描述
The BM-KD.300 Floor Spring Series is a professional ultra heavy-duty concealed hydraulic floor spring designed for large commercial door systems and high-traffic architectural applications. Engineered with advanced hydraulic technology, reinforced structural components, and precision manufacturing standards, the BM-KD.300 delivers powerful load-bearing performance, smooth door control, and exceptional operational stability.
Specially developed for oversized glass doors and heavy entrance systems, this model is ideal for frameless glass doors, tempered glass doors, aluminum frame doors, steel doors, and wooden swing doors used in demanding commercial environments.
The concealed floor-mounted structure provides a modern and elegant appearance while maintaining strong hydraulic performance for continuous daily operation. With excellent durability and reliable functionality, the BM-KD.300 is widely used in shopping malls, airports, hotels, office buildings, hospitals, banks, exhibition halls, luxury retail stores, and premium architectural projects worldwide.
Designed specifically for international markets, the BM-KD.300 combines export-grade quality, long service life, and cost-effective commercial performance, making it an ideal solution for distributors, wholesalers, engineering contractors, and construction hardware suppliers.
Main Product Features
1. Ultra Heavy-Duty Hydraulic Performance
The BM-KD.300 is specially engineered for large and heavy door applications requiring powerful hydraulic support and stable movement control.
Technical Specifications:
- Suitable Maximum Door Width: ≤2400mm
- Maximum Bearing Weight: 100kg
- Opening Angle: 90°–135°
- Product Length: 258mm
- Product Width: 125mm
- Product Height: 49mm
Its reinforced hydraulic system ensures smooth and controlled operation even under high-frequency commercial usage conditions.
The BM-KD.300 is particularly suitable for:
- Large frameless glass doors
- Commercial entrance systems
- Oversized swing doors
- Public building access systems
- Heavy architectural glass applications
2. Concealed Floor Mounted Structure
The floor spring is installed beneath the floor surface, allowing the hydraulic mechanism to remain completely hidden after installation.
Concealed Design Advantages:
- Clean and modern appearance
- Elegant architectural integration
- Improved visual aesthetics
- Space-saving structure
- Professional commercial presentation
Compared with visible overhead door closers, concealed floor springs provide a more premium and sophisticated entrance solution.
This hidden installation design is widely preferred in:
- Luxury commercial buildings
- Hotels and resorts
- Shopping centers
- Corporate offices
- Modern residential villas
- High-end retail stores
3. Precision Hydraulic Control System
The BM-KD.300 adopts advanced hydraulic damping technology to ensure stable, smooth, and safe door operation.
Hydraulic System Benefits:
- Smooth opening movement
- Controlled closing speed
- Soft latching action
- Reduced impact force
- Improved operational stability
- Enhanced user safety
The precision hydraulic mechanism helps prevent sudden slamming and excessive door impact, extending the service life of both the floor spring and door hardware system.
4. Smooth and Silent Operation
The hydraulic damping structure minimizes operational noise during door movement.
Silent Operation Benefits:
- Improved customer experience
- Comfortable indoor environment
- Reduced vibration
- Lower mechanical stress
- Professional commercial atmosphere
This quiet operation makes the BM-KD.300 especially suitable for:
- Hotels
- Hospitals
- Office buildings
- Conference centers
- Luxury retail stores
- Residential apartments
- Libraries
- Showrooms
5. Adjustable Closing and Latching Speed
The BM-KD.300 supports adjustable hydraulic settings, allowing installers to customize door movement according to project requirements.
Adjustable Functions:
- Closing speed adjustment
- Latching speed adjustment
- Door return control
- Opening resistance adjustment
This flexibility allows the product to adapt to:
- Different door sizes
- Various environmental conditions
- Traffic volume requirements
- Safety standards
- Installation configurations
6. High-Strength Material Construction
The BM-KD.300 is manufactured using premium-grade steel and high-strength alloy materials.
Material Advantages:
- Excellent load-bearing capability
- Strong structural stability
- Corrosion resistance
- Wear resistance
- Long operational lifespan
- Stable hydraulic performance
The external body surface receives anti-corrosion treatment to improve durability in humid and demanding commercial environments.
7. Long Service Life
The BM-KD.300 is developed for intensive commercial operation and long-term durability.
Each unit undergoes comprehensive quality testing before shipment.
Testing Procedures Include:
- Hydraulic pressure testing
- Leakage inspection
- Opening and closing cycle testing
- Mechanical stability testing
- Load-bearing inspection
- Surface quality inspection
- Dimensional accuracy testing
Strict quality management ensures consistent performance and long-term reliability.
Product Specifications
| Item | Specification |
|---|---|
| Product Name | Floor Spring |
| Model | BM-KD.300 |
| Type | Concealed Hydraulic Floor Spring |
| Material | High-strength Steel + Alloy |
| Maximum Door Width | ≤2400mm |
| Maximum Door Weight | 100kg |
| Opening Angle | 90°–135° |
| Product Length | 258mm |
| Product Width | 125mm |
| Product Height | 49mm |
| Installation Type | Concealed Floor Mounted |
| Suitable Door Types | Glass / Aluminum / Wooden / Steel Doors |
| Surface Finish | Black |
| Application | Commercial & Residential |
| OEM Service | Available |
| ODM Service | Available |
Product Advantages
Modern Architectural Appearance
The concealed installation design enhances the overall appearance of entrance systems and supports modern minimalist architectural styles.
Stable Hydraulic Performance
Precision hydraulic technology ensures smooth, controlled, and reliable door operation.
Heavy-Duty Commercial Durability
Designed for continuous operation in busy commercial and public environments.
Reduced Maintenance Costs
High-quality internal components reduce maintenance frequency and replacement expenses.
Enhanced Safety
The soft-closing hydraulic system minimizes sudden door impact and improves operational safety.
Wide Application Compatibility
Suitable for various frameless glass door systems and commercial entrance solutions.
Application Areas
The BM-KD.300 Floor Spring Series is widely used in commercial and residential architectural projects worldwide.
Shopping Malls
Designed for large entrance doors and heavy pedestrian traffic environments.
Office Buildings
Provides stable and professional door control for corporate entrances.
Hotels and Resorts
Ensures smooth and silent operation suitable for luxury hospitality applications.
Airports and Transportation Facilities
Heavy-duty performance supports continuous public usage.
Hospitals and Healthcare Facilities
Silent operation improves environmental comfort and reduces noise disturbance.
Exhibition Centers
Suitable for oversized glass entrance systems and public access doors.
Banks and Financial Institutions
Provides secure and reliable commercial entrance solutions.
Luxury Retail Stores
Improves storefront appearance while maintaining smooth customer access.
Residential Villas and Apartments
Ideal for premium residential entrance systems.
Manufacturing Process
We implement strict production management and export-grade quality control standards throughout the manufacturing process.
Production Procedures:
- Raw material inspection
- Precision CNC machining
- Hydraulic system assembly
- Surface treatment
- Product calibration
- Functional testing
- Durability testing
- Final quality inspection
- Export packaging
Every production stage is carefully controlled to guarantee stable product quality and long-term operational performance.
OEM & ODM Services
We provide professional OEM and ODM services for international distributors, engineering projects, and architectural hardware brands.
OEM Services Include:
- Customized logo engraving
- Customized product labels
- Customized packaging design
- Brand-exclusive manufacturing
- User manual customization
ODM Services Include:
- Product structure optimization
- Customized dimensions
- New product development
- Surface finish customization
- Technical engineering support
Our experienced engineering team can provide customized solutions according to customer requirements and local market demands.
Export Services
As a professional export-oriented manufacturer, we provide comprehensive international trade services and logistics support.
Our Export Services Include:
1. Professional Export Packaging
All products are packed according to reinforced export standards to ensure transportation safety during international shipment.
2. International Logistics Support
We assist customers with:
- Sea freight arrangement
- Air freight arrangement
- Full container loading
- Consolidated shipments
- Port delivery coordination
3. Export Documentation
Complete export documentation support including:
- Commercial Invoice
- Packing List
- Bill of Lading
- Certificate of Origin
- Inspection certificates
4. Quality Inspection Support
Strict pre-shipment inspection ensures stable and reliable product quality.
5. Technical Assistance
Professional technical consultation before and after shipment.
6. Fast Delivery Service
Stable production capacity ensures timely order fulfillment and shipment schedules.
Packaging Details
To ensure safe international transportation, all BM-KD.300 floor springs are packed using professional export packaging solutions.
Standard Packaging Includes:
- Individual inner box
- Foam protective materials
- Reinforced export carton
- Pallet packaging available upon request
Customized packaging solutions are available according to customer branding requirements.
Minimum Order Quantity (MOQ)
MOQ: 200 Pieces
We mainly cooperate with:
- Architectural hardware distributors
- Importers and wholesalers
- Engineering contractors
- Construction suppliers
- Glass hardware companies
- Building material distributors
For bulk orders and long-term cooperation, we provide competitive factory pricing and customized business solutions.
Quality Assurance
Our company strictly follows international quality management standards to ensure every product meets export-grade requirements.
Each BM-KD.300 floor spring undergoes:
- Hydraulic leakage testing
- Opening and closing cycle testing
- Pressure resistance testing
- Surface quality inspection
- Mechanical stability testing
- Final assembly inspection
We are committed to supplying durable, reliable, and high-performance architectural hardware products to customers worldwide.
Why Choose Us
Professional Manufacturing Experience
Years of expertise in floor spring and architectural hardware manufacturing.
Stable Product Quality
Strict quality management ensures reliable and consistent performance.
Competitive Factory Pricing
Direct manufacturer supply with export-oriented price advantages.
Rich Export Experience
Experienced in serving overseas distributors and international engineering projects.
Fast Customer Response
Professional international sales team provides efficient communication and technical support.
Long-Term Cooperation Support
We focus on building stable and mutually beneficial business partnerships worldwide.
Cooperation Process
- Customer inquiry
- Product specification confirmation
- Quotation and negotiation
- Sample arrangement
- Order confirmation
- Mass production
- Quality inspection
- Shipment arrangement
- After-sales service
After-Sales Service
Customer satisfaction is our long-term business priority.
We provide:
- Technical consultation
- Installation guidance
- Product usage support
- Quality issue assistance
- Long-term cooperation support
Our professional service team is ready to provide timely and efficient assistance for international customers.
Conclusion
The BM-KD.300 Ultra Heavy-Duty Floor Spring is a professional concealed hydraulic door control solution designed for large commercial entrance systems and modern architectural projects. Combining powerful hydraulic performance, elegant concealed installation, smooth operation, heavy-duty durability, and long service life, it is an ideal choice for global commercial and residential applications.
Supported by professional manufacturing capability, strict quality control, comprehensive OEM/ODM services, and complete export support, we are committed to delivering high-quality architectural hardware solutions for customers worldwide.
We sincerely welcome distributors, importers, wholesalers, engineering contractors, and project suppliers worldwide to establish long-term business cooperation with us.
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