NITTO KOHKI CO., LTD. List of Products and Services

This catalog features the door closer "AUTO-HINGE." It includes the "Center Hang Type" concealed door hinge with a self-closing function, the "Flag Type" hinge with a built-in door closer function, and the "Sliding Closer," which offers quiet, smooth opening and closing and excellent installation properties, all designed to achieve a sleek, arm-free door. *For more details, please refer to the PDF document or feel free to contact us.

"The 'Jamb Mount Receptive Base LH Series' is an effective base for installing center hang type doors at sites where floor processing, such as OA floors, is not possible. It significantly reduces the change in closing speed due to ambient temperature variations and ensures safety during closure. It is compatible with the fire door auto-hinges 'AFD-22-M' and 'AFD-22-B.' [Listed Products] ■ 'Jamb Mount Receptive Base LH Series' (3 types) ■ 'Double Shaft Top Pivot NKOS Pivot' *For more details, please refer to the PDF document or feel free to contact us.

"Smokecon" is a fire protection and smoke exhaust system developed from years of experience. Please utilize the versatile "Smokecon" for your fire protection and smoke exhaust equipment planning. [Content Included] - System structure diagram - Self-closing device Electromagnetic release latch type (Model N-78B) Electromagnetic release built-in upper frame type (Model N-64D) Electromagnetic release with exposed frame type (Model N-70A) Electromagnetic release floor-mounted type (Model N-73A) Electromagnetic release for sliding doors (Model N-78CN) Limit switch (Model N-81A/N-82A/N-83A) - Air supply outlet *For more details, please refer to the PDF document or feel free to contact us.

This catalog features options for sliding door closers. Featured options: - Free Stop Device This option allows the door to stop and hold at any desired position. To release the hold, lightly pull the door to the closing direction so the door will automatically close. - Close Assist Device This option catches the door at 25 mm from the fully-closed position and draws the door to close firmly. Useful for situations when the door's electric lock has a tight latch or airtight sealant is causing friction when the door is being closed. - Delayed Action Device The timing of the door closing from the fully open position can be delayed, allowing the elderly, persons with disabilities or people carrying cargo to pass through the door safely. - Back Check Device This option eliminates the noise, shock and vibration of the door opening suddenly.

Sliding door closers that open easily with minimal force and close quietly and securely at the desired closing speed. In the event of a fire, the CF series features double rail systems that provide additional support for the door. *When using this product as a fire door, please check the fire safety standards or fire protection regulations applicable in the region where this product will be used. *For more details, please refer to the PDF catalog or feel free to contact us.

The door closer is a product that allows doors to close quietly and safely. It is used in various types of doors around the world, including those in medical facilities, offices, and transportation systems. Utilizing spring or hydraulic mechanisms, it automatically closes doors without the need for external arms, resulting in a neat look. This catalog features the AUTO-HINGE Center Hang Type, which is fully built into the door, leaving no visible components on the exterior. Features: - Concealed type (door built-in type) - A wide variety of models to suit various applications - Suitable for fire doors, smoke ventilation systems, frequently used doors, and air intake doors - Easy installation with the Slide Receptive Base For more details, please refer to the PDF catalog or feel free to contact us.

The door closer is a product that allows doors to close quietly and safely. It is used in various types of doors around the world, including those in medical facilities, offices, and transportation systems. Utilizing spring or hydraulic mechanisms, it automatically closes doors without the need for external arms, resulting in a neat look. This catalog features the AUTO-HINGE Flag type, a hinge with a built-in door closer function. It offers an aesthetic appearance while being suitable for various swing doors. Features: - Wide range of applications (usable on arched doors or doors without upper frames) - Built-in stop mechanism to hold the door open (available only in models with “S” in their model number) - Easy adjustment of closing speed with a screwdriver - Simple installation (same method as standard hinges) For more details, please refer to the PDF catalog or feel free to contact us.

The door closer is a product that allows doors to close quietly and safely. It is used in various types of doors around the world, including those in medical facilities, offices, and transportation systems. Utilizing spring or hydraulic mechanisms, it automatically closes doors without the need for external arms, resulting in a neat look. This catalog features high-performance sliding door closer with excellent workability that opens and closes quietly with ease. Features: - Opens easily with minimal force - Small, lightweight, long life - The reinforced resin door roller and aluminum rails allow very quiet opening and closing - Easy and quick installation For more details, please refer to the PDF catalog or feel free to contact us.

The AUTO-HINGE Flag Type is a hinge with a built-in door closing function. Its clean and simple design complements various types of doors, enhancing both appearance and performance. This catalog features hinges specifically designed for lightweight interior doors. Featured products: 1. 300 Series 2. 1000 Series 3. 2000 Series For more details, please refer to the PDF catalog or feel free to contact us.

The AUTO-HINGE Flag Type is a hinge with a built-in door closing function. Its clean and simple design complements various types of doors, enhancing both appearance and performance. This catalog features hinges specifically designed for heavy interior doors. Featured products: 1. 100 Series 2. 200 Series For more details, please refer to the PDF catalog or feel free to contact us.

The AUTO-HINGE Flag Type is a hinge with a built-in door closing function. Its clean and simple design complements various types of doors, enhancing both appearance and performance. This catalog features hinges specifically designed for exterior doors. The 700 series utilizes a special sealing structure and stainless steel components, making it suitable for use in environments such as bathrooms and coastal areas. Featured products: 1. 700 Series 2. 1000PC Series 3. 2000PC Series For more details, please refer to the PDF catalog or feel free to contact us.

The AUTO-HINGE Center Hang Type is a concealed door hinge with self-closing function. Its excellent performance and durability make it suitable for swing doors and fire doors. This catalog features the AFD Series, which enhances safety as a door-closing device by minimizing changes in closing time, even under fluctuating ambient temperatures. Featured products: AFD-8KH to AFD-22 + NKOS-M18 Type AFD-30 to AFD-35A + NKOS-M20 Type For more details, please refer to the PDF catalog or feel free to contact us.

Sliding door closer is a closer that opens easily with minimal force and close quietly and securely at the desired closing speed. NSC-CB series features stainless steel materials and secure seal structure, ensuring long-term stable use even in high-humidity environments such as bathrooms. Featured products (Made to order products): ■NSC-CB88 for bathrooms/for steel doors ■NSC-CBA88 for bathrooms/applicable to aluminium door sash for automatic doors (built-in type) *For more details, please refer to the PDF catalog or feel free to contact us.

Single-action double-sliding system (model: SC-2SA) allows two sliding doors to open and close in conjunction by combining with our standard sliding door closers. Installation time is reduced by approximately 20% compared to our conventional model. Specifications (Base model: NSC-C48/NSC-C88*1) - Max. width of effective opening: 800 to 1500 mm - Applicable door weight [Total of two doors]: 80 kg (160 kg*2) - Applicable door thickness: 30 to 45 mm - Minimam in-frame dimensions H: 220 mm D: 100 mm*3 *1: Made to order product *2: Can support up to 160 kg by using 2 sets of the Door Closer standard set model. *3: When door thickness is 30 mm and space between doors is 10 mm. *For more details, please refer to the PDF catalog or feel free to contact us.

AUTO-HINGE Flag Type 100 / 200 Series Empty Hinges are hinges without a closing function. Use the Empty Hinge on the sub door when you want to match the design with the hinges with the closing function installed on the master door. The ball bearing structure enhances durability. If a closing function is required, use the Spring Hinge and Damper Hinge of the same model. For more details, please refer to the PDF catalog or feel free to contact us.

AUTO-HINGE Flag Type Black / Matte Black is a black-colored hinge model. It pairs naturally with dark-colored doors such as black. Additionally, a sophisticated and timeless design can be achieved by intentionally combining different hinge and door colors, such as matte black hinges with light-colored doors. Two finishes are available to suit different door materials: Black (gloss finish) – Coming soon Matte Black (non-gloss finish)

The "Sliding Closer CWV Series" is a closer specifically designed for sliding doors that opens easily with minimal force and closes quietly and reliably at your preferred speed. In this model change, we have adopted an inclination adjustment mechanism. We offer a set suitable for wooden and steel doors at a low cost. Additionally, it features easy operation that allows for ambidextrous use. *Please note that the catalog only lists the wooden door version, but we also have a version available for steel doors. For more details, please feel free to contact us.