belvius – Technology and design combined for enhanced security
The high-quality reversible key system belvius offers a high level of security and comfort. Its unique design, intuitive handling, and comprehensive product range make the reversible key ideal for a wide variety of applications. The symmetrical key design enables effortless insertion into the cylinder—regardless of the insertion direction. Even in poor lighting conditions or limited visibility, operation remains comfortable. Manipulation protection and various copy protection options meet the highest requirements for mechanical security.
belvius is individually configured by authorized partners via our MKS system.
Features
- Reversible key technology: comfortable handling of the key even in poor lighting conditions
- Key without sharp edges, making it more comfortable to carry in your pocket
- Standard protection against bumping and impact picking
- Premium drilling and pulling protection
- Concealed or movable copy protection for technical protection against illegal key copies
- New patent for legal protection against illegal key copies
- Less wear and increased stability thanks to a stronger key made of nickel silver
- belvius SL and belvius SLX series for even more manipulation protection and more locking functions
- Optimal for protective fittings with cylinder cover thanks to extended key shank
- Extensive range for individual needs and requirements
Purple ball provides distinctive design and stands for proven BKS brand quality
BKS customer profiles – Security to your standards: Discover customized locking systems – Learn more
Individual key design – Make your key unique – Learn more
Different cylinder colors for locking systems – Security meets design: Choose the perfect cylinder color for your door – Learn more
- Modular locking systems – Maximum flexibility for your security: Discover our modular locking systems – Learn more
belvius: The right choice – not only in terms of security
With its extensive product range, the flexible and comfortable reversible key system can be used in a wide variety of areas. By expanding to include special, padlock, and furniture locks as well as mailbox cylinders, belvius offers a solution for almost every application.
Copy protection
By choosing a concealed or movable copy protection version, you make no compromises in protecting against illegal copies.
Manipulation protection
Hardened anti-picking and anti-bumping pins always provide basic security. Additional protection is optionally available through drilling and pulling protection as well as the belvius SL and belvius SLX versions.
Flexibility
Mechanical, mechatronic, and electronic access points can be optimally combined by integrating the electronic locking system ixalo | SE.
Technical data & standards
| Highlights of the versions | 
|
|
|
|---|---|---|---|
| DIN 18252 and EN 1303 certification | x | x | x |
| VdS version optional | x | x | x |
| 6-pin cylinders (from construction length 27/27) | x | x | x |
| Protection against picking and bumping | x | x | x |
| Standard drilling resistance | x | x | x |
| Optional drilling protection (standard for blocking locks) | x | x | x |
| Optional drilling and pulling protection | x | x | x |
| Concealed or movable copy protection | x | x | x |
| Additional manipulation protection via lateral locking bar | x | x | |
| Up to 4 additional query elements for extended functionality | x | ||
| Up to 8 additional query elements for maximum functionality | x | ||
| Modular design optional | x | x | x |
| Technical data | |
|---|---|
| Order length (BL) | 27, 31, 35 + 5 mm increments up to 120 mm per side |
| Special lengths | Cylinders up to total length 240 mm |
| Locking | registered locking, master key system |
| Cam | Standard, multiple cams, special versions |
| Emergency and hazard function | optional, both sides from BL 31/31, one side from BL 27/31 |
| Freewheel function (FZG) | optional, from BL 31/31 |
| Drilling protection | optional for master key systems, standard for blocking locks (BS) |
| Drilling and pulling protection | optional (BZ) |
| Locking security according to EN 1303 and DIN 18252 | Class 6 |
| Attack resistance according to EN 1303 and DIN 18252 | Master key systems: Class 0, optional Class B (with BS), optional Class D (with BZ) Blocking locks: Class B, optional Class D (with BZ) |
| VdS version | optional |
| SKG version | optional |
| A2P version | optional |
Design and function of the belvius cylinder
drill and pulling protection pins
- Consists of hardened material.
- Protects against drilling attempts and prevents the insertion of a special screw used for pulling out the cylinder.
query elements
coupling
anti-drill protection
cylinder spring
drive pin
core pin
concealed copy protection
locking bar
- Additional protection against tampering attempts.
- Enables greater variety in master key systems.
Product range belvius – one key for all cases
Double cylinder
Half cylinder
Thumbturn cylinder
Padlock
Outer cylinder
Cam lock cylinder
Key
Standards and security requirements
The belvius reversible key system meets the high requirements of standards EN 1303 and DIN 18252 as well as important safety guidelines in the field of fire protection, SKG and VdS certifications. Thanks to its high security standards, belvius is particularly suitable for complex master key systems in the commercial sector.
cylinder lock for locks
The EN 1303 standard covers cylinders for locks and defines requirements for their security against unauthorized opening and resistance to attack. It categorizes security classes based on criteria such as effective differs, number of movable tumblers, drill protection, and torsional strength of the cylinder. This standard is crucial for assessing the security of mechanical locking devices and is often combined with other standards to perform comprehensive security evaluations.
profile cylinder for door locks
The DIN 18252 standard covers profile cylinders for locks and defines requirements for their locking and attack resistance. This standard includes various security classes, which are determined by specific tests of the mechanical resistance of locking cylinders. In particular, it regulates BZKB drill/picking protection as well as resistance to physical attacks such as drilling or pulling out the cylinder. Compliance with this standard is important to ensure security in burglary-prone areas.
suitability for fire protection
Approved for use on fire and smoke protection doors
SKG resistance class 3
Products with SKG class 3 certification offer the highest protection against burglary attempts. This classification is ideal for areas exposed to particularly high security risks.Features of SKG class 3:
- Resistance time: These products withstand forced entry attempts for a longer period and thus provide significant resistance.
- Application area: Suitable for residential buildings, commercial properties, or other objects where a high level of security is required.
VDS
Profile cylinders with this marking are available in VdS version.
patent protection until 2038
Patent term of the product
GMK system
A grand master key system (GHS) is a complex type of master key system that is often used in large building complexes such as administrative buildings, universities, or hotels. These systems consist of many differently keyed cylinders, which are organized into different hierarchy levels or keying groups.The superior grand master key can operate all cylinders in the system, thus offering high flexibility in the management of access rights. In a GHS system, group-based assignment of keying numbers can also be carried out to maintain an overview of the various authorization levels.
This structure makes it possible to set up differentiated access authorizations and ensures that certain keys can only open specific doors, while other keys offer more comprehensive access options.
bumping
anti-bump protection
Modular
modular cylinder constructionConfigure products of the belvius series
Exclusive for authorized partners.
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