Quick Summary

The DOSRON 38mm Quiet Smooth Cordless Spring Mechanism is engineered for office and commercial spaces demanding durability and silence. Made from high-strength aluminum with a precision-balanced spring mechanism, it delivers smooth lifting, stable torque, and low-noise performance — ensuring long-term reliability and a refined user experience.

Product Overview

Enhance your space with the DOSRON 38mm Quiet Smooth Cordless Spring Mechanism, designed for modern roller blind systems that prioritize safety, simplicity, and silence.
Its precision-engineered spring core ensures balanced torque and stable lifting, while the cordless structure complies with child safety standards and delivers effortless, quiet motion — ideal for both residential and commercial interiors.

Technical Specifications

Each model is calibrated for torque consistency and optimized for specific fabric weights and window dimensions. All 38mm spring systems are tested for over 10,000 lift cycles to ensure smooth performance, durability, and precision stability.

Key Advantages & Features

Stable Torque Performance

Consistent tension output across different models ensures smooth, balanced operation with no sudden rebound or drag.

Whisper-Quiet Design

Low-friction polymer bearings and vibration-dampened structure keep operation noise below 40dB — suitable for quiet office and home use.

Durable Construction

The 301 stainless steel spring and POM housing provide excellent wear resistance and dimensional stability, guaranteeing long-term reliability.

Easy Installation

Compact 38mm modular design fits multiple blind types and minimizes assembly time for OEM and installers.

Maintenance and Installation Guide

Precision Spring Core

The spiral spring is fine-tuned for constant torque, allowing the blind to stay at any height without slipping or bouncing.

Friction-Optimized Housing

Engineered POM polymer casing reduces resistance during rotation and protects internal components from dust and deformation.

Silent Braking Control

The self-balancing damping mechanism absorbs start/stop impacts to ensure gentle, smooth operation.

Aluminum End Caps

Lightweight but rigid, anodized aluminum caps enhance structure stability and ensure perfect fit with roller tubes.

Durability & Safety Protections

• Cycle Testing: Validated for over 10,000 operations under full load.
• Thermal Stability: Materials tested to maintain elasticity from 0–40°C.
• Safety Compliance: Cordless design conforms to CPSC 16 CFR 1260 and EN 13120 standards.
• Corrosion Resistance: All metallic parts pass salt-spray testing to ensure longevity.

Applications

• Roller Blinds
• Zebra / Sheer Blinds
• Honeycomb Blinds
• Roman / Shangri-La Shades
• Residential and Office Installations
• OEM / ODM Blind Systems

OEM & ODM Services

DOSRON provides full OEM/ODM support including:

• Private labeling and logo customization
• Custom torque range and spring ratio design
• Compatibility adjustments for various blind tubes
• Engineering training and technical documentation

Field Performance Feedback

In recent OEM applications, end-user satisfaction improved by 18% due to quieter operation and smoother lift motion. Installers noted faster setup times and reduced after-sales adjustments compared to traditional corded systems.

FAQ

Q1: What is the MOQ?
Minimum order quantity is 100 pcs for standard models. Samples available for testing.

Q2: What is the warranty period?
All DOSRON spring mechanisms include a 5-year warranty for non-human defects.

Q3: Do you offer customization?
Yes. We provide OEM/ODM services including torque tuning, branding, and structure redesign.

Q4: What’s the average delivery time?
Production lead time is typically 20–25 working days for orders under 1,000 units.

Q5: How do I choose the right model?
Send your tube size, fabric weight, and desired lifting strength, and our engineers will recommend the most suitable spring model.