HS-645MG Hitec High Torque Metal Gear 24T Analog Sport Servo

HS-645MG High Torque Metal Gear 24T Analog Sport Servo

Experience superior control and lasting performance with the HS-645MG High Torque Metal Gear Servo. Known for its high torque and rugged construction, Hitec’s most popular and trusted servo is a top performer in a wide range of demanding RC applications. Whether you're pushing the limits of a rock crawler, fine-tuning control surfaces on an aircraft, or dialing in steering on your RC truck, the HS-645MG delivers consistent, reliable performance when it matters most.

Built to thrive under pressure, the HS-645MG is equipped with a robust Cored Metal Brush Motor, heavy-duty metal gears, and dual ball bearings for smooth, efficient operation and long-term dependability. Its analog control system ensures responsive movement, making it a favorite upgrade for hobbyists who demand both muscle and finesse in their RC builds.

NOTE: The HS-645MG is the 24T version of the 25T HS-648MG.

Key Features

• High Torque Output: With a torque rating of up to 133 oz-in @ 6.0V, the HS-645MG delivers exceptional strength for steering, throttle, and control surface applications.
• Metal Gear Train: Built with 1 MP (Metal + Plastic) & 3 Metal Gears, it provides long-lasting performance and increased crash resistance over plastic gear counterparts.
• Cored Metal Brush Motor: Designed with Hitec’s cored motor, the HS-645MG provides dependable speed, torque, and long service life.
• Ball Bearing Support: Even during heavy-duty use, the dual ball bearings on the output shaft ensure smooth operation and reduced wear.
• Standard Fit: Its standard size makes it compatible with many popular RC platforms.

Specifications

• Operating Voltage Range: 3.5V ~ 6.8V (2S LiFe)
• Torque:
  • 4.8V: 106.93 oz-in (7.7 kgf-cm)
  • 6.0V: 133.32 oz-in (9.6 kgf-cm)
• Speed:
  • 4.8V: 0.24 sec/60°
  • 6.0V: 0.20 sec/60°
• Dimensions: 1.60 x 0.78 x 1.49 in (40.6 x 19.8 x 37.8mm)
• Weight: 1.95 oz (55.2g)
• Position Sensor Type: Analog
• Output Spline: 24T

Ideal Applications

• 1/10 and 1/8 scale RC trucks and buggies
• RC planes with large control surfaces
• Rock crawlers and trail rigs
• RC boats and other high-load steering systems