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.

Quick Summary

The 38mm Spring Motor Roller Blinds Control System brings smooth, quiet, and cordless operation to modern interiors. Engineered by DOSRON, the spring-assist core balances fabric weight for effortless lifting while a compact motor enables precise control and scenes. Using POM engineering plastic housings and a 301 stainless-steel spring, the system delivers durable, elegant performance for homes and commercial spaces.

Overview of the 38mm Spring Motor Roller Blinds Control System

38mm Spring Motor Module for Roller Blinds Cordless bottom rail interface for roller blinds

Redefining the Core of Modern Roller Blind Systems

Every refined roller blind relies on a precise spring mechanism to stabilize torque and a low-noise drive to position the shade. DOSRON’s 38mm Spring Motor Roller Blinds Control System is purpose-built for roller blinds, zebra blinds, and other cordless window coverings.
The architecture removes dangling chains, replacing them with an internal spring torque system that holds at any height. The result is smooth, silent movement, enhanced user safety, and long service life—delivered in a compact, modular platform ready for OEM/ODM customization.

Application Scenarios for the 38mm Spring Motor System

The DOSRON 38mm Spring Motor Roller Blinds Control System is widely adopted across residential and commercial interiors where aesthetics, comfort, and safety matter.

Roller blind in bedroom using 38mm spring motor system Roller blind in meeting room using 38mm spring motor system

Option 1: Home Applications

  • Bedrooms & Living Rooms: blackout or light-filtering fabrics with quiet, child-safe cordless design.
  • Kitchens & Bathrooms: POM + stainless-steel components resist humidity and daily cleaning.

Option 2: Office & Commercial Environments

  • Meeting Rooms: silent lift avoids distraction during calls and presentations.
  • Hotels & Public Facilities: consistent alignment, durable cycles, and easy maintenance.

Maintenance and Installation Guide

Installation

  1. Insert the 38mm spring motor module into the roller blind tube/headrail.
  2. Align and lock adapters in the headrail; verify bracket coaxiality.
  3. Set pre-tension so the shade holds at mid-drop; pair with the cordless bottom rail.
  4. Complete assembly and test up/stop/down to confirm smooth, quiet motion.

Maintenance Tips

  • Avoid corrosive environments; wipe guides and seals periodically.
  • Recheck pre-tension if fabric or bottom-rail mass changes.
  • No lubrication needed—POM surfaces are self-lubricating.
  • Use original DOSRON parts for peak performance and safety compliance.

 

Technical Specifications of DOSRON 38mm System

Roller & Zebra Blind Reference (38 mm Platform)
Part No Tube Size /mm Fabric Width /mm Developed Length /mm Hold-at-Position Top Max Capacity/g Bottom Rail Non-rebound/g
R38-A1 38 900 2300 Yes 800–830 60–70
R38-A2 38 1100 2300 Yes 950–980 80–100
R38-A3 38 1200 2300 Yes 1150–1180 130–150
R38-A4 38 1300 2300 Yes 1300–1330 180–200

Engineering Principle Behind the Spring Motor System

38mm spring box and adapters Cordless bottom rail detail

How the 38mm Spring Motor System Works

The spring mechanism stores and releases energy through a stainless-steel spiral spring, offsetting fabric mass for balanced motion.
Unlike purely torsion-driven designs, DOSRON’s guided spiral delivers linear torque and stable hover at any height. The POM housing reduces friction and vibration, enabling a true cordless experience—and when paired with a compact motor, you get precise, quiet automation without heavy power draw.

Advantages of the Cordless Spring-Assist Architecture

  • Energy-light: smaller motors, longer battery life, lower standby.
  • Cycle stability: torque consistency over 10,000+ operations.
  • Low maintenance: self-lubricating POM—no routine oiling.
  • Wide adaptability: works with roller and zebra headrails.

OEM / ODM Integration

DOSRON supports global brands with spring-tension calibration, headrail interface adaptation, modular tooling, and ISO-controlled mass production. Torque range, spring thickness, and rail geometry can be tuned to your fabric and process.

Key Benefits of DOSRON 38mm Spring Motor System

Improved Safety

The cordless design removes chains/cords, addressing child-safety requirements in major markets.

Cost Efficiency

Spring-assist reduces motor size and wiring complexity—cutting build cost while improving reliability.

Simplified Assembly

The modular 38 mm platform drops into standard tubes; installers finish setup in minutes.

Longevity and Reliability

All components undergo torque endurance and aging tests under ISO 9001; the stainless spring resists fatigue for long-term stability.

Product Testing & Quality Control

Lifecycle Testing

Each system is tested for over 10,000 lift/lower cycles; torque remains within ±5% for consistent hover.

Material Verification

  • POM: tensile/impact performance verified for headrail stability.
  • 301 stainless spring: corrosion resistance and elastic retention validated for extended use.

International Certification

DOSRON’s production complies with:

  • GB/T 19001-2016 / ISO 9001:2015
  • GB/T 24001-2016 / ISO 14001:2015
  • ANSI/WCMA A100.1 child-safety guidance (cordless design)

Why Choose DOSRON 38mm Spring Motor System

Modern roller blind product shot 38mm headrail and bracket detail

Core Advantages of the Cordless Design

1. Cordless & Child-Safe Operation

Eliminates chains and loops, mitigating entanglement risk and aligning with U.S./EU child-safety expectations.

2. Smooth & Silent Performance

Optimized spring-torque control + guided friction keep sound levels low—ideal for bedrooms and meeting rooms.

3. Long Life Cycle & Stable Torque

301 stainless spiral maintains torque within ±5% across years of use, ensuring reliable hover and clean stops.

4. Precision Materials

  • POM engineering plastic housing for dimensional stability and low friction.
  • 301 stainless steel spring for corrosion resistance and elastic retention.

5. Customization Flexibility

Tailor spring tension, interfaces, and rails for different fabrics, widths, and regional specs.

Field Insight

Why the DOSRON 38mm Spring Motor Roller Blinds Control System leads:

  • Cordless child-safe design for modern interiors.
  • POM + 301 stainless construction for long-term reliability.
  • Quiet, premium motion suited to high-end spaces.
  • 10,000+ life-cycle verification with tight torque control.
  • OEM/ODM customization at scale.
  • Energy-light, maintenance-light architecture.
  • ISO-based quality with environmental compliance.

Whether you’re a manufacturer, distributor, or systems integrator, DOSRON’s 38mm platform delivers performance, safety, and lasting value.

FAQ — Everything About the 38mm System

Q1: Can this system fit most roller or zebra blinds?
Yes. The 38mm platform supports standard tubes and adapters; special interfaces can be customized.

Q2: What is the expected service life?
Validated for 10,000+ operations with stable torque output under normal use.

Q3: Is it suitable for commercial projects?
Absolutely. Offices and hospitality spaces benefit from quiet, low-maintenance performance.

Q4: What differentiates DOSRON’s solution?
Precision materials, ISO-controlled torque testing, and tuned spring-motor synergy for quieter motion.

Q5: How does it improve child safety?
The cordless architecture removes hanging chains entirely, reducing entanglement risks in family spaces.
“`

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.

Leave Your Message

We will be in contact with you within 24 hours.