dxxx/HS-8xxx/HSB-9xxx, Savöx a Futaba). Made of aluminium, with M3 threads for ball links. Distance between servo shaft and M3 holes: 38mm ; 32mm. |
 | KAV20.3701 Name: Servo arm 32mm (1,25") 25teeth M2 Price: 10,79€ Delivery status: in stock at supplier Aluminium servo arm for servos with 25teeth output shaft (Hitec Dxxx/HS-8xxx/HSB-9xxx, Savöx a Futaba). Made of aluminium, with M3 threads for ball links. Distance between servo shaft and M3 holes: 32mm ; 25,5mm. |
 | KAV20.3703 Name: Servo arm 32mm (1,25") 25teeth M3 Price: 10,79€ Delivery status: in stock at supplier Aluminium servo arm for servos with 25teeth output shaft (Hitec Dxxx/HS-8xxx/HSB-9xxx, Savöx a Futaba). Made of aluminium, with M3 threads for ball links. Distance between servo shaft and M3 holes: 32mm ; 25,5mm. |
 | KAV20.3702 Name: Servo arm 25mm (1") 25teeth M3 Price: 9,96€ Delivery status: in stock at supplier Aluminium servo arm for servos with 25teeth output shaft (Hitec Dxxx/HS-8xxx/HSB-9xxx, Savöx a Futaba). Made of aluminium, with M3 threads for ball links. Distance between servo shaft and M3 hole: 25mm. |
 | KAV20.3915 Name: Carbon control horn 110 x 31mm Price: 6,21€ Delivery status: in stock at supplier Two-arm universal arc carbon lever for servos 110x31 mm, center hole 9 mm. For screwing onto standard plastic servo blades. |
 | KAV20.3911 Name: Carbon control horn 110 x 22mm Price: 4,13€ Delivery status: in stock at supplier Two-arm universal carbon lever for servos 110x22 mm, center hole 8 mm. For screwing onto standard plastic servo blades. |
 | KAV20.3913 Name: Páka serva uhlíková jednoramenná 66 x 22,5mm Price: 3,71€ Delivery status: in stock at supplier Jednoramenná univerzální uhlíková páka pro serva 66x22.5 mm, středový otvor 7 mm. Pro našroubování na standardní plastové kotouče serv. |
 | KAV20.3914 Name: Carbon control horn 40x21mm Price: 2,88€ Delivery status: in stock at supplier Single arm universal carbon servo lever 40x21 mm, center hole 9 mm. For screwing onto standard plastic servo blades. |
 | KAV20.3916 Name: Carbon control horn 53 x 20 Price: 2,88€ Delivery status: in stock at supplier Single arm universal arc carbon lever for servos 53x20 mm, center hole 9 mm. For screwing onto standard plastic servo blades. |
 | KAV20.3912 Name: Carbon control horn 60 x 22,5mm Price: 2,88€ Delivery status: in stock at supplier Two-arm universal carbon lever for servos 60x22.5 mm, center hole 7 mm. For screwing onto standard plastic servo blades. |
 | KAV20.3700 Name: Servoscrew M3x6 10pcs Price: 2,46€ Delivery status: contact us Screw for screwing into standard servo with metal gears to fix the lever. Hexagon socket head, black. The package is 10pcs. |
Spare parts
Equipments required for models
 | 1HI1023 Name: AGGRESSOR SRX 40MHz PLL Syntheza Tx bez Rx Price: 41,63€ Delivery status: in stock at supplier Tříkanálový volantový počítačový vysílač FM s VF modulem s frekv. syntézou 40MHz s Tx aku. Paměť 10 modelů, nastav. výchylky, Expo, subtrim, revers. Neobsahuje přijímač. |