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Door Leaves

Door leaves support the safety and comfort of railway cars. Through lightweighting technology and highly advanced skills, we provide high-quality door products that are both safe and convenient to use.

Railway door leaves that meet the world's standards

Railway car doors are one of the most critical mechanisms that protect passenger safety and support smooth operations.
Narita Manufacturing has long manufactured doors for railway cars in Japan and overseas, honing its technology in a field that demands strict safety standards and high durability. The experience we have gained manufacturing door leaves has profoundly shaped our thinking on railway safety and reliability — the very foundation of our quality. We have refined a design philosophy that withstands high-frequency operation and harsh usage environments into Japan's meticulous manufacturing.
To meet the safety and quality standards that differ from country to country, we optimize everything from material selection to structure and manufacturing processes. With a production system capable of stably supplying railway door leaves compliant with global standards, we continue to support railway infrastructure worldwide.

Product Lineup

Diverse door products for every location of use, from passenger boarding doors to interior fittings

Side Sliding Doors

The main boarding doors of railway cars must be smoothly operable and highly durable. They are the core products supporting daily operations.

Key Features:
Lightweight | High durability | Aesthetics
Applications:
Limited express trains | Subways | Conventional lines

Side Plug Doors

These are a type of door that slides outward to open and close. Excellent airtightness and quietness make them ideal for limited express trains and Shinkansen.

Key Features:
High airtightness | Flush exterior | Outward sliding
Applications:
Limited express trains | High-speed rolling stock | Overseas rolling stock

End Sliding Doors

These lightweight doors are used to partition car interiors. They create comfortable interior spaces with their safety and maneuverability.

Key Features:
Lightweight design | Safety | Ease of operation | Interior partitioning
Applications:
Cabin partitions | Deck boundaries | Green cars (first class)

Rotating Doors

A structure that opens and closes easily even in limited spaces. Barrier-free versions are also available, with consideration for all passengers.

Key Features:
Space-saving | Barrier-free | Easy operation | Hygienic design
Applications:
Onboard toilets | Multipurpose rooms | Washrooms

Side Hinged Doors

Specially designed doors for driver's cabs and crew rooms ensure safety and sound insulation to provide the drivers and crews with an optimized workplace.

Key Features:
Dedicated design | Safety | Sound insulation | Emergency-ready
Applications:
Driver's cabs | Conductor rooms | Crew rooms

Manufacturing car parts for the NYC Subway

Supporting New York, one of the world's great cities

New York City Subway cars are built to be able to endure nearly 24-hour services in a harsh operation condition. Narita Manufacturing has been involved in manufacturing cars for the New York subway, practicing manufacturing that puts durability, safety, and maintainability first.

To withstand high-frequency boarding and large temperature swings, moving parts such as doors must meet some of the world's most rigorous quality standards. Narita Manufacturing has established the design and manufacturing technologies to meet these demands, stably supplying products compliant with global standards.

Optimal Specifications for Each Vehicle Environment

We optimize materials, structure, and sound insulation according to operating frequency and the environment the doors are used in. Based on aluminum alloy construction, we can create lightweight products with long service life.

  • Supports Many Door Designs

    Side sliding doors, side hinged doors, and various interior doors

  • A Variety of Surface Finishes

    Decorative panels, decorative sheet lamination, anodizing, stainless steel hairline finish, and painted finishes available

  • Strength (Safety)

    Strength verification through deflection testing are performed to ensure safety on crowded commuter trains

  • Lightweight, High Rigidity

    Sandwich panel construction enables high rigidity and weight reduction

  • Durability

    A mechanism that eliminates spring breakage in the drop-window units of side hinged doors

Performance Data

High performance indicators achieved through rigorous quality control, contributing to more efficient operations for railway operators.

  • Deflection Strength

    Our designs ensure both weight reduction and strength, maintaining quality that satisfies the specifications required of each door type.

  • Noise Level

    We aim to create a quiet and comfortable interior environment and help reduce passenger stress by suppressing external noise from coming in.

  • Service Temperature

    Stable operating performance across a wide temperature range, from −30°C to +60°C.

Thinking about introducing
Door Products?

Whether you are considering installation in new rolling stock or refurbishing existing cars, don't hesitate to consult us on technical specifications and customization.

Inquire about Door Products Download Technical Materials
PRODUCTS

Take a closer look at Narita Manufacturing's product lineup,
cultivated throughout our history since our founding in 1938.