Home > 110mm Servo Motor
| Item | Specifications |
|---|---|
| Flange Size | 110 mm (NEMA 42) |
| Motor Type | Permanent Magnet AC Servo, High Inertia |
| Rated Power | 1.2 – 1.8 kW |
| Rated Torque | 4 – 6 N·m |
| Feedback | 17-bit Absolute Encoder |
| Supply Voltage | 220V AC |
| Rated Speed | 2000 – 3000 rpm |
| Insulation Class | Class F |
| Protection | IP65 |
| Ambient Temperature | -20℃ ~ +50℃ |
| Brake | Optional (power-off) |
| Cooling | Natural |
| Model | Rated Power (kW) | Rated Torque (N·m) | Peak Torque (N·m) | Rated Speed (rpm) | Rated Current (A) | Standard length (mm) | Length with brake (mm) | Insulation/Protection | Voltage |
|---|---|---|---|---|---|---|---|---|---|
| 110BSF-H12030 | 1.2 | 4 | 12 | 3000 | 6 | 142 | 200 | Class F / IP65 | 220V |
| 110BSF-H15030 | 1.5 | 5 | 15 | 3000 | 5.5 | 152 | 210 | Class F / IP65 | 220V |
| 110BSF-H18030 | 1.8 | 6 | 18 | 2000 | 6.6 | 162 | 220 | Class F / IP65 | 220V |
*These are representative models. We can manufacture products according to customer’s requirements.
A 110mm servo motor is a mid-power permanent-magnet AC servo on a 110 mm flange, the NEMA 42 frame size. It is a high-inertia servo, built to drive heavier and more inertial loads with smooth, stable motion. It runs closed-loop on a 17-bit absolute encoder, so the drive always knows rotor position and holds it under load. It runs on a 220V supply and sits on CNC feed axes, robotic arms and mid-size automation.
The 110 frame comes in three models rated 1200 W, 1500 W and 1800 W, with rated torque from 4 to 6 N·m and peak torque to three times rated for acceleration. The 1200 W and 1500 W run to 3000 rpm; the 1800 W runs to 2000 rpm with more torque. Full figures per model are in the specification table above.
Inertia is how hard a load resists changes in speed. A servo controls a load best when the load inertia stays within about ten times the motor rotor inertia; beyond that the axis overshoots and is hard to tune. A high-inertia servo like the 110 carries a large rotor inertia, so it matches heavy or inertial loads — belt drives, large rotary tables, rolls, gantries — without forcing a gearbox in just to fix the ratio. If your load is light, a smaller, snappier servo is the better pick.
Yes. The 110 is a common choice for CNC feed axes — 1200 W to 1800 W with 4 to 6 N·m covers most mid-size machine-tool slides, and the high inertia keeps the axis stable under cutting load. The absolute encoder means no homing on power-up, and the motor can be supplied with a ball screw output for direct linear feed. Send the axis load, travel and speed and we will size the model.
Yes. Each 110mm 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. You can also pair the motor with your own drive — ask us for the data you need.
Yes to both. A power-off holding brake is available for vertical or inclined axes, and the braked version is longer — see the table for the dimension. A planetary gearbox is available to trade speed for torque, or to bring a very high load inertia further into range. Specify the gear ratio when you ask for a quote.
The 110mm servo uses a 17-bit absolute encoder for closed-loop feedback. Absolute means the axis knows its position the moment power comes on, so there is no homing routine after a power cycle — useful on loaded or vertical CNC and automation axes. The encoder also closes the loop continuously, so the motor holds position under a changing load.
Yes. The 110mm servo is built for OEM integration, so the shaft diameter, length and keyway can be made to your drawing. We can add a brake, fit a gearbox, supply a ball screw output, and change the connector and cable. Send your drawing or application and we will confirm what we can match.
The 110mm servo motor is a mid-power, high-inertia permanent-magnet AC servo on a 110 mm (NEMA 42) flange. It runs 1.2 to 1.8 kW with 4 to 6 N·m of rated torque and 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. The large rotor inertia is the point of this frame — it drives heavier, higher-inertia loads smoothly, which is why it sits on CNC feed axes, robotic arm joints and mid-size automation.
The 110 is the mid-power step in the servo range, built for axes that move real load with stable, repeatable motion:
A servo’s rotor inertia decides how well it controls the load. The working rule is to keep the load inertia within about ten times the motor’s rotor inertia; past that the axis overshoots, oscillates and is hard to tune. The 110 frame carries a large rotor inertia, from 0.45 to 0.75 ×10⁻³ kg·m², so it matches high-inertia loads on its own — belt and pulley drives, large rotary tables, web and roll handling, big gantries. A low-inertia servo on those loads would force a gearbox in just to bring the ratio down. The high-inertia 110 holds the ratio in range without the extra gear stage, so the motion stays smooth and stable.
| Low-Inertia Servo | High-Inertia 110 | |
|---|---|---|
| Rotor inertia | Small | Large |
| Suited load | Light, low-inertia | Heavy, high-inertia |
| Big load without a gearbox | Inertia mismatch, hard to tune | Matches directly, stays in range |
| Motion character | Fast, snappy | Smooth, stable under load |
| Typical use | Fast pick-and-place | Belt/pulley, rotary tables, CNC feed |
If your load is heavy or has high inertia — a flywheel, a big table, a roll — a high-inertia servo controls it better than a small, snappy one. If the load is light and you want maximum acceleration, a smaller frame is the better match.
All three models share the 110 mm frame and the absolute encoder; they differ in power, torque and speed. The 1.2 kW and 1.5 kW run to 3000 rpm for faster axes; the 1.8 kW trades top speed for more torque at 2000 rpm. Pick by the continuous torque your axis needs and the speed it runs — send the load and duty and we will confirm the model.
The 110mm servo suits mid-power axes that carry load and need accurate, repeatable motion:
Each 110mm 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 CNC feed axes the motor can be supplied with a ball screw output for direct linear motion. 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.
