NABCO GT-8300 automatic swing door with the Japanese Balance door frame system
- Brand

- TypeAutomatic swing door
The NABCO GT-8300 automatic swing door integrates the Japanese Balance door frame system, providing opening force assistance that supports door leaf heights of up to 4 meters
Overview of the NABCO GT-8300 automatic swing door
The NABCO GT-8300 automatic swing door is an Overhead Concealed operator developed for automatic swing door systems requiring high door leaf capacities and tall door configurations. The operator features a concealed installation inside the overhead header, making it an ideal solution for projects that require both architectural aesthetics and reliable long-term performance.
Key features of the NABCO GT-8300
Overhead Concealed operator design
The NABCO GT-8300 utilizes an Overhead Concealed operator installed within the overhead door structure, providing a clean architectural appearance while maintaining seamless integration with modern building designs.
Balance door frame system for opening force assistance
One of the key advantages of the NABCO GT-8300 is its ability to integrate with the Japanese Balance door frame system, which provides opening force assistance for large automatic swing doors. This solution allows door systems with heights of up to 4 meters while maintaining smooth, stable, and reliable operation. It is particularly suitable for buildings with large façades or entrances requiring wide openings.
The Balance system helps distribute the door load and reduces stress on the operator mechanism when handling oversized door leaves. In the Pro version, the system provides up to 50% opening force assistance, ensuring stable operation even with exceptionally tall and heavy door designs.
Intelligent microprocessor controller
The automatic door system is equipped with a microprocessor controller that enables:
- Precise acceleration and deceleration control during opening and closing
- Automatic operating force adjustment based on door leaf weight
- Reduced vibration and mechanical noise
- Optimized operating cycles according to traffic frequency
- High-performance motor
NABCO automatic door systems are engineered for reliable long-term operation in facilities with high traffic volumes, including hospitals, shopping malls, and airports.
Integrated safety systems
The system can be integrated with:
- Safety sensors
- Access control systems
- Fire alarm systems
- Customized configurations for areas requiring enhanced access control
Typical applications of the NABCO GT-8300 automatic swing door
With its ability to operate large automatic swing door systems and its aesthetically pleasing Overhead Concealed design, the NABCO GT-8300 is suitable for a wide range of applications, including:
- Luxury hotels and resorts
- Shopping malls
- Office buildings
- Hospitals
- Showrooms
- Airports and modern public facilities
The solution is particularly well suited to buildings that require large entrance façades, open architectural spaces, and high pedestrian traffic.
Contact us for consultation and quotation
Sonha Auto supplies complete NABCO automatic door solutions for projects throughout Vietnam, including technical consultation, system design, installation, commissioning, and maintenance services.
📞 Hotline: 093 645 6008
📧 Email: sales@sonha.com
🌐 Website: https://sonha.com

| Specification | GT-8300 Double swing | GT-8300 Single swing |
|---|---|---|
| Door configuration | Double swing door (two symmetrical door leaves, each opening 90°) | Single swing door (90° opening) |
| Standard door leaf capacity (kg × number of leaves) | 150 × 2 | 150 × 1 |
| Heavy-Duty door leaf capacity (kg × number of leaves) | (151 ~ 250) × 2 | (151 ~ 250) × 1 |
| Maximum applicable door weight (kg × number of leaves) | 1,841 kg trở lên | 1171 kg trở lên |
| Operator length – External transformer controller (mm) | 1637 ~ 1840 | 966 ~ 1170 |
| Operator length – External transformer and controller (mm) | 1359 ~ 1636 | 701 ~ 965 |
| Maximum door leaf area (W × H) (m²) | MAX 4.5 | MAX 4.5 |
| Door thickness (DT) (mm) | 44 | 44 |
| Operation during power failure | Manual opening – Automatic closing | Manual opening – Automatic closing |
| Operator dimensions | W940 × H152 × D148 | W940 × H152 × D148 |
| Surface finish | Silver | Silver |
| Typical opening/closing speed | Approximately 35°/second | Approximately 35°/second |
| Power supply | AC 220V · 5A | AC 220V · 2.5A |




