A-OK AM45 tubular motor mechanical 15–50 Nm

In brief: The A-OK AM45 mechanical is the standard tubular motor for roller shutters on a 60 mm octagonal shaft as well as for roller doors and awnings: 15 to 50 Nm, mechanical end positions on the motor head, operated via wall switch. Price from €65 net at Vent Systems in Hamburg.

The A-OK AM45 with mechanical end positions is the standard tubular motor for roller shutters with a 60 mm octagonal shaft as well as for roller doors and awnings. The end positions are set directly on the motor head, and the double brake ensures smooth running.

Technical Data

Torque / speed	15, 20, 30 Nm / 17 rpm; 40, 50 Nm / 12 rpm
Voltage	230 V AC, 50/60 Hz
Performance	145–250 W (depending on model)
Motor diameter	45 mm
Suitable shafts	Ø 54–80 mm, e.g. 60 mm octagonal shaft
Protection class	IP44
End positions	mechanical, max. 45 revolutions
Operation	Wall switch (up/down)

Features

• Easy adjustment of the limit switches
• Quiet, up to 45 dB (according to manufacturer)
• Patented double brake
• Suitable for roller shutters, roller doors, awnings

Versions

Model	Version	Net price
AM45-15/17	15 Nm	65,00 €
AM45-20/17	20 Nm	68,00 €
AM45-30/17	30 Nm	76,00 €
AM45-40/12	40 Nm	88,00 €
AM45-50/12	50 Nm	97,00 €

Note: Connection to 230 V must be carried out by a qualified electrician. Technical data according to the A-OK 2026 manufacturer catalogue. Selection guide: Retrofit a roller shutter motor.

Frequently asked questions

Which roller shutter does the AM45 mechanical fit?

Calculated with a 60 mm octagonal shaft (winding radius approx. 5 cm), the AM45 mechanical handles these roller shutters depending on torque:

Torque	max. curtain weight	approx. shutter area (PVC, 4.5 kg/m²)
15 Nm	up to approx. 20 kg	up to approx. 4.4 m²
20 Nm	up to approx. 27 kg	up to approx. 6 m²
30 Nm	up to approx. 40 kg	up to approx. 8.8 m²
40 Nm	up to approx. 54 kg	up to approx. 12 m²
50 Nm	up to approx. 67 kg	up to approx. 14.8 m²

Guide values based on the formula torque = curtain weight × 9.81 × winding radius × 1.5 (reserve for friction). Aluminium, wooden or security curtains are heavier – then choose the next size up. If in doubt, send us width, height and material and we will size the motor.

What torque do I need for my roller shutter?

That depends on the area and material of the curtain. PVC roller shutters need less force than aluminium. The roller shutter motor guide explains how to calculate the torque; if in doubt, we will advise you by phone.

How do I set the end positions?

The upper and lower end positions are set with the two adjusting screws on the motor head. You will find the German operating manual under Downloads.

Can I control the mechanical AM45 by radio later?

A mechanical motor is operated via a wall switch. If you want radio control, it is better to choose the A-OK AM45 radio tubular motor with electronic end positions right away.

More on selection: Roller shutter motor guide. Questions? Phone +49 40 50694631 or Send inquiry.

In the glossary: Octagonal shaft · Limit switch-off