Kpower HBL300 Brushless Servo Motor, 30.6 kg·cm Stall Torque at 7.4 V, for RC Models and Robotics

Kpower

$127.00 USD

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Version HBL300

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Overview

The Kpower HBL300 is an HV brushless servo motor for RC models, robotics and automated mechanisms. It combines metal gears, an aluminum middle case and potentiometer position sensing, with stall torque of 30.6 kg·cm at 7.4 V and a no-load speed of 0.15 s/60° at that voltage. Its listed operating range is 4.8–8.4 V, with PWM, TTL and RS-485 protocols.

Features

High-torque brushless motor with high-precision metal gears.
Aluminum alloy and plastic case construction, including an aluminum middle case.
Potentiometer position sensing and two ball bearings (2BB).
25T output spline with a diameter of 5.82 mm.
120° travel angle, described as customizable.

Specifications

Voltage-Dependent Performance

Parameter	At 6.0 V	At 7.4 V
Stall torque	28.5 kg·cm	30.6 kg·cm
No-load speed	0.16 s/60°	0.15 s/60°

Mechanical and Electrical Specifications

Parameter	Value
Model	HBL300
Servo type	HV brushless servo; high-torque classification
Rated torque	7.5 kg; torque unit requires clarification
Weight	65 g
Dimensions	40 × 20 × 39.4 mm
Travel angle range	120°; customizable
Operating voltage	4.8–8.4 V
Horn gear spline	25T, Ø5.82 mm
Gear material	Metal
Motor	Brushless
Protocols	PWM, TTL, RS-485
No-load current	4500 mA
Position sensor	Potentiometer
Case material	Aluminum alloy + plastic; aluminum middle case
Ball bearings	2BB
Working frequency	50–333 Hz
Operating temperature	−10 to 50 °C
IP rating	IP42
HBL-series cycle-life claim	Up to 1,000,000 cycles; test conditions not specified

Applications

RC aircraft and VTOL fixed-wing drones: Actuate control linkages using the brushless drive and metal gear train.
1/8- and 1/10-scale RC cars: Operate steering linkages where the voltage-dependent torque and speed suit the mechanism.
Robotics and service robots: Position joints and linkages using potentiometer feedback and the listed control protocols.
Industrial automation, industrial vacuum cleaners and drone docks: Position movable mechanisms with a 120° travel range.
Table-tennis serving machines: Adjust mechanical positioning through the geared servo output.
Medical-device mechanisms: Provide positional actuation through the brushless motor and geared output.