Product overview
The Kpower DHV840-W 40 kg is a waterproof servo actuator for integration into drone, RC and robotic mechanisms. Its physical architecture combines an aluminum-alloy housing, metal gears with a high-precision titanium coating, a coreless motor, 2BB bearings and potentiometer position sensing. The body measures 40x20x42.8mm and weighs 76g, defining the space and mass required within the host mechanism. Mechanical output uses a 25T spline with a diameter of 5.88mm, while specified travel is 180°, with customization supported.
Electrical integration requires a 4.8-7.4V supply. At 7.4V, the servo provides 40kg·cm stall torque and a no-load speed of 0.18sec/60°; stall current at that voltage is 5200mA. PWM is the listed control protocol, with customization supported, while TTL/RS485 support is associated with customizable serial-port control. The servo carries an IP67 waterproof rating and an operating temperature range of -10 to 50°C. These torque, speed and current figures retain their distinct stall or no-load conditions when assessing actuator suitability.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and model | Kpower DHV840-W 40 kg |
| Product type and purpose | Waterproof coreless servo for RC, robot, drone and robotic-arm applications. |
| Construction | All-metal construction. |
| Gear treatment | High-precision titanium-coated gears. |
| Stall torque | 40kg·cm @7.4V7.4V supply. |
| No-load speed | 0.18sec/60° @7.4VNo load; 7.4V supply. |
| Travel angle | 180°; customization supported.Customization supported. |
| Voltage range | 4.8-7.4V |
| Dimensions | 40x20x42.8mm |
| Weight | 76g |
| Stall current | 5200mA @7.4VStalled; 7.4V supply. |
| Housing material | Aluminum alloy. |
| Gear material | Metal. |
| Output spline | 25T Φ5.88mm |
| Motor | Coreless motor. |
| Bearings | 2BB |
| Position sensor | Potentiometer. |
| Signal and protocol | PWM; customization supported.Customization supported. |
| Serial interface options | Customizable serial-port control supporting TTL/RS485.Customized serial-port control. |
| Waterproof rating | IP67; customization supported.Customization supported. |
| Operating temperature | -10～50°C |
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