Digital brushless servos from 5 to 35 kg-cm of stall torque, up to 50 kg-cm at 8.4 V, in the standard 40 x 20 mm case. Long service life and stable response under high duty cycle, with sealed and low-profile variants for off-road, marine and tight-deck builds, plus a high-speed sub-line for competition helicopters.
Brushed servos lose torque and consistency as the commutator wears. For machines that cycle thousands of times a week, a brushless drive stays close to the numbers it was specified at.
No commutator and brushes to wear down, so the service interval is set by the gear train rather than by the motor.
Speed and torque hold through repeated full-range cycles instead of fading as the motor warms, which is why competition teams move to brushless.
Sealed low-profile models reach 17 kg-cm in a case under 30 mm tall, so steering torque that used to need a full-height servo fits a shallow deck.
The 40 x 20 mm mounting footprint and PWM signal input are shared across the series, so a worn brushed servo can be swapped without new brackets or a new transmitter setup.
The line is built around impact loads and water, which is where most field failures come from on off-road, marine and tight-deck models.
Twenty-one of the twenty-three models list steel gears chosen for shock load and backlash retention; the other two list a metal gear set. Confirm the gear material on the model row rather than assuming it across the series.
The output shaft takes crash loads and side load from steering arms and control linkages directly, so bearing support is reinforced for those forces.
Thirteen models add O-ring sealing at the case seams and shaft to keep out water and mud. Protection documentation is issued per model rather than as a series-wide rating.
Gear train staging is compressed so a 29.7 mm tall case still holds 13 kg-cm at 6.0 V, the usual height limit inside a 1:10 scale deck.
Torque, speed and current are published at both operating voltages on every model, so performance is matched to the battery actually used rather than one test point.
The H sub-line is tuned for a narrow dead band and fast reversal on helicopter swashplate and tail duty; the other models prioritize torque and duty cycle.
23 models, all PWM brushless. Click any model to expand its full specifications and recommended application. Torque values are stall torque at the rated voltage.
| Image | Model | Voltage | Stall Torque | No-Load Speed | Stall Current | Weight | Dimensions | Motor | Gear | Key Feature |
|---|
Rated torque is the continuous-duty working value; stall torque is the peak mechanical limit and stays the sizing reference. Model codes shown with a brand prefix placeholder. Photos, simplified dimension drawings and datasheet links are placeholders; real assets will be added before launch. Detailed CAD files are factory-confidential and are not distributed. Custom codes, packaging and labeling are available under our OEM / white-label program.
Four ways to narrow the line: case height, torque at your supply voltage, sealing, and speed.
Waterproof low-case servos for chassis decks, tight fuselages and retract bays where a standard 40 mm height will not close the cover.
Steering, throttle and general surface control for 1:8 and 1:10 on-road and off-road models, mid-size fixed-wing, boats and OEM mechanisms.
Large off-road and short-course steering, heavy control surfaces and winch or latch mechanisms, with up to 50 kg-cm available at 8.4 V.
Light, fast servos for 3D and competition helicopter swashplates and tail actuators, where response rate matters more than peak torque.
Tell us the load on the output shaft, the travel angle, the cycles per hour, the supply voltage and the space available. We can shortlist torque, case height and whether a sealed variant is worth the change.