When choosing tubular motors for roller shutters, the following key buyers need to be considered comprehensively to ensure that the motor matches the roller shutter system and achieves safe, stable and efficient operation:

1. Determine the motor type
AC tubular motor (AC)

Features: simple structure, low price, easy maintenance, but loud noise, obvious start-stop impact.

Applicable scenarios: ordinary household or commercial Roller Shade (such as offices and shops), scenarios with limited budgets and insensitive to noise.

Voltage: usually 220V (domestic) or 110V (some overseas regions).
At present, most domestic manufacturers only stock 220V tubular motors, and 110V is only manufactured when large buyers place orders. Therefore, when small batch orders are <100 units, there will often be no inventory, which affects the needs of customers with small batch orders.
EMLUX only produces tubular motors with built-in transformers that are compatible with 100-240VAC. The motor does not need to consider AC voltage, and has regular safety stocks to meet your needs in a timely manner.


DC tubular motor (DC)

Features: low noise, smooth operation, energy saving, support soft start/stop, long life, but high price.

Applicable scenarios: residential (especially bedroom, study), hospital, hotel and other places that require a quiet environment.

Voltage: common 12 or 24V, higher safety.


EMLUX's 25mm and 35mm tubular motors have built-in DC transformers, electronic stroke design, silent motors, and built-in smart hardware modules to connect with Google assistant and Amazon alexa.

Lithium battery/solar motor (wiring-free)
Emlux's 25mm lithium battery has a built-in 12V lithium battery capacity of 2800maH, and the 35MM lithium battery has a built-in 12V4500Mah lithium battery. The battery capacity is high, and the motor can be on for 9 months when not working. It can be embedded in smart modules and linked with other smart devices in the home.


Features: No wiring required, suitable for power-free environments, but requires regular charging or solar panels.

Applicable scenarios: sun room, outdoor awning, temporary buildings, etc.


2. Key parameter matching
Tube diameter (Φ)

Common sizes: 35mm, 45mm, 59mm, 70mm, etc., need to match the inner diameter of the Blind Roller tube.

Note: Some heavy roller shutters require a larger tube diameter (such as 85mm) to enhance torque.

Torque (Nm)

Calculation formula: Torque ≥ Roller shutter weight (weight of fabric plus bottom rail) (kg) × Window Roller Blinds radius (m) × Safety factor (1.2~1.5)


Example: If the roller shutter weight is 20kg and the roller shutter tube radius is 0.1m, the required torque is ≥20×0.1×1.3=2.6Nm.

Reference range:

Small roller blinds (≤5.3kg, regular roller blinds within 7 square meters): 1.2Nm EMLUX EM25-1.2/25 tubular motor

Medium roller blinds (10~40kg): 4.2~10Nm EMLUX EM35-4.2/17 tubular motor

Heavy roller blinds (>50kg): 15~30Nm EMLUX EM45-20/14 tubular motor

Speed (RPM)

Generally recommended: 12~28 rpm (taking into account both efficiency and stability).

Note: Simple summary to calculate motor torque should ≥ torque=fabric and button rails Weight(kg) ÷ tube radius diameter(dm)

3. Functional requirements
Basic functions: one-way rotation (ordinary roller blinds), two-way rotation (windproof roller blinds with reversing function).

Intelligent control:

Support remote control, Wi-Fi/Bluetooth connection (such as access to smart home systems).

Limit adjustment: mechanical limit (manual adjustment) or electronic limit (precise positioning).

Overload protection: prevent motor burnout.

4. Installation method
Built-in type: The motor is hidden in the roller shutter tube, which is beautiful and saves space. The tube diameter needs to be measured in advance.

External type: The motor is installed at one end of the roller shutter tube, which is easy to maintain and suitable for renovation projects.

5. Purchase process summary
Measure the roller shutter: weight, tube diameter, height.

Calculate torque: Select the appropriate range according to the formula.

Determine the function: whether intelligent control, mute, etc. are required.

Match installation: built-in or external, confirm the power access method.

Verify compatibility: Consult EMLUX whether it supports the existing roller shutter system.

Note: If the roller shutter area is large (such as more than 5㎡) or the material is special (such as metal windproof roller shutter), it is recommended to choose a motor with a torque redundancy of more than 20% and consult EMLUX.
 

Engineered for Your Next Project

Specify with confidence using our tools:
🔧 Wind Load Calculator: https://emluxi.com/collections/windproof-roller-blinds
📞 Consult us:

• Cindy Cao: +86 186 8845 5797 | cindy@ysemlux.com

• Caspar He: +86 139 2213 7729 | caspar@ysemlux.com

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