Integrated servo motor
WITTENSTEIN alpha premo SP / TP / XP Line servo actuators integrated servo motor
Servo actuators that combine a WITTENSTEIN servo motor and alpha planetary gearbox in one compact unit, in SP, TP and XP lines.
Key specifications
| Peak torque (max) | 450 Nm |
|---|---|
| Speed (max) | 375 rpm |
| Supply | 320 V or 560 V DC link |
| Feedback | resolver (standard), digital one-cable encoders, SIL2 motor encoders |
| Ratio | 16–100:1 |
| Backlash (max) | 5 arcmin |
Summarised in our own words from WITTENSTEIN SE's published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1 · Source 2 · Source 3
Notes on this data
Max acceleration torque: SP 315 Nm, TP 380 Nm, XP 450 Nm; all 3 sizes, max output speed 375 rpm. Backlash SP <=3-5, TP <=1-3, XP <=2-4 arcmin. speed_rpm_max is gearbox output speed. Family set to servo-motors/integrated-servo (motor+gearbox unit); IP rating not on pages.
Specify Motion is not affiliated with WITTENSTEIN SE. WITTENSTEIN alpha and premo SP / TP / XP Line servo actuators are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Typical applications
Alternatives that meet or exceed these figures
Engineers often come to us with a WITTENSTEIN alpha part number and leave with an alternative that is easier to source, quicker to deliver or a better fit for the machine. These 3 series from our supply network are the closest match on published figures.
Leadshine motor-plus-drive units from 200 to 750 W on 24-48 VDC, with 17-bit magnetic encoders, CANopen or Modbus/pulse control and up to 300% overload, published in the Leadshine low-voltage DC catalogue.
| Published maximum | premo SP / TP / XP Line servo actuators | iSV2 Integrated Low-Voltage Servo Motors |
|---|---|---|
| Rated torque | — | 2.39 Nm |
| Peak torque | 450 Nm | 7.2 Nm |
| Speed | 375 rpm | 4,000 rpm meets or exceeds |
| Power | — | 750 W |
Kinco's latest integrated low-voltage servo motor with the drive built in, offered in 40, 60 and 80 mm frames from 100 to 750 W. It carries CANopen, Modbus RTU or EtherCAT, IP65 as standard (IP67 optional) and an optional gear reducer.
View series →First-generation Kinco integrated servo motors for intelligent logistics: 200-750 W, 3000 rpm, with 16-bit absolute feedback and a choice of pulse, CANopen, EtherCAT or Profinet control.
View series →Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
What an integrated servo motor is
An integrated servo motor combines the servo motor, drive and feedback, and often a motion controller, in one housing. Power and communications connect directly to the motor, often over a single hybrid cable or a shared DC bus, so there is no separate drive in the cabinet. Control is by pulse, analogue, fieldbus or industrial Ethernet, and many units support stored motion profiles. The motor is usually brushless with an absolute or high-resolution encoder.
When engineers choose an integrated servo motor
Choose an integrated servo for distributed or modular machines, AGVs, and where cabinet space and wiring are limited. Fewer components and shorter cables simplify installation. The trade-offs are heat, power range and service: electronics sit on the motor in the machine environment, power is typically limited to a few hundred watts or a few kilowatts, and a failure means replacing the whole unit. For high-power or harsh-environment axes, separate drives are often better.
How to specify the WITTENSTEIN alpha premo SP / TP / XP Line servo actuators
Send these with your enquiry and an engineer can confirm the right premo SP / TP / XP Line servo actuators variant or an equivalent:
- Power and continuous torque (W, Nm)
- Speed (rpm)
- Supply voltage: low-voltage DC or mains (V)
- Communication interface and protocol
- Feedback type and absolute position
- Safety functions such as STO
- IP code, ambient temperature and connectors
Common mistakes to avoid
- Mounting in a hot location and derating the integrated electronics
- Assuming all protocols are supported on all variants
- Leaving out STO where the risk assessment requires it
- Forgetting about spares when drive and motor are one part
WITTENSTEIN alpha premo SP / TP / XP Line servo actuators: frequently asked questions
What is the WITTENSTEIN alpha premo SP / TP / XP Line servo actuators?
Servo actuators that combine a WITTENSTEIN servo motor and alpha planetary gearbox in one compact unit, in SP, TP and XP lines. Published series figures include peak torque 450 Nm, speed 375 rpm, ratio 16:1, ratio 100:1. It is made by WITTENSTEIN SE; Specify Motion can help source it or propose an equivalent.
Who makes the WITTENSTEIN alpha premo SP / TP / XP Line servo actuators?
The WITTENSTEIN alpha premo SP / TP / XP Line servo actuators is made by WITTENSTEIN alpha (WITTENSTEIN SE) and is listed here for engineers comparing options. Specify Motion is not affiliated with WITTENSTEIN SE; brand names are used only to identify the product.
What is the peak torque of the WITTENSTEIN alpha premo SP / TP / XP Line servo actuators?
The published series maximum peak torque is 450 Nm. Individual models and sizes in the premo SP / TP / XP Line servo actuators range vary, so check the exact variant against your duty cycle, mounting and environment, or ask our engineers to confirm the right size for you.
Is there an alternative to the WITTENSTEIN alpha premo SP / TP / XP Line servo actuators?
Yes. On published figures, Leadshine iSV2 Integrated Low-Voltage Servo Motors and Kinco iSMK Series Integrated DC Servo Motors (iSMK40/60/80) are the closest match from our supply network. An engineer confirms the fit against your application before recommending anything.
What are the benefits of an integrated servo motor?
An integrated servo reduces cabinet space, wiring and installation time because the drive is built into the motor. Shorter motor cables reduce EMC issues. This suits modular and mobile machines. The trade-off is that the electronics share the motor's environment and the whole unit must be replaced on a fault.
Do integrated servo motors support safe torque off?
Many do, as an option on selected models. STO removes power that could produce torque without removing the supply, and is used as a safety function in machine guarding. Check the safety integrity level or performance level achieved and that the variant you choose includes it.
Further reading: How to select an integrated servo motor · How to select a servo motor · Servo and stepper motors
Other integrated servo motor series
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