ENGINEERING STRUCTURAL BREAKDOWN

Spring System Works in Real Operation
NOTE
  •  ANSI/WCMA A100.1(U.S. Window Covering Safety Standard)
  • CPSC 16 CFR 1260(U.S. Federal Mandatory Cordless Rule)
  • EN 13120(European Child Safety Standard for Window Coverings)
  • AS/NZS 60335.2.97(Australia & New Zealand Safety Standard for Motorized Blinds)

At DOSRON, our cordless systems are engineered to eliminate exposed cords and hazardous loops — reducing strangulation risks at the source. Every architecture is developed in alignment with key global child-safety standards:

  • ANSI/WCMA A100.1(U.S. Window Covering Safety Standard)
  • CPSC 16 CFR 1260(U.S. Federal Mandatory Cordless Rule)
  • EN 13120(European Child Safety Standard for Window Coverings)
  • AS/NZS 60335.2.97(Australia & New Zealand Safety Standard for Motorized Blinds)

Because protecting children is not a feature upgrade.It is the starting point of responsible engineering.

Type-C Durable Motorized China Roller Blinds Motor For Aluminium 38mm Tube

Quick Summary

The DOSRON 38mm Motorized Roller Blinds Motor delivers quiet performance, robust torque, and long-term reliability. Designed for aluminium 38 mm tubes, it features Type-C fast charging, IP20 protection, and 15 000 + cycle endurance — making it the durable choice for modern residential and light-commercial shading systems.

Product Overview

Type-C Durable Motorized China Roller Blinds Motor For Aluminium 38mm Tube | Dosron Type-C Durable Motorized China Roller Blinds Motor For Aluminium 38mm Tube | Dosron

The 38 mm Type-C Motorized Roller Blinds Motor from DOSRON is engineered for smooth, low-noise motion control and extended durability.
Built with reinforced aluminium housing and high-precision copper windings, it ensures stable torque output (0.7 N·m ± 3 %) and efficient energy use.
Its compact structure fits standard 38 mm aluminium roller tubes, making installation straightforward for OEM or retrofit systems.


Technical Specifications

Motor System Accessories Motor System Solutions
Item Property Name Parameter Description
1 Model DT25B2/28-38X Optimized for 38 mm aluminium roller tube
2 Rated Torque 0.7 N·m ± 3 % Stable performance for large shade systems
3 Rated Speed 28 rpm Balanced lifting motion for heavy fabrics
4 Battery Capacity 2600 / 5200 mAh Operates 6–9 months per charge
5 Charging Port Type-C USB Fast & reversible charging; supports solar input
6 Rated Power 5 W Energy-efficient motor system
7 Noise Level ≤ 40 dB Whisper-quiet operation
8 Protection Rating IP20 Indoor environmental protection
9 Operating Temperature 0 – 40 °C Stable across daily environments
10 Cycle Life 15 000 + operations Tested for long-term reliability

Key Advantages & Features

Durable Aluminium Structure

Reinforced aluminium shell with internal heat dissipation ensures structural rigidity and long-term durability in daily operation.

Consistent Torque Output

Precision gearbox maintains steady torque for even lifting motion, regardless of shade weight or fabric thickness.

Whisper-Quiet Engineering

Polymer-alloy gears and shock-absorbing mounts keep sound below 40 dB for peaceful indoor environments.

Type-C Fast Charging

Reversible Type-C port enables convenient charging via adapter, solar panel, or power bank; full recharge in 4 hours.

Smart Control Compatibility

Supports RF remote, push-to-start motion, and smart-home integration via Tuya / Zigbee / BLE / Wi-Fi protocols.


Precision Gearbox

High-strength polymer gears with micro-tolerance alignment reduce vibration and noise under high load.

Silent Brake Logic

Electromagnetic brake system ensures smooth start/stop control, protecting shade fabric from tension shock.

Copper Windings

High-purity copper coils enhance electrical efficiency and reduce internal temperature rise.

Aluminium Housing

Lightweight anodized structure provides corrosion resistance and excellent thermal management.


Cycle Testing: Verified for 15 000 + open/close operations.

  • Thermal Protection: Automatic cool-down restart after overheating.
  • Low-Battery Indicator: Red LED × 2 flashes = charge required.
  • Stall Protection: Auto torque cutoff during overload or obstruction.

RF & Cordless Operation

Up to 15 channels (1–15; “A” controls all). LED indicators:
Blue = operation, Red × 2 = low battery, Red/Blue × 3 = pairing success.

Smart-Home Ready

Compatible with Alexa, Google Home, and Apple HomeKit via Tuya or Zigbee gateway modules.


Applications

Type-C Durable Motorized China Roller Blinds Motor For Aluminium 38mm Tube | Dosron Type-C Durable Motorized China Roller Blinds Motor For Aluminium 38mm Tube | Dosron
  • Motorized Roller Blinds
  • Sheer / Zebra Shades
  • Honeycomb / Cellular Shades
  • Roman / Shangri-La Blinds
  • Residential Smart-Home Windows
  • Light-Commercial Building Automation

DOSRON offers full customization for 38 mm motorized shade systems, including:

  • Private labeling & branding support
  • Custom housing color or logo printing
  • Mechanical interface modification for tube sizes
  • Engineering support & installer training

In OEM projects across Europe and North America, failure rate dropped by 40 % and user satisfaction rose by 25 %.
Integrators highlight stable torque, quieter operation, and improved setup time with Type-C charging compatibility.


Field Insight: Durable Precision for 38 mm Aluminium Roller Blinds

The DOSRON 38 mm Motorized Roller Blinds Motor represents the evolution of smart window automation — combining mechanical durability, Type-C charging efficiency, and quiet engineering.
Each motor undergoes torque calibration and multi-stage reliability testing before delivery, ensuring consistent output for global OEM partners.

What Makes It Stand Out:
• Durable aluminium housing for 38 mm systems.
• Whisper-quiet operation below 40 dB.
• Type-C charging with solar compatibility.
• OEM/ODM solutions for smart-home projects worldwide.

Designed and manufactured in China by DOSRON, a professional motor manufacturer with 15 + years of engineering expertise.

FAQ

Capacity & Drop

R32 spring box Capacity & Drop

Spring Box PN.

Maximum Capacity /g

Support Maximum Drop /inch

Support Maximum Drop /cm

0.07*16*2000

   

0.08*16*2000

   

0.09*16*2000

   

0.10*16*2000

   

0.11*16*2000

   

 

R38 spring box Capacity & Drop

Spring Box PN.

Maximum Capacity /g

Support Maximum Drop /inch

Support Maximum Drop /cm

0.09*16*2000

   

0.10*16*2000

   

0.11*16*2000

   

0.12*16*2000

   

Why Us?

This will help you understand the differences between our products and those currently on the market.

Item

Electric tubular motors for cordless Spring Mechanism Roller BlindVSElectric tubular motors for cordless Spring Mechanism Roller BlindVSElectric tubular motors for cordless Spring Mechanism Roller Blind

Stablity

   

Force compensate

   

Assembly Safety

   

SKU

   

Lifecycle

   

Cost

   

Operation

   

Patents & Certifications

We design and manufacture cordless spring mechanisms and tubular motors for roller shades, honeycomb shades, zebrablinds, and venetian blinds,roman shades and more. Trusted by top international brands, DOSRON delivers scalableOEM/ODM solutions worldwide.

Get in touch

If you are interested in our solutions, please leave us a message. Let us provide a complete solution tailored to your specific situation.

Frequently Asked Question about Dosron

Q1: Is this Cordless Spring Drive suitable for motorized zebra blinds?

No. This system is engineered for manual cordless zebra blinds. Hybrid motor-spring platforms use different control logic.

Q2: How many Spring Boxes should I use?

It depends on measured fabric + bottom rail weight and required drop. Use the selection table to choose model and quantity per Shaft.

Q3: Why is pre-winding required before installation?

Pre-winding stores initial energy so the system enters the intended force band immediately. The Pin locks the pre-tension state.

Q4: Can a stronger Brake solve drift if the spring is mismatched?

Not reliably. The Spring Box defines the force band; the Brake only governs motion within it. Correct selection comes first.

Q5: Can different Spring Box models be mixed on one Shaft?

Yes, but only with proper load calculations to keep force distribution stable across the full travel.

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