Heavy-duty servos from 70 to 200 kg-cm of stall torque at 7.4 to 24 V for automation, AGV steering and large mechanisms, alongside the Robot-Grade compact sub-line of six 5 to 18 kg-cm models for robotic joints. Steel gear trains on the heavy models and continuous-duty electronics sized for production environments.
Above 70 kg-cm a servo stops being a model part and becomes an actuator. Mounting, supply, heat and gear life decide the selection, in that order.
Electric servos at this level deliver a controlled angle and holding torque where a hydraulic or pneumatic actuator would need a pump, valves and fluid, which simplifies installation and service.
Four of the five heavy models are rated between 9 V and 24 V, matching 12 and 24 V equipment rails and large battery packs instead of a 6 V servo supply.
Every model from 70 kg-cm up lists a steel gear train with a reinforced output, chosen for shock load and holding torque rather than for cost.
The six Robot-Grade models bring 5 to 18 kg-cm in cases from 40 x 20 mm to 60 x 38 mm at 40 to 80 g, sized for robot joints and competition builds rather than heavy machinery.
The line is engineered around sustained load: heat under duty, gear shock, and the variety of supplies an industrial buyer actually has.
Temperature sensing with software current limiting protects the drive under long holding duty, which is where servo electronics usually fail.
Variants are offered at 7.4, 8.4, 9, 12.6, 12 and 24 V, so the same mechanism can be built for battery, bench supply or machine-rail power.
Heavy models use steel gears and a reinforced output to resist tooth slip under shock; verify the shaft and horn interface against your own application torque.
Industrial housings are enclosed for dusty and oily environments; protection documentation is issued per model rather than as a series-wide rating.
Half of the Robot-Grade models list a half-duplex serial interface for multi-joint wiring and status readback; confirm protocol, connector and controller compatibility on the model row.
The 65 x 30 x 48 mm and 68 x 34 x 67 mm cases carry the 70 to 200 kg-cm models at 181 to 355 g; mounting-hole drawings are supplied per model.
11 models: six Robot-Grade compacts and five heavy-duty servos up to 200 kg-cm. 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 |
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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. Stall current is not listed in the factory record for the Robot-Grade sub-line. Figures are reproduced from factory test records without normalisation; if a value looks inconsistent with your calculation, request the original test record before design-in. A dash means the value is not listed in the factory record for that model.
Four ways to narrow the line: the robot-joint sub-line, the case family, the supply voltage, and whether the axis needs sealing.
Robot joints, competition builds and service mechanisms in cases from 40 x 20 mm to 60 x 38 mm, at 40 to 80 g and 6.0 or 7.4 V.
The sealed 194 g aluminium-case actuator for industrial and outdoor axes, rated at 7.4 and 8.4 V.
The 181 g iron-core models for machine axes, turntables and arm joints on 9 to 12.6 V supplies.
The 355 g heavy drives on 12 and 24 V for AGV steering, large arms, marine duty and heavy control surfaces.
Send the payload, arm length, duty cycle, supply voltage and mounting envelope. We can shortlist torque and voltage, confirm what the gear train will take, and tell you where a servo is the wrong answer.