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LH & LX Series Lever Handle Locks – Automatic Locking Security with Superior Durability
When security, convenience, and long-term durability matter most, the LH and LX Series Lever Handle Locks deliver advanced mechanical performance for residential, commercial, and institutional applications. Designed with precision engineering and flexible keying systems, these high-performance locks combine automatic locking functionality with smooth operability and strong security resistance.
LH Series – Automatic Lever Handle Locking System
The LH Series is a lever handle-type automatic locking system that locks instantly when the door is closed. This makes it an ideal solution for offices, main entrances, service doors, and residential properties requiring automatic security.
Key Features:
- Automatic locking upon door closure (latch fastening system)
- Unlockable from outside using a key
- Easy unlocking from inside by simply turning the handle
- Fixed outside lever handle for added security
- Available in four functional models: LHL, LHB, LHS, LHT
- Optional LHL-S muffled type for low-noise operation
Unlock Hold Function Options:
Depending on the model, the unlock state can:
- Automatically cancel when the door opens
- Be canceled manually with the key
- Be controlled via a coin plug mechanism
This flexibility allows the lock to adapt to different operational and security requirements.
LX Series – Compact High-Security Lever Handle Locks
The LX Series offers compact yet highly durable lever handle locks engineered for superior security and smooth operability. These models are ideal for offices, public buildings, common entrances, and service areas.
Core Advantages:
- Excellent durability and long-term mechanical reliability
- Deadbolt throw options: 16 mm or 21 mm depending on model
- Multiple backset options: 32 mm, 38 mm, 51 mm, 64 mm
- Compatible with various door thicknesses
- Steady brace system allows offset door installation
Cylinder Options:
- GP Cylinder
- V18 High-Security Cylinder
- GV Cylinder
- 6-pin and 7-pin Cylinders
Optional advanced key systems include:
- Master Key (MK)
- Grand Master Key (GMK)
- Great Grand Master Key (GGMK)
- Construction Key System (CNK)
- Optional Universal Key System (UKS2) for GV cylinders
Enhanced Security & Emergency Options
Select models such as LX-45 and LX-45VF include emergency cylinders with visible indicators for safety-critical environments.
Thumbturn options include:
- Standard type
- BF high-operability type
- TM, TME, and TMB anti-manipulation types (resistant to forced rotation via drilled holes)
Installation Flexibility
- Available in R-type and L-type handing for different door swing directions
- Suitable for right-hinged and left-hinged doors (in-swinging and out-swinging)
- Designed for door and jamb gaps of 6 mm or less
- Guard plate front options available
Applications
✔ Office entrances
✔ Residential main doors
✔ Service entrances
✔ Commercial buildings
✔ Institutional facilities
✔ Public access areas
Why Choose LH & LX Series Locks?
- Automatic locking convenience
- Flexible unlock-hold mechanisms
- Advanced key management systems
- Multiple cylinder security levels
- Durable internal construction
- Emergency-ready configurations
- Quiet operation options
Reliable Security. Intelligent Functionality. Japanese Engineering Precision.
The LH & LX Series Lever Handle Locks provide a complete solution for projects that require automatic locking, operational flexibility, and high mechanical durability — all backed by precision-engineered components and advanced key systems.
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