- ENGLISH
• Modular
• LoW-SKU
• Easy Assembly
• Stable Force
• Low-Noise Long Lifecycle
• Patent Protect
The DOSRON 38mm Cordless Manual Roller Blinds Spring Lift Mechanism is designed for effortless and quiet operation, perfect for bedroom installations. Featuring a constant-force spring and precision-engineered components, this mechanism provides smooth and stable lifting without cords, ensuring child safety and a cleaner look. Its whisper-quiet performance (below 40dB) and extended durability make it an ideal solution for modern homes and offices, with over 50,000 lift cycles tested for reliability.
Patented Rechargeable Motor System for Automated Roller Shades by DOSRON features a compact lithium-ion design, USB-C 5 V charging, and silent torque output for cordless automation. It offers precise electronic limit control, dual learning positions, and multi-channel RF synchronization for roller and zebra shades. With 2600 / 5200 mAh battery options, up to nine-month runtime, and built-in BMS protection, this system ensures stable, low-noise operation. Designed for professional installations, it supports solar charging, group control, and compliance with CPSC 16 CFR 1260. An ideal choice for energy-efficient, smart, and child-safe window automation projects.
Electric motorized cordless spring mechanism tubular motor for roller shades and blinds. Stable torque, ultra-quiet (<40 dB), Type-C rechargeable, and smart-home ready. OEM/ODM supply from DOSRON — reliable tubular motor producers in China.
Factory Price Cordless Custom Interior Aluminum Mini Blinds Spring Components System—spiral spring in POM with 301 SS delivers smooth, silent, child-safe lift for 25×25 mm headrails; OEM/ODM ready.
Dosron’s Customized Size PVC Venetian Spring Parts deliver cordless, low-noise lift for bedroom blinds using a spiral spring in POM housing with 301 stainless steel. Pre-tension is factory set by slat gauge and rail mass; installers can add pre-turns to achieve stable hover at mid-drop. The module fits 25×25 mm headrails and adapts to OEM rails via snap-in end caps. Friction-guided damping reduces rebound and chatter. Cycle life targets 10k+ operations. Specify the cordless pathway for CPSC 16 CFR 1260 and ANSI/WCMA A100.1 compliance. Ideal for customized bedroom widths and drops requiring clean façades, repeatable handling, and quick field balancing.
1. DRAPER, ALDI, Walmart, Target and National Geographic Supplier
2. CE, ROHS, ISO and other product certification
3. 3 years warranty, after-sales technical support
L2
100pcs
T/T, Credit Card, etc
China
Customized
Xiamen
30 days
Customized
The Modern Wholesale Bamboo Wood Roller Blinds Spring Kit Mechanism by DOSRON is a cordless, quiet, and durable lifting system designed for bamboo and wood roller blinds. It features a POM engineering housing, 301 stainless steel spiral spring, and calibrated torque to handle heavy natural fabrics smoothly. Compatible with 38 mm and 43 mm tubes, the system ensures stable balance, silent operation, and over 10,000-cycle lifespan. Ideal for OEM/ODM production, it supports easy installation, no lubrication, and compliance with CPSC 16 CFR 1260 child-safety standards—offering an efficient, modern solution for natural-material blinds.
1. DRAPER, ALDI, Walmart, Target and National Geographic Supplier
2. CE, ROHS, ISO and other product certification
3. 3 years warranty, after-sales technical support
Item No :
L22
Order(MOQ) :
100pcs
Payment :
T/T, Credit Card, etc
Product Origin :
China
Color :
Customized
Shipping Port :
Xiamen
Lead Time :
30 days
Weight :
Customized
The DOSRON Cordless Spring System is an in-headrail spring box for 2″ Faux Wood Venetian Blinds, combining a rigid POM housing with a 301 stainless-steel spiral spring to deliver smooth cordless lifting and stable hold at any height. Designed to fit common steel/aluminum headrails and support both ladder tape and cord ladder, it helps manufacturers upgrade to a clean, child-safer cordless façade without adding motors or electronics.
The DOSRON Spring Loaded blackout system is a cordless in-tube mechanism designed for cordless roller blinds in classrooms, training rooms, and lecture halls. Integrated inside a 32mm aluminum tube, it uses a constant-force spring to balance fabric weight, allowing for smooth operation without chains or hanging cords. Teachers and students can easily pull the bottom bar to adjust the blinds, ensuring privacy for exams and presentations. The system is engineered for durability, quiet operation, and consistent performance, making it a reliable solution for modern educational environments.
If you are interested in our solutions, please leave us a message. Let us provide a complete solution tailored to your specific situation.
No. This system is engineered for manual cordless zebra blinds. Hybrid motor-spring platforms use different control logic.
It depends on measured fabric + bottom rail weight and required drop. Use the selection table to choose model and quantity per Shaft.
Pre-winding stores initial energy so the system enters the intended force band immediately. The Pin locks the pre-tension state.
Not reliably. The Spring Box defines the force band; the Brake only governs motion within it. Correct selection comes first.
Yes, but only with proper load calculations to keep force distribution stable across the full travel.
Dosron designs high-performance spring systems and motors for cordless blinds.
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E-Mail: Aaron@dosroninc.com
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