The Disc with Hole Magnet for Magnetic Door Locks is a robust, secure component designed to enhance the functionality and reliability of magnetic door lock systems—widely used in commercial buildings, residential properties, hotels, and high-security facilities. Unlike traditional mechanical locks that rely on pins and keys, magnetic door locks use electromagnetic or permanent magnetic force to keep doors closed, and this disc magnet serves as a critical part of the locking mechanism, ensuring strong, consistent holding force and easy integration with lock hardware. Typically ranging in outer diameter from 25mm to 80mm, inner hole diameter from 5mm to 20mm, and thickness from 5mm to 15mm, it is crafted from high-grade neodymium (for maximum holding force) or samarium cobalt (for high-temperature or outdoor applications), with a durable coating to resist corrosion and wear.

A key role of this disc magnet in magnetic door locks is providing the core holding force that secures the door. In a typical magnetic lock system, the disc magnet is mounted on the door frame, while a metal plate (called an armature) is attached to the door itself. When the lock is activated (either by an electric current in electromagnetic locks or by manual alignment in permanent magnetic locks), the disc magnet’s strong magnetic field attracts the armature, creating a tight seal that keeps the door closed. The central hole in the magnet is essential for mounting: it allows the magnet to be bolted securely to the frame using heavy-duty screws, ensuring it stays aligned with the armature—even if the door is slammed or subjected to force. For example, in a commercial office building’s entry door, a 50mm neodymium disc magnet with a 10mm hole might be used in an electromagnetic lock. When an employee swipes their access card, the lock’s coil is energized, strengthening the magnet’s field and pulling the armature tight, securing the door against unauthorized entry. The hole ensures the magnet is mounted firmly to the frame, preventing it from shifting over time and compromising the lock’s security.

In high-security applications, such as data centers or government facilities, the Disc with Hole Magnet is paired with multiple magnets or reinforced armatures to create a stronger lock. A 70mm samarium cobalt disc magnet with a 15mm hole, for instance, might be used in a double-lock system, where two magnets work together to provide holding force of over 500kg—making the door nearly impossible to force open without authorization. The samarium cobalt material is chosen for its resistance to high temperatures, ensuring the lock remains functional even in environments with heat-generating equipment (like server rooms).

Residential and hotel applications prioritize ease of use and aesthetics, and this disc magnet delivers on both fronts. In a home’s smart lock system, a 30mm neodymium disc magnet with a 6mm hole can be integrated into a sleek, modern lock design. The magnet’s small size allows the lock to be installed without bulky hardware, while its strong force (up to 100kg) ensures the door stays closed securely. The hole in the magnet enables it to be hidden behind the lock’s cover plate, maintaining the door’s clean, uncluttered appearance. In hotels, magnetic door locks using these disc magnets are popular because they are easy to program (with key cards that can be quickly activated or deactivated) and require minimal maintenance—thanks to the magnet’s durability and resistance to wear.

Durability and weather resistance are also critical for outdoor or high-traffic doors. The magnet’s surface is coated with a thick layer of nickel-copper-nickel plating or epoxy resin, which resists corrosion from rain, humidity, or saltwater (making it suitable for coastal properties). The hole is also treated with a corrosion-resistant finish to prevent rusting of the mounting screws, ensuring the lock remains secure for years. Additionally, the magnet’s design is tested to withstand repeated use—thousands of door openings and closings—without losing magnetic strength or structural integrity.

Whether used in commercial high-security locks, residential smart locks, or hotel door systems, the Disc with Hole Magnet for Magnetic Door Locks combines strength, reliability, and versatility. Its ability to provide secure, easy-to-integrate locking force makes it an essential component in modern access control systems, helping to protect people and property while ensuring convenient entry for authorized users.