What Motor Do I Need for Roller Blinds? (Complete Guide Australia)
The right roller blind motor is the one that fits the tube, has enough torque for the blind, can be powered safely and works with the controls you want. Choosing by brand or voltage first can create an expensive compatibility problem.
Browse the current products on our roller blind motors hub while you work through the four decisions below.
The four decisions that determine the right motor
Tube compatibility: the motor body, crown and drive must fit the roller tube.
Torque: the motor must provide enough turning force for the complete blind load.
Power: choose rechargeable, 240V or 12V to suit the installation.
Controls: choose a compatible remote, wall control, hub or automation protocol.
1. Identify the roller blind tube
A tubular motor sits inside the aluminium roller tube. A crown supports the motor at the head, while a drive transfers the motor's rotation into the tube. Those adaptors must match the internal tube profile.
Two tubes with a similar outside diameter can use different crown-and-drive sets. A motor that slides inside the tube is not necessarily compatible.
For an existing blind, start with the tube identification guide. It covers common Australian profiles and shows motors confirmed for each tube.
What to record
A straight-on photo of the open tube end.
The outside diameter of the bare aluminium tube.
The finished blind width and fabric drop.
Photos of the control bracket and idler bracket.
The fabric type: sunscreen, light-filtering or blockout.
2. Choose the correct torque
Torque is the motor's turning force and is measured in Newton metres, shown as Nm. Blind width is only one part of the calculation. Fabric weight, drop, tube diameter, bottom rail, hardware friction and linked blinds also affect the load.
Around 0.7Nm suits some very small, light blinds.
Around 1.1–1.5Nm covers many ordinary residential blinds when the tube and load are suitable.
Around 2Nm is used for larger or heavier residential blinds.
Around 4–6Nm and above is used for large, heavy, linked or specialist blinds.
These are practical bands, not a universal width chart. A stronger motor cannot compensate for a weak tube, incorrect adaptors or a blind that is binding.
Read the full roller blind motor torque guide before choosing an Nm rating.
3. Choose rechargeable, 240V or 12V
Rechargeable
Rechargeable motors are usually the simplest choice for retrofits and finished homes. There is no permanent mains cable at the window and an electrician is not normally required for the motor installation. The trade-off is periodic charging and the need for accessible charging ports.
240V hardwired
A 240V motor suits projects where wiring can be planned in a new build or renovation, or where eliminating routine charging is a priority. A licensed electrician is required for the mains electrical work.
12V low voltage
A 12V motor suits purpose-designed low-voltage power and automation systems. Power-supply sizing, cable distance and integration need to be planned as part of the project.
Compare the trade-offs in Rechargeable vs 240V vs 12V Roller Blind Motors.
4. Choose the control system
A basic radio remote can operate a compatible motor without a hub. App control, voice control, scenes and remote access normally require a compatible hub. The motor brand and radio protocol determine which controls can be used.
Automate ARC motors use compatible Automate remotes, wall controls and hubs.
Somfy offers RTS and Zigbee motor options with matching controls and smart-home pathways.
Automate and Somfy native remotes and hubs are not automatically interchangeable.
Rechargeable, 240V and 12V describe power; they do not describe the radio protocol.
See How to Control Roller Blind Motors for remotes, timers, apps, voice control and hubs.
Automate or Somfy?
Both brands offer established roller blind motor systems. The better choice depends on which motors fit the tube, the required torque and power, any equipment already installed in the home, and the control features you will actually use.
Our Automate vs Somfy comparison breaks down the decision without declaring a one-size-fits-all winner.
Existing blind or new build?
For an existing roller blind, the current tube and brackets constrain the retrofit. Identify them first. If the tube is unsuitable, the fabric can often be transferred to a motor-ready tube rather than replacing the whole blind.
For a new build, the tube, motor and wiring can be selected as one system. That creates more flexibility for concealed 240V or centrally powered 12V installations.
Common mistakes to avoid
Buying a motor because its diameter looks close to the tube.
Choosing torque from blind width alone.
Assuming 240V is always more powerful than rechargeable.
Assuming every motor from one brand uses the same remote or hub.
Ignoring charging-port access on a rechargeable retrofit.
Using a larger motor to hide a damaged or sagging tube.
Quick selection checklist
Identify the tube profile and measure its diameter.
Record width, drop, fabric type and whether blinds are linked.
Select a compatible motor with the correct Nm rating.
Choose rechargeable, 240V or 12V power.
Confirm the exact remote, hub or automation protocol.
Check crown, drive, brackets, charger or wiring before ordering.
Ready to choose? Browse all roller blind motors, compare the best rechargeable motors, or send us your tube photo and measurements.
