A Mortise Lock is one of the most durable and secure locking mechanisms used in doors for residential, commercial, and industrial applications. Unlike surface-mounted locks that attach to the outside of a door, a mortise lock is installed within a precisely cut pocket — or “mortise” — inside the door edge. This design not only enhances security but also maintains a clean and sophisticated appearance. The lock body, latch, and bolt are concealed within the door, leaving only the handle and faceplate visible.
Our mortise locks are engineered with precision, using materials such as stainless steel, brass, and zinc alloy. Each component, from the bolt to the front plate, is designed to provide superior strength and reliability. With customizable sizes, finishes, and configurations, mortise locks are the ideal solution for projects that require both aesthetics and safety.
A mortise lock consists of several components that work together to secure a door while providing smooth operation. The key parts include:
Lock Body (Shell): The main housing installed inside the door cavity, made from strong steel or electrolytic steel for structural stability.
Bolt: The solid metal piece that extends into the door frame to secure the door. Materials like SS201, SS304, brass, or zinc alloy ensure durability.
Latch: The spring-loaded mechanism that holds the door closed without locking it.
Front Plate: The visible metal plate on the door edge, available in round head or square head shapes, with finishes such as SSS (Satin Stainless Steel) or PSS (Polished Stainless Steel).
Follower: An 8mm spindle hole that connects the handle to the internal locking mechanism, usually made of stainless steel or brass.
Backset and Distance: Measurements such as 40mm–70mm backset and 72mm/85mm center distance determine compatibility with different door types.
This internal structure makes mortise locks stronger and more resistant to forced entry than standard cylindrical locks. Every component is integrated within a reinforced casing, ensuring long-lasting performance even in high-traffic areas.
The popularity of mortise locks lies in their balance between robust construction, precise engineering, and elegant design. Below are the core features that distinguish them from other lock types:
Mortise locks are highly secure due to their deep-set installation and solid metal bolt. The lock engages directly with the door frame, making it difficult for intruders to tamper with or force open. The internal mechanism can also include additional deadbolts or latch guards for advanced protection.
Our mortise locks are crafted from stainless steel (SS201/SS304), brass, and zinc alloy—each material chosen for its resistance to corrosion, wear, and environmental stress. The electrolytic steel shell protects internal components, ensuring long-term reliability even in humid or coastal environments.
Precision machining ensures that the latch and bolt slide effortlessly with minimal noise. The 8mm follower provides stable handle rotation, preventing wobble and ensuring consistent motion after years of use.
We offer a wide range of backset options (40mm–70mm) and faceplate sizes to suit various door thicknesses and designs. Whether for narrow aluminum doors or solid wooden entrances, our locks can be tailored for perfect fit and function.
Aesthetic versatility is another advantage. Customers can choose between Satin Stainless Steel (SSS) for a subtle matte look or Polished Stainless Steel (PSS) for a glossy, reflective appearance. Custom finishes like gold, bronze, or black plating are also available for specific interior themes.
The solid metal bolt ensures firm locking engagement, while the 3mm-thick faceplate provides additional protection at the door edge. Together, these components deliver superior mechanical strength.
Mortise locks offer distinct advantages compared with other locking systems such as cylindrical or tubular locks.
| Feature | Mortise Lock | Cylindrical Lock |
|---|---|---|
| Security Level | High – solid bolt set within door body | Moderate – surface-mounted mechanism |
| Durability | Heavy-duty, long lifespan | Shorter lifespan under heavy use |
| Design Flexibility | Compatible with various handles and trim styles | Limited customization |
| Maintenance | Minimal after installation | Requires periodic tightening |
| Application | Ideal for high-traffic doors | Suitable for light residential use |
Because the lock body sits inside the door, the mortise lock distributes force evenly, reducing stress on the handle and frame. This design makes it suitable for main entrance doors, hotels, offices, and institutional buildings where both appearance and performance matter.
Mortise locks are versatile and can be used across various settings, depending on the design and function.
In homes, mortise locks are often installed on main entrances and interior passage doors. They provide better security than basic locks while maintaining an elegant, flush-mounted look that complements modern and classic interiors alike.
For offices, retail stores, and corporate spaces, mortise locks offer high strength and reliable access control. They handle frequent use and ensure long-term alignment without loosening over time.
Hotels and resorts commonly use mortise locks because they combine aesthetic appeal with functionality. They can integrate with electronic card systems or privacy features to provide secure yet user-friendly room access.
Hospitals, schools, and government facilities use mortise locks for heavy-duty performance and compliance with safety standards. Fire-rated mortise locks can be installed in emergency exit doors for added protection.
Mortise locks made from reinforced stainless steel and zinc alloy withstand exposure to dust, moisture, and temperature variation, making them ideal for warehouses or factories.
Their adaptability makes mortise locks a practical solution for almost any environment that requires dependable security and design consistency.
Our mortise locks can be customized according to specific project requirements or aesthetic preferences. This flexibility allows architects, designers, and distributors to create solutions that align with brand and functional needs.
Customers can choose from multiple backset sizes—40mm, 45mm, 50mm, 60mm, or 70mm—and center distances like 72mm or 85mm, suitable for both European and American standards.
Options include:
Front Plate Materials: SS201 or SS304 for high corrosion resistance.
Bolt Composition: Stainless steel, brass, or zinc alloy depending on strength requirements.
Finish: SSS, PSS, or custom colors such as matte black, antique bronze, or gold plating.
You can select round head or square head plates, depending on whether your project emphasizes contemporary or traditional aesthetics.
We provide OEM and ODM services, allowing customized logos, engraved marks, and packaging to match your company’s branding. This is particularly valuable for hardware suppliers and contractors who want to differentiate their product line.
Available configurations include passage locks, privacy locks, entrance locks, and double-cylinder mortise locks. Each type can be adapted for different operational requirements, from residential to industrial security.
By offering multi-level customization, we ensure that each mortise lock aligns perfectly with design intent, door specifications, and user expectations.
Proper care ensures that your mortise lock continues functioning smoothly and retains its finish over time. Follow these best practices:
Regular Cleaning: Wipe the faceplate and handle with a soft cloth. Avoid acidic or abrasive cleaners that could damage the finish.
Lubrication: Apply a small amount of non-oily lubricant to the bolt or latch mechanism once or twice a year to maintain smooth operation.
Check Alignment: If the door becomes misaligned, tighten the screws or adjust the strike plate to ensure the bolt fits perfectly into the latch hole.
Inspect Screws and Fittings: Periodically check for loose screws caused by frequent door use.
Avoid Excessive Force: Always operate the handle and key gently to prevent internal wear or misalignment.
Our mortise locks are designed to endure frequent use, but routine maintenance further extends their service life and performance consistency.
Choosing the right mortise lock means choosing a product that delivers reliability, precision, and lasting value. Our locks stand out due to:
High-quality materials: Stainless steel, brass, and zinc alloy construction for durability and corrosion resistance.
Flexible specifications: Multiple distance and backset options to fit international standards.
Elegant finishes: From satin to polished surfaces, providing both functionality and beauty.
Customization services: OEM and ODM options for specialized markets and branding.
Strict quality control: Each product undergoes rigorous testing for strength, fit, and smooth operation.
Our mortise locks are suitable for residential projects, commercial buildings, hotels, and institutional facilities, combining security with refined design. Whether you need a standard model or a fully customized specification, our engineering and production teams deliver excellence in every detail.
A mortise lock is more than just a locking device—it’s a complete system that balances design, security, and engineering precision. Its concealed installation, strong structure, and adaptability make it the preferred choice for professionals who value both safety and style. From stainless steel finishes to customizable backsets and head types, mortise locks offer endless possibilities for modern architecture and interior design.
Our mortise lock collection represents craftsmanship built on reliability and innovation. Whether for a high-end residence, office, or hotel, these locks provide peace of mind, aesthetic harmony, and long-term performance.
