Electric Curtain Motor Selection Guide: Achieving Silent and Smart Performance

Wide voltage range 5-24V design, precision speed adjustment 1000-8000 RPM, flexible installation diameter 24-42mm, torque 10-50mNm for effortless load handling, power consumption 1-30W for energy efficiency – the preferred solution for smart home motors

In today’s smart home landscape, the quality of electric curtain systems plays a crucial role in defining living comfort. An exceptional electric curtain motor must achieve perfect harmony between whisper-quiet operation, reliable load capacity, energy efficiency, and intelligent control capabilities. This comprehensive selection guide will help you navigate the technical specifications needed to develop competitive smart curtain products.

Understanding Critical Specifications for Precise Selection

1. Operating Voltage (5-24V) and Power Supply Options

Low Voltage Supply (5-12V): Perfectly suited for lithium battery-powered or safe low-voltage DC systems in smart curtain installations. This option provides enhanced safety during installation and proves ideal for retrofit applications in existing homes.

Standard Voltage (18-24V): Designed for integration with conventional household low-voltage wiring systems. This configuration minimizes line losses and works exceptionally well in commercial environments where multiple curtains require simultaneous control.

Selection Recommendation: Wide voltage design capability offers flexible power solution choices, seamlessly accommodating both wireless charging and wired connection configurations.

2. Rated Speed (1000-8000 RPM) and Operating Efficiency

Smooth Operation Speed (1000-2500 RPM): Delivers elegant, consistent opening and closing motion while eliminating abrupt starts and stops. This creates a peaceful indoor atmosphere, making it the preferred choice for residential applications.

High-Efficiency Speed (2500-5000 RPM): Meets demanding requirements for large floor-to-ceiling windows, hotel lobbies, and other scenarios requiring rapid light adjustment capabilities.

Selection Recommendation: Precision PWM speed control enables integration with smart home controllers, providing multi-stage speed adjustment for diverse application scenarios.

3. Outer Diameter (24-42mm) and Concealed Installation

Ultra-Slim Design (24-30mm): Easily integrates within tracks or curtain boxes, achieving an “invisible motor” aesthetic that preserves interior design integrity.

Standard Dimensions (32-42mm): Provides enhanced power foundation and thermal management for heavy curtains and dual-layer systems, ensuring sustained operational stability.

Selection Recommendation: Accurate measurement of installation space during the design phase is essential for achieving seamless concealed motor installation.

4. Output Torque (10-50mNm) and Curtain Load Capacity

Torque directly determines whether the motor can effectively move curtain weight. Standard torque (10-25mNm) handles typical fabric curtains, while high torque (30-50mNm) easily drives heavy velvet drapes, blackout curtains, or extra-long window treatments.

Selection Recommendation: Calculate required torque based on actual curtain weight and track friction coefficient. We recommend maintaining a safety margin exceeding 30% to ensure the motor operates comfortably throughout its service life, maximizing longevity.

Application Case Study: How the BM3640 Model Became a Smart Curtain Industry Leader

Client Requirements: A prominent smart home brand required a motor for their flagship electric curtain line with these specifications: operating noise below 25 decibels, lithium battery compatibility with minimal standby power consumption, and concealed installation within narrow track spaces.

Our Solution: We recommended the BM3640 ultra-quiet brushless motor model.

Performance Results: Stable operation at 9V low voltage, 1300 RPM speed ensuring smooth opening/closing motion, only 8W power consumption for ultimate energy efficiency.

Solution Advantages:

• Ultimate Silence: Electromagnetic optimization combined with precision manufacturing produces sound as gentle as a soft breeze, completely preserving indoor tranquility.
• High Efficiency: 8W low power consumption paired with ultra-low standby current mode extends lithium battery-powered curtain runtime by over 30%.
• Compact Power: Small diameter perfectly fits within tracks while optimized torque output easily drives typical household curtains weighing up to 3.5kg.

Three Steps to Selecting Your Optimal Motor

Step One: Evaluate Curtain Load and Usage Scenario

Confirm curtain type, weight, and operating frequency. Is this a lightweight residential curtain or a heavy-duty commercial installation? This directly determines torque and durability requirements.

Step Two: Determine Power Supply and Installation Method

Choose between lithium battery, solar panel, or direct wired power supply. Precisely measure installation space dimensional constraints to ensure perfect motor integration.

Step Three: Focus on Performance and Smart Experience

Prioritize noise levels and power consumption control as core evaluation criteria. Additionally, verify motor compatibility with mainstream smart home system controllers (such as Mi Home, HomeKit, etc.).

For clients requiring custom dimensions, specific interfaces, or proprietary control protocols, professional customization services are available, providing comprehensive solutions from hardware to software to meet product innovation needs.

Motor Characteristics: Low noise, high torque, high performance, long service life. Comprehensive motor evaluation and customization available based on customer performance requirements.

Manufacturing Capabilities: Lean production lines (automated and semi-automated), SMT placement lines, twelve standard series inner rotor brushless motors (diameter 20mm-120mm); ten standard series outer rotor brushless motors (diameter 30mm-100mm); plus customized series matching client specifications.