Solutions Security hardware

At Javena, you will find everything related to security hardware solutions, advice and support. This page is the central starting point within our website for everything related to choosing, solving, installing and maintaining security hardware.
Whether you want to replace a cylinder, solve a lock problem or improve your security: here you will find the right direction and be guided directly to the correct information pages.
Selection guide for security hardware
Not sure which product or solution you need?
Our selection guide helps you step by step in making the right decision.
Here you will find information about:
- Which cylinder is suitable for your door
- How to determine the correct cylinder size
- The difference between thumbturn cylinders and double cylinders
- Keyed alike systems and master key plans
- When a cylinder should be replaced
- Which security class (such as SKG) is suitable
See also: Selection guide for security hardware
Additional information: learn more about choosing the right cylinder and determining the correct cylinder size.
Our services
In addition to products, we also offer practical support on-site and through various services.

Our services include:
- On-site measuring service for cylinders and locks
- Installation and fitting service
- Rental or loan of measuring tools such as the cylinder gauge
- Maintenance service for security hardware
- Service contracts and maintenance subscriptions
See also: Our services
Additional information: would you like to measure the cylinder yourself?
Read more about the cylinder gauge and how to correctly measure a door cylinder.
Troubleshooting
Experiencing problems with your lock, door or cylinder?
Below you will find common situations and possible solutions.

- Key turns with difficulty or gets stuck
- Door no longer closes properly
- Cylinder protrudes too far
- Lock feels stiff
- Lost keys or broken key
- Cylinder or lock needs replacing
See also: Problem solving for security hardware
Additional information: in many cases, replacing the cylinder or correctly adjusting the lock solves the problem.
Create a master key plan
Would you like to manage multiple doors with one system?
Then a master key plan is an efficient solution.
Ideal for:
- Homes with multiple doors
- Businesses and offices
- Property management and apartment buildings
See also: Create a master key plan
Additional information: with a well-designed master key plan, you can easily control who has access to each room.
Manuals & installation instructions
Would you like to do it yourself? Our manuals provide clear step-by-step instructions.
- Measuring a door cylinder
- Installation instructions for Zaso auxiliary locks
- Installation guidelines for S2 cylinders
See also: Manuals and installation instructions for security hardware
Additional information: correctly measuring a cylinder prevents mistakes when ordering a new cylinder.
Security & certifications
Security plays an important role in security hardware.
That is why we work with products that meet high standards and certifications.
Here you can read more about:
- SKG certifications and security classes
- Burglar-resistant properties of cylinders and locks
- What to look for when choosing secure products
See also: Certifications and quality marks for security hardware
Additional information: a good security class helps prevent burglary and improves the reliability of your locking system.
Maintenance of security hardware
Proper maintenance significantly extends the lifespan of your locks and cylinders. Here you will find information about preventing problems and maintaining optimal performance.
Including:
- Lubricating locks and keeping them smooth
- Maintaining cylinders
- Preventing stiff locks
- Using lock spray
- Preventive maintenance
Als see: Maintenance of Security Hardware
Additional information: regular maintenance helps prevent common issues such as stiff locks or keys getting stuck.
Security & burglary prevention
A properly secured home or building starts with reliable security hardware.
Here you will find practical information about improving your security.

Topics include:
- How to prevent burglary
- What burglars look for
- Reinforcing doors and cylinders
- Security upgrades for existing hardware
See also: Security & burglary prevention
Additional information: even a small upgrade can make a major difference in security.
Frequently asked questions
Which page should I use for my question?
Use the selection guide or troubleshooting page, depending on your situation.
Can I replace a cylinder myself?
Yes, in many cases this can be done yourself with the correct instructions.
What if my door no longer closes properly?
This may be caused by wear or incorrect adjustment.
Do you also offer on-site assistance?
Yes, we offer both measuring and installation services on location.
Need help?
Are you unsure or would you like personal advice? We are happy to help.
We assist you with:
- Advice on the right cylinder or lock
- Help with measuring cylinders
- Installation and fitting advice
Contact us via our contact page or WhatsApp:
