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Home > Heavy Duty Mechanical Door Lock > High-Security 4-Wheel Mechanical Combination Lock for Safe Box and Vault
High-Security 4-Wheel Mechanical Combination Lock for Safe Box and Vault
High-Security 4-Wheel Mechanical Combination Lock for Safe Box and Vault
High-Security 4-Wheel Mechanical Combination Lock for Safe Box and Vault
High-Security 4-Wheel Mechanical Combination Lock for Safe Box and Vault
High-Security 4-Wheel Mechanical Combination Lock for Safe Box and Vault
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High-Security 4-Wheel Mechanical Combination Lock for Safe Box and Vault
High-Security 4-Wheel Mechanical Combination Lock for Safe Box and Vault
High-Security 4-Wheel Mechanical Combination Lock for Safe Box and Vault
High-Security 4-Wheel Mechanical Combination Lock for Safe Box and Vault
High-Security 4-Wheel Mechanical Combination Lock for Safe Box and Vault

High-Security 4-Wheel Mechanical Combination Lock for Safe Box and Vault

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Product Description

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Basic Specifications

Model NO.C-932-4
Lock TypeMechanical Lock
Security LevelB2
MaterialHeavy-Duty Zinc Alloy / Steel
CertificationCE, CCC, ISO, RoHS, EMC
Combinations100,000,000 (100 Million)
ApplicationHome, Commercial, Bank Vaults
FinishBrushed Chrome / Satin Black
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Key Features

  • 100-Million Possible Combinations: The 4-wheel mechanical design offers $10^8$ unique codes, providing bank-grade defense significantly higher than standard 3-wheel locks.
  • Precision-Engineered Components: Crafted with high-grade brass or zinc alloy wheels to ensure smooth rotation and long-term consistency.
  • Battery-Free Reliability: A purely mechanical system that eliminates risks of electronic failure, dead batteries, or EMP interference.
  • Anti-Manipulation Technology: Features built-in "false gates" and a sophisticated lever-block mechanism to thwart picking attempts.
  • Rugged Construction: Heavy-duty lock body designed to withstand physical attacks, including drilling and punching.
  • Universal Footprint: Standard industry footprint (3.375" x 2.437") for easy retrofitting on existing safes and vaults.
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Comparison & Technical Data

Feature 3-Wheel Lock 4-Wheel Lock (C-932-4)
Total Combinations 1,000,000 100,000,000
Security Level Standard Commercial High-Security / Bank Vault
Manipulation Resistance Moderate Maximum
Physical Specifications
Outside Dimensions 420*370*200 mm
Steel Thickness Door: 5mm / Body: 1.5mm
Net Weight 10.5 kg
Locking Mechanism Two 18mm solid steel bolts
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Product Showcase

Mechanical Lock 1
Mechanical Lock 2
Mechanical Lock 3
Mechanical Lock 4
Mechanical Lock 5
Mechanical Lock 6
This mechanical combination lock is extremely cost-effective, providing maximum security with a heavy-duty cabinet design. Ideal for jewelry safes and high-value asset protection.
Production View 1
Production View 2
Production View 3
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Frequently Asked Questions

What makes a 4-wheel lock more secure than a 3-wheel lock?
A 4-wheel lock provides 100 million possible combinations (10^8) compared to only 1 million in a 3-wheel lock. This significantly increases resistance to brute-force guessing and professional manipulation.
Does this mechanical lock require batteries or a power source?
No, this is a purely mechanical system. It requires no batteries or external power, making it immune to electronic failures, dead batteries, or EMP interference.
Can this lock withstand harsh environmental conditions?
Yes, it is weather-resistant and engineered to operate reliably in temperatures ranging from -15°C to +50°C, as well as in high-humidity environments.
Is the mounting footprint compatible with standard safes?
Yes, it follows the standard industry footprint (3.375" x 2.437"), allowing it to be easily retrofitted into most professional safes, vaults, and security containers.
How does the anti-manipulation technology work?
The lock incorporates integrated "false gates" and a sophisticated lever-block mechanism that prevents professional pickers from "feeling" the wheel gates during a manipulation attempt.
What is the warranty period for this product?
We offer a 1-year warranty on our mechanical combination locks, reflecting our commitment to quality and durability.

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