Suitable replacement actuators in our shop: Chain actuators
Updated: 07.11.2026
In brief: You can replace a faulty Becker tubular motor with a motor of another brand if diameter, torque and speed match. The values are on the rating plate on the motor cable or motor head. New adapters for the shaft are part of the job – the old adapters usually do not fit.
The data you need from the old motor
- Motor diameter: 35 mm (small shafts) or 45 mm (60 mm octagonal and larger)
- Torque in Nm and Speed in rpm from the rating plate – Becker often shows a pair of numbers, e.g. “12/17” for 12 Nm and 17 rpm
- Shaft shape and diameter, e.g. 60 mm octagonal
- Operation: Switch (mechanical end positions) or radio (electronic end positions)
- Installation side and space in the box next to the shaft end
Suitable replacement motors
| Old Becker motor | Replacement from A-OK | Net price |
|---|---|---|
| 35 mm, 6–10 Nm | A-OK AM35 (6/10 Nm) | from €69 |
| 45 mm, switch operation | A-OK AM45 mechanical (15–50 Nm) | from 65 € |
| 45 mm, radio | A-OK AM45 radio (6–30 Nm) | from €100 |
| Awning with crank | A-OK AM45E (30–50 Nm) | from €125 |
| External venetian blind | A-OK AM55 (6/10/20 Nm) | from €97 |
What to watch out for when changing brand
- Choose the same or slightly higher torque, not significantly lower.
- Radio transmitters of the old brand usually do not work with the new motor – a new transmitter is part of the job.
- The end positions are set again.
- The mains connection is done by a qualified electrician (see Connecting a roller shutter motor).
Removal is described in Replacing a roller shutter motor. There is a separate guide for Somfy motors: Replacing a Somfy tubular motor.
Frequently asked questions
Can I replace a Becker motor with another brand?
Yes, if diameter, torque and speed match and suitable adapters for the shaft are used.
Will my old transmitter work?
Usually not. Radio protocols are manufacturer-specific, so a new transmitter is paired.
Calculate the torque yourself: Roller shutter motor calculator. All guides on roller shutter, awning and external venetian blind motors: Sun protection guide.
Advice on the right motor
Send us the shaft diameter, curtain size and material – we will name the right A-OK motor. Phone 040 50694631 (Mon–Fri 8 am–5 pm) or via the Contact form. All motors at a glance: Sun protection motors.
Technically reviewed by Dietmar Heiken, Sales, Vent Systems HDI GmbH, Hamburg – around 20 years of industry experience. Questions? Phone +49 40 50694631 or info@ventsystems.de
Last updated: 07.11.2026
