80mm AC Servo Motor: 750W to 1kW for Mid-Size Automation
The 80mm servo motor is a mid-size permanent-magnet AC servo on an 80 mm (NEMA 32) flange. It runs 0.75 to 1 kW with 2.39 to 4.5 N·m of rated torque and about three times that as peak, on a 220V supply, and turns at up to 3000 rpm. It runs closed-loop on a 17-bit absolute encoder, so the axis knows its position on power-up and holds it under load. It is the step up from the 60mm frame, sized for mid-size handling, feed axes and general automation where a small servo runs short on torque.
Where the 80mm Servo Fits
The 80 frame is the mid-size industrial servo — more torque than the 60 frame, still compact and fast:
- 0.75 to 1 kW and 2.39 to 4.5 N·m — the 750W and 1kW class for mid-size machines.
- 17-bit absolute encoder — no homing routine, the axis keeps position through power cycles.
- 80 mm frame — a straight step up from the 60mm servo motor when it runs short on torque.
- 220V mains, IP65 sealing and Class F insulation for the factory floor.
Same Power, Different Speed and Torque
The 80 frame has two 1 kW models, and the difference is a useful thing to understand. Power is torque times speed, so at the same 1 kW you can have more speed with less torque, or more torque with less speed. The S10030 turns to 3000 rpm at 3.2 N·m for speed-led axes; the S10020 turns to 2000 rpm at 4.5 N·m for torque-led axes. Same power, matched to what the axis actually needs.
| Model | Power | Speed | Rated Torque | Pick When |
|---|
| 80BSF-S07530 | 750 W | 3000 rpm | 2.39 N·m | Fast axes at 750 W |
| 80BSF-S10030 | 1 kW | 3000 rpm | 3.2 N·m | Speed-led 1 kW axes |
| 80BSF-S10020 | 1 kW | 2000 rpm | 4.5 N·m | Torque-led 1 kW axes |
If the axis runs fast, take the 3000 rpm model; if it moves heavier load slower, take the 2000 rpm model. Send the load and speed and we will confirm which 1 kW build fits, or whether the 750W is enough.
Typical Applications
The 80mm servo suits mid-size axes that need more torque than a small servo, at speed:
- Mid-size handling and transfer axes — more torque with fast, repeatable motion.
- Feed axes on small and mid CNC — accurate positioning under cutting load.
- Conveyors, indexers and rotary tables — steady torque on moderate loads.
- Packaging and converting machinery — heavier heads and drives than a 60 frame.
- Winders, tensioners and pumps — controlled torque at running speed.
- Automation cells and assembly — mid-power positioning across the machine.
Drive and Customization
Each 80mm servo ships with a matched servo drive, sized and tuned to the motor as a tested set, so commutation, gain and inertia matching are set before delivery. The drive runs position, speed and torque modes, with pulse and direction or bus communication depending on the model. For heavier axes, the 110mm servo motor is the next frame up. Common changes: shaft diameter, length and keyway to your drawing, a power-off holding brake for vertical axes, a planetary gearbox, and connector and cable to suit. As a servo motor manufacturer, we test the motor and drive together and ship the encoder built in.