Kpower DHV821 Coreless Digital Servo, 0.03 s/60° at 7.4 V, for R/C Cars and Aircraft

Kpower

$103.00 USD

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Version DHV821

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Overview

The Kpower DHV821 is an HV coreless digital servo for R/C cars, aircraft and controlled mechanisms in robotics and smart-home projects. Its 0.03 s/60° no-load speed at 7.4 V supports fast positioning, while metal gears and an aluminum-alloy case provide its mechanical construction. Measuring 40 × 20 × 39 mm and weighing 72 g, it operates from 4.8–8.4 V and has a customizable 120° travel range.

Features

High-speed digital servo with a coreless motor.
Metal gears, an aluminum-alloy case and two ball bearings (2BB).
Potentiometer position sensing.
25T, Ø5.9 mm splined output shaft with a central threaded opening.
Mounting tabs with four open-ended mounting slots.
120° travel angle range, customizable.
Listed control protocols: PWM, TTL and RS-485.

Specifications

Parameter	DHV821
Servo type	HV coreless digital servo; high-speed type
Stall torque	5.9 kg·cm at 7.4 V
Rated torque	1.5 kg
No-load speed	0.03 s/60° at 7.4 V
Weight	72 g
Dimensions	40 × 20 × 39 mm
Travel angle range	120°; customizable
Operating voltage	4.8–8.4 V
Horn gear spline	25T, Ø5.9 mm
Output-shaft detail	Splined shaft with central threaded opening
Mounting	Mounting tabs with four open-ended slots
Gear material	Metal
Motor	Coreless motor
Protocols	PWM, TTL, RS-485
No-load current	3100 mA
Position sensor	Potentiometer
Case material	Aluminum alloy
Ball bearings	2BB
Working frequency	50–333 Hz
Operating temperature	−10 to 50 °C
IP rating	IP42

Applications

R/C cars and aircraft: Actuate steering and control linkages where the 0.03 s/60° no-load speed at 7.4 V is useful for rapid position changes.
Robotic mechanisms: Position joint or linkage mechanisms using potentiometer feedback and a splined output shaft for mechanical coupling.
Smart-home mechanisms: Move compact linkages within the servo's 120° travel range, with mounting tabs for securing the housing.
Medical-device mechanism development: Provide controlled angular motion for compact linkages using a coreless motor and potentiometer position sensing.