Grade A Mechanical Door Locks
Basic Characteristics:
Grade A locks are the most basic and commonly used type of mechanical door locks. They typically have a simple structure with relatively weak security protection. Most Grade A lock cylinders use a single-row pin structure with minimal variation in pin groove positions and depths, making them easy to unlock using technical methods.
Features:
- Simple Structure: Mostly single-row pin lock cylinders with a basic keyhole design.
- Low Security: Due to the simple lock cylinder structure, they can be easily opened with tools like foil picking, offering limited anti-theft protection.
- Affordable Price: Grade A locks are inexpensive and suitable for low-risk environments.
Common Applications:
- Interior door locks
- Basic home security needs
- Non-high-security locations
Grade B Mechanical Door Locks
Basic Characteristics:
Grade B locks offer improved security and complexity compared to Grade A locks. They typically use double-row pin lock cylinders, making them more difficult to pick. While their resistance to technical unlocking is enhanced, they can still be opened with specialized tools.
Features:
- Double-Row Pin Structure: Increases the difficulty of unlocking.
- Moderate Security: Provides better protection than Grade A locks but can still be compromised by skilled lock-picking tools (e.g., foil picking tools).
Common Applications:
- Main entrance locks in standard residential homes
- Security doors requiring moderate protection
Super B-Level (or Grade C) Mechanical Door Locks
Basic Characteristics:
Super B-level (also known as Grade C) locks are the highest-security mechanical locks available on the market. These locks typically feature multi-row pin structures or disc-based mechanisms, sometimes combining both for maximum security. Depending on the manufacturer, this category may also be referred to as "Grade C locks."
Features:
- Multi-Row Pin Structure: Often incorporates three-row pins or disc lock cylinders, making unauthorized unlocking extremely difficult.
- Strong Resistance to Technical Unlocking: Highly resistant to foil picking, bump keys, and other unlocking tools, typically requiring several hours for professional unlocking attempts.
- High Security: Excellent resistance against tampering and brute-force entry, reaching a level comparable to that of safes.
Common Applications:
- High-security residential homes
- Villas
- Office buildings requiring enhanced security
- Vault doors and high-value storage areas
Super Lock Cylinder
Basic Characteristics:
Super lock cylinders represent high-end, custom-engineered security solutions. They incorporate multiple protective technologies and offer security levels far beyond Grade B and Super B-level locks, nearing that of safe locks.
Features:
- Multi-Layer Protection: Highly complex lock cylinder structures that may integrate pins, discs, and magnetic mechanisms for enhanced security.
- Extremely Difficult to Unlock: Specialized tools are ineffective for quick technical unlocking.
Common Applications:
- High-end residential properties
- Confidential rooms
- Financial institutions and other locations requiring top-tier security
Choosing the right mechanical door lock depends on security needs:
- For standard residential use, Grade B locks offer a good balance of security and affordability.
- For higher security demands, Super B-level (Grade C) locks are recommended to enhance anti-theft capabilities.
JJR Factory in China specializes in manufacturing various door locks, including mechanical door locks, bedroom locks, and smart locks. We welcome bulk orders!
