Floor Springs

Elwink’s Floor Springs deliver superior stability and precision control for heavy-duty door applications.

BTS-7541

The 1000 kg Heavy Duty Floor Spring from Elwink is engineered for demanding commercial door applications requiring exceptional load-bearing capacity and precision performance. Designed to support heavy glass, aluminum, steel, or timber doors up to 1000 kg, this floor spring combines rugged structural components with advanced hydraulic regulation to deliver smooth, controlled swing motion in both directions. Its precision-machined internal gearbox and high-strength materials ensure consistent closing and latching performance, even under frequent use, while integrated hydraulic valves allow accurate adjustment of closing, latching, and backcheck speeds to meet specific project demands. Concealed within the floor assembly for minimal visual impact, the system provides seamless architectural integration without compromising durability or operational stability.

Constructed to withstand intense traffic and environmental stress, the BTS-7541 floor spring features corrosion-resistant finishes and reinforced mechanisms that maintain performance across extended service life. Built in compliance with international performance standards, the unit ensures dependable operation in commercial, institutional, retail, and high-occupancy environments where reliability and safety are paramount. With versatile adjustability, robust engineering, and a design focused on strength and precision, this floor spring offers professional-grade motion control that enhances both user experience and architectural integrity.

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1000KG Floor Door Hinge

Model：BTS-7541
Max Door Weight：1000kg
EN7 force efficient closing door opening force small closing force large

The super heavy-duty electric floor spring is engineered for oversized and high-load door applications requiring exceptional structural strength and intelligent motion control. Designed to support doors weighing up to 1000 kg with widths up to 3000 mm, this system accommodates unlimited door height, making it suitable for monumental architectural entrances and large-scale commercial installations. It is compatible with heavy-duty framed doors, large metal doors, and reinforced glass assemblies, delivering stable bi-directional swing performance with precision-controlled opening and closing movement.

Equipped with a multifunctional control system featuring an integrated LED display, the unit enables convenient parameter configuration and real-time operational monitoring. The ultra-long-range remote control operates up to 200 meters (unobstructed) and supports APP-based control for enhanced flexibility and smart integration. Designed for concealed floor installation, the system maintains a clean architectural appearance while ensuring low-noise operation, corrosion resistance, and long-term durability in demanding environments.

BTS-750

The 360° Rotation Power-Adjustable Single-Cylinder Floor Spring from Elwink is engineered to deliver precise and reliable motion control for medium-weight doors in commercial and high-use environments. Designed to support door weights ranging from 60 kg to 150 kg, this floor spring offers full 360-degree rotation capability, allowing doors to swing freely in either direction while maintaining smooth, stable movement throughout the travel arc. Its adjustable hydraulic system provides fine tuning of closing, latching, and backcheck speeds, ensuring consistent performance, controlled swing motion, and secure final closure under varying usage conditions. Concealed within the floor assembly, the system provides a discreet installation that enhances architectural aesthetics without compromising functionality.

Constructed with high-quality materials and precision-machined internal mechanisms, this floor spring is built for durability and long-term performance in demanding settings such as offices, retail entrances, galleries, and institutional spaces. The power-adjustable feature enables installers to tailor the closing force to specific door sizes and site requirements, improving door operation and occupant safety. Designed for compatibility with a wide range of door types—including glass, aluminum, wood, and steel—this floor spring combines robust engineering with seamless architectural integration, offering dependable control and structural stability across everyday use.

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150KG Floor Door Hinge

Model：BTS-750
Max Door Weight：60-150kg
Max Door Width : 600-1100mm

The BTS-750 Floor Spring is a certified, high-performance door control solution engineered for demanding commercial environments. Designed for installation in commercial complexes, office buildings, hospitals, retail spaces, and other public facilities, it delivers stable and precise door movement across a wide range of door weights. Whether applied to lightweight interior doors or heavier entrance systems, the BTS-750 ensures controlled swing, secure latching, and long-term operational reliability—enhancing both safety and user convenience.

Certified to ANSI/BHMA A156.4 Grade 1, the BTS-750 meets one of the highest durability standards in the door hardware industry, confirming its suitability for high-frequency usage conditions. The unit features multi-point adjustability for closing speed and spring force, allowing accurate calibration to match specific door sizes and site requirements. Tested to withstand over 2,000,000 opening and closing cycles, the BTS-750 demonstrates exceptional endurance and mechanical stability, ensuring consistent hydraulic performance over extended service life. For projects requiring certified durability, precision control, and long-term dependability, the BTS-750 represents a reliable and professional-grade solution.

BTS-3000

The Heavy Machine 300 kg High-Quality Floor Spring from Elwink is engineered for robust performance in medium-to-high traffic environments where enhanced load-bearing capacity and precise motion control are essential. Designed to support doors up to 300 kg, this single-cylinder floor spring combines rugged structural components with precision hydraulic regulation to deliver smooth, balanced swing motion and reliable closing action. Its robust internal mechanism ensures consistent performance with minimal maintenance, providing controlled door movement and secure final closure whether installed in commercial entrances, institutional spaces, hospitality environments, or heavy-use interior applications. The concealed installation preserves architectural integrity while delivering dependable operational stability.

Manufactured with high-strength materials and precision machined elements, the unit is built for durability and long-term performance under frequent use. Adjustable hydraulic valves allow fine-tuning of closing, latching, and backcheck speeds to suit specific door sizes, weights, and site conditions, ensuring optimized performance across a variety of installation scenarios. Compatible with glass, aluminum, wood, and steel doors, this floor spring offers versatile application while maintaining smooth operation and structural reliability. With its combination of heavy-duty capacity, adjustable control, and engineered resilience, the Elwink 300 kg floor spring is a professional-grade solution for demanding architectural projects.

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300KG Floor Door Hinge

Model：BTS-3000
Max Door Weight：300kg
Max Door Width : 1400mm

The BTS-3000 Stainless Steel Single-Cylinder Floor Spring is engineered for maximum installation flexibility and high-cycle commercial performance. Its compact body design allows integration in locations where conventional floor closers cannot be accommodated, making it ideal for thin slab concrete substructures and constrained floor depths. Designed to adapt to diverse architectural conditions, the BTS-3000 is compatible with a wide range of interchangeable door spindles, enabling seamless installation across various floor finishes, thresholds, and pivot configurations. This adaptability ensures consistent alignment, smooth bi-directional swing, and precise hydraulic control across different project requirements.

Tested to exceed 2,000,000 operating cycles by Intertek, the BTS-3000 is certified to ANSI/BHMA A156.4 Grade 1, confirming its suitability for high-traffic and demanding commercial applications. Engineered in accordance with the proven German BTS 3000 design platform, the system supports door weights up to 300 kg while delivering stable closing performance and long-term durability. Suitable for glass, wooden, aluminum, and framed door systems, the BTS-3000 also offers an optional German-type spindle configuration for enhanced structural compatibility and performance optimization in specialized installations.