Castle cylinder- this is the part of the cylinder lock that moves the bolt, and on which the secrecy of the lock depends. Professionals call the cylinder a cylinder security mechanism (CMS). Our clients often ask the question: “How can you change the larva, and what do you need to know to do this?” In this material we will look at the main parameters of the CMS and look at some examples.
For correct installation cylinder, you need to know the following parameters: the length of the entire cylinder, and the distance from the edges of the cylinder to the center of the mounting screw. In the diagram these are the distances "A" And "IN".
A cylinder in which both parts are equal in length is called equilateral.
If the lengths of the 2 parts are different, then such a cylinder is called scalene.
Its length is 90 mm. This size of a versatile larva is often found in the doors of an Italian company UNION, and also at the door made in China Outpost, Master-Lock, etc.
The parts of the cylinder are separated by the so-called rotary cam. Its width is 10 mm. Cylinder displacement is measured from the center of the steering cam. If the cylinder is selected correctly in length, it should not protrude too much beyond the door leaf, decorative trims or door fittings. If an armor plate is installed on a cylinder lock, the length of the protruding part of the cylinder will depend on the type of armor plate being installed, the installation method and the specific door. There are no special requirements for the length of the inner part of the cylinder.
Useful information
Mortise lock with latch for cylinder mechanism
A mortise lock with a latch for a cylinder mechanism is one of the most common types locking devices. It is quite reliable and easy to use. This design allows for the possibility of replacing the cylinder, which will save on the purchase of a new locking mechanism.
As a rule, the reliability and quality of the internal cylinder generally determines the reliability of the lock itself. Therefore, you need to buy the internal mechanism only from trusted manufacturers, while taking into account technical parameters cylinder. They have proven themselves well in the presented segment trademarks Elementis, Roto – TBM-Market catalog includes options different sizes, With different types larvae.
Entrance door lock cylinder buy in Moscow
The cylinder mechanism with a turntable is considered quite popular. It can be mounted on the entrance or interior door. But more often the cylinder mechanism for the lock is selected for entrance doors, because At a relatively low cost, it provides reliable protection against burglary. The turntable is a special rotary handle that opens the lock from the inside without a key. At the same time, with outside A cylinder mortise door lock with a latch can only be opened with a key, like any other standard lock.
To buy a larva for door lock, must be pre-measured total length cylinder mechanism. You can do this yourself using a regular ruler. If you are planning a replacement internal device in already installed lock, it is better to get the core and pick up a new one in the store that matches its size and design. If you have any difficulties in this matter, we are ready to advise you and help you with your choice.
We try to create the most complete range possible, so we are guaranteed to select the core for your lock. If necessary, we can offer high-quality door handles, presented in the next category.
How to choose the cylinder size? How to install a cylinder in a door lock?
Nothing could be easier! You only need to complete THREE steps!
- CHOOSE THE SIZE OF THE CYLINDER (CYLINDER) FOR YOUR DOOR
- BUY A CYLINDER
- INSTALL CYLINDER
Please , to avoid misunderstandings and get more detailed information about services, as well as availability, please call us before your visit.
How to choose the correct cylinder (cylinder) size?
You need to select dimensions A, B, C for your door, which are shown in the figure. Take a ruler and place it against the end of your door. In any door the cylinder is attached to just one bolt. The hole for this bolt is located at the end of the door. In the figure, this circular hole is located in the center of the cylinder between dimensions B and C. Most often, at the end of the door this hole is located in the middle. In this case, your sizes B and C will be the same. If your door has an offset hole, then size B will correspond to the distance from the outside of the door to the hole, and size C will correspond to the distance from inside door to opening. When measuring, consider the size of the hole itself. There is nothing to worry about if you are off by 2-3 mm in your measurements. The main thing is that the cylinder does not protrude too much from the door, and that the cylinder does not go significantly deeper into the door. Anyone can do this simple procedure.
The cylinder can be torn off with a key on both sides, or it can be opened on one side with a key, and on the other with a cylinder opening handle (turntable). Thus the cylinder can be a key-key or a key-spinner.
Don't forget that your door will look better if the color of the cylinder matches the color of your door hardware. All our cylinders are sold in two colors: gold and chrome.
How to install the cylinder?
Get the larva out of your door, in most cases door locks a cylinder with a rotary cam is used. Remove the bolt from the end of the door on which the cylinder itself is attached. Turn the key or cylinder turner so that the turning cam coincides with the profile of the cylinder and does not interfere with the free movement of the cylinder. Take out the old cylinder. Insert the new cylinder into its original location in the lock. To do this, insert the key into the cylinder and turn the key so that the cylinder locking flag (Fig. 3) does not interfere with the free movement of the cylinder in the lock (Fig. 4). If you have a cylinder with a turntable, then insert the cylinder from the inside of the door. The cylinder mounting bolt must tighten easily and freely! If the bolt is difficult to tighten, do not apply force; in this case, your cylinder is offset and the cylinder does not tighten along the thread.
The working part of the lock is the cylinder, also known as the CMS (cylinder security mechanism). Actually, this is the lock cylinder of the corresponding system itself. Often, a lock breakdown comes down to a malfunction of the cylinder, and you can limit yourself to replacing it. What types of lock cylinders are there? metal doors and how to choose the right one?
Lock cylinder design
The cylinder for a mortise lock consists of a cylinder with grooves. The grooves contain spring-loaded plates. The key (a metal blank with grooves) presses the plates. The cylinder rotates and drives the crossbar mechanism. The door closes (or opens, depending on the direction of rotation).
There are many versions of this basic design. Pins (pins, plates) can be positioned horizontally, vertically, or at an angle. Their number varies (it determines the level of secrecy), from two to thirty. There are double pins (one inside the other), magnetic, floating, etc. The cutting of grooves on the key is carried out under specific larva(i.e. under required quantity pins taking into account their location).
The more complex the door lock cylinder (the design and the higher the secrecy), the more difficult it is for a burglar to open the door in an intelligent way.
Basic parameters of larvae
1. Cylinder length.
2. Displacement of the cam relative to the middle. Cylinders can be scalene or equilateral. In the latter, the cam is located strictly in the middle, in the former it is shifted to the side.
3. Presence/absence of a turntable. The cylinder with a pinwheel is more convenient: the door can be locked from the inside without a key.
4. Secrecy mechanism.
There are three levels of secrecy:
Important: when choosing door cylinders special care must be taken. Usually the mechanism is suitable only for its own lock model, and less often - for several models of the same manufacturer.
Low – up to 5 thousand combinations;
Average – up to a million;
High – up to 4 million.
Types of larvae
Door lock cylinders have features depending on which door the lock is installed on.
For entrance metal doors they are most often used mortise locks(they are installed in the end part of the canvases). Sometimes their variety is inset (almost the same, only without the front panel). Inset locks are more often used as auxiliary locks, as well as for internal locking (cylinder with a pinwheel). The cylinder cylinder for the lock (mortise) is located in its body.
For wooden entrance doors(and for interior ones too) both mortise and rim locks can be used. For overhead locks, the cylinder is attached to the lock cover or directly to the door.
Popular lock cylinders with a spinner and those designed to be unlocked with a key on both sides.
Manufacturers and price
1. The price for a lock cylinder for Mottura (Italy) starts from 7 thousand.
2. Mul-t-lock (Israel) – from 5 thousand.
3. Lock cylinder Cisa (Italy) – from 8 thousand rubles.
4. Kale (Türkiye) – from two thousand.
5. Apecs (China) – from 600 rubles.
Undoubtedly, modern castles- This reliable protection your home. But in reality it is not always sufficient. For complete security, we recommend that you also install a security system. Such a system, together with good locks, guarantees you one hundred percent confidence and safety. To install such a system, it is best to turn to professionals. We recommend paying attention to the company MK KRONA. Security systems– their main profile. You can find out all the information in the apartment security section.
Video “Replacing the door lock cylinder”:
When choosing cylinders for metal door locks, it is better to give preference to models with increased secrecy. Indeed, nowadays it is possible to pick a regular lock in less than a minute.
