THE SHORTEST LIKBEZ
The cylinder mechanism of secrecy (CMS, lock cylinder, or simply "cylinder") is a code device that moves the bolt. It is on him that the secrecy and operation of the castle depend. Speaking in the language of analogies, without a cylinder, a mortise lock body is like a car without a motor.
90% of the cylinders that are on sale are European standard (DIN) pin cylinders. And in this article we will talk about them.
HOW TO REPLACE THE LOCK CELL
All locks are interchangeable. That is, if you previously had a eurocylinder from one manufacturer, then you can easily replace it with a cylinder from another. The protection class does not matter: instead of a primitive mechanism, you can put a top-secret and vandal-proof one.
The main thing is not to make a mistake with the length (size). The most popular sizes are 60, 70, 80, 90 mm (there are such larvae in the Palladium online store). In general, be guided by the thickness of the door, taking into account the thickness of the lining.
Also measure the distance from the left and right edges to the middle of the mounting hole. If they coincide and the cam is in the middle, then such a cylinder is called symmetrical. This is the standard option for most doors. If the distances do not match and the cam is offset to the side, then this is an asymmetric cylinder for the lock. It is installed on doors with a vestibule, doors entrance group, with decorative panels, etc.
Symmetrical cylinder mechanism key/key
Asymmetric cylinder mechanism key/turntable
The doors are different, it is not always possible to choose a cylinder that is ideally suited in size. But still, keep in mind that the outside of the lock larva should not stick out more than 3 mm. True, she should not go deep into the depths, otherwise it will be inconvenient to open the door.
BODY MATERIAL: THE HARDER, THE BETTER (AND MOST EXPENSIVE)
In the manufacture of cylinder mechanisms, the following alloys are widely used:
- Brass(middle segment and premium). Sufficiently durable and wear-resistant zinc alloy, which is not afraid of corrosion, dirt, dust and grease. Feels like brass larvae are weighty, and in appearance they are decorative (brass has an even, noble shade).
- Aluminium, ZAM(Economy class). Such cylinders usually have modest protection and a relatively small number of secrets, and the material itself is soft and light. For the entrance lock steel door this is not an option, but in a back room or a barn - why not?
- Silumin(almost for nothing). Cheap, fragile and record short-lived material. If you take a silumin cylinder in your hand, it seems that it is weightless. Any reasoning about reliability is simply meaningless.
TYPES OF CYLINDER MECHANISMS BY LOCKING METHOD
Key - turntable
From the outside, the door opens and closes with a key, from the inside - by turning the turntable. It’s more convenient: even a child can handle the door, and there is less wear on the key. The cost is slightly higher than that of CMS with other locking methods.
The key is the key
From both sides the door is unlocked with a key. The main inconvenience: if the key is inserted into the lock from the inside, you will not open the door from the outside. You'll have to call for your family to let you in. On the other hand, key-key is safer. If a thief enters an empty house through a window, then to get out, he will have to pick the lock or get out through the window, as he came.
half cylinder
For one-sided locking with a key. Use in back rooms and other rooms where there is no need to lock from the inside.
ENGLISH OR PERFORATED KEY?
English key
Larvae for door locks "Eurostandard" are usually equipped with English or perforated keys ("punch card").
English
Other names - flat, jagged. Cylinder mechanisms with such a key are used everywhere, but have low secrecy (less than 5,000 combinations on cheap models). A seasoned burglar opens them with a master key without noise and dust in 2-3 minutes.
Perforated
Other names are profile, vertical, punch card key. This key has notches in the form of holes instead of teeth. The secrecy of a Euro-larva with a perforated key can reach 10 million combinations and even more. You can mess around with a master key for half an hour and just waste your time.
But anyway:
Evaluate the complexity of the larva comprehensively. Don't judge her just because she has the English key.
A simple example. Here is our eurocylinder with a “good” perforated key (AL 60 C, 346 rubles), but with a “bad” English one (K 2J04 90, 1235 rubles). Only the first secrecy is 2 times less, there is no protection against drilling and the case is softer. Which one do you think is more suitable for front door?
FROM GENERAL INFORMATION TO PROTECTION
The class of the cylinder mechanism is determined by its protection from intellectual and force opening. In the first case, secrecy plays the most important role, in the second - anti-vandalism.
Secrecy - the number of code combinations, which depends on the number of rows and pins (pins) in the pin cylinder. The greater the secrecy, the longer the burglar spends with the lock, working with a master key or sorting out the keys. Primitive door grubs have less than 500 combinations, advanced ones have more than 10 million.
Anti-vandalism is determined by the equipment of the mechanism with protective elements. These can be floating, magnetic and hardened pins, reinforced inserts on the body of the larva, etc.
There is no GOST that unambiguously classifies all CMS: such and such protection for the first class, such and such for the second, etc. On the contrary, everything is conditional and streamlined. So, in GOST 5089-2011, the classes of cylinder mechanisms for door locks are defined as follows:
As you can see, there is a link to the time of hacking. But a simple buyer can only guess how to correlate minutes with combinations of secrecy and protection measures, because manufacturers usually indicate exactly them.
However, there is general rules, according to which the larvae for locks on the entrance doors are chosen:
- Secrecy of at least 50,000 combinations.
- Protection against drilling, bumping and knocking out.
- Possibility to install an armor plate.
- Body made of brass or other durable materials.
INTELLIGENT AND POWER METHODS OF OPENING THE LADDER OF A PIN LOCK
1. Bumping.
Opening using a blank key and a mallet (or any other object for tapping). With the right blank, hacking will be quiet and almost instantaneous.
Protection: anti-bump pins, false grooves on the elements of the balance mechanism, installation of an armor plate (will not allow a burglar to determine the type of cylinder and, as a result, prepare a key blank).
2. Pick-gun opening.
A pickgun is a lockpick pistol that causes the pins to alternately turn. The principle of operation is similar to bumping, the protection measures are the same.
3.Opening with a master key.
The master key is the main enemy of primitive cylinders with an English key. Protection: purchase of a high-security cylinder mechanism, false grooves on the elements of the balance mechanism, at least 4 rows of pins.
4. Drilling.
The tool is a drill with a diamond crown. There are several ways to hack. For example, you can drill out the core (and turn the mechanism with a regular screwdriver) or pins (zilch - and there is no more secrecy). Protection: hardened pins, reinforced inserts in the body, installation of an armor plate.
5. Knocking out, breaking, pulling out the cylinder.
Barbaric, noisy, but fast methods: the pros need 1-2 minutes. Protection: right choice larvae (should not protrude more than 3 mm), installation of an armor plate.
There are other methods - real (folded) and from the realm of fantasy (exposure to acid, liquid nitrogen).
It is important to understand that manufacturers have one technology, hackers have another, and it remains to be seen who is stronger and who is catching up here. One thing is obvious: both multi-million dollar secrecy and red-hot pins are not a defense, but an obstacle. And any obstacle can be overcome. The question is how long it will take - 30 seconds or an hour - and how much noise the crook will have to make.
WHAT TO REMEMBER
- In 90% of mortise cylinder (“lower”) locks, a European standard (DIN) pin mechanism is installed. It is easily recognizable by its teardrop shape.
- Cylinders from different manufacturers are interchangeable.
- The brass cylinder is ideal for the front door. For interior, you can take aluminum.
- It is better if the key is perforated (the lock with such a key is more difficult to open with a master key).
- Requirements for the cylinder for the front door: class 3-4, >50,000 combinations, protection against bumping, knocking out and drilling, the ability to install an armor plate.
Tags: cylinder mechanisms
The larva is the main secret part of the castle, containing special code. When choosing and buying a new lock, manufacturers leave the buyer the right to choose a larva for the locking mechanism. Buying a new larva is also necessary if the old one is broken or the key has been lost.
Parameters of lock larvae
First of all, you need to decide which particular larva is needed for the castle in each case. If, for example, for the larva in the lock there is a through groove in the form of a drop, the dimensions of which are: 34 mm in height, 10 mm in the width of the protruding part of the part, and 17 mm in diameter of the rounded part, then such a lock larva is made according to European standards DIN. When choosing a European standard larvae, certain difficulties may arise. Of course, any larva is suitable for the castle, since they all have the same size. On the other hand, we have the widest range.
If the larva does not correspond to European standard sizes or has a different shape, then there is not much choice, and only the same mechanism from a specific manufacturer. In the most extreme case, it may be a Chinese copy of very dubious quality.
Separately, it should be noted some models of locks from popular manufacturers from Israel - Mul-t-lock and SuperLock. These models comply with European standards and at the same time are equipped with a non-standard drive, which looks like a gear, not a cam. However, this does not pose any problem, since manufacturers of secrets for locks supply their products with gear drives, so that for such locks you can safely pick up a larva of any suitable manufacturer.
It should be noted that with the same cross section, the length of the outer and inner parts of the cylinders may differ. In this case, the length of the inner part of the larva only affects the appearance of the part. The most important thing is that the end of the secret itself does not hide behind the decorative pad of the lock or door handle. As for the length of the outer part, it plays a more important role. If the design of the lock does not imply the presence of an armored lining, then the end of the larva must be strictly flush with the door strip. In this case, a small protrusion is allowed - no more than 3 mm.
The larger the protrusion, the easier it is for a thief to open the larva by destroying it with, for example, an ordinary hammer. If there is an armored overlay, then the end of the secret should be as close as possible to its surface.
Types of keys and the quality of the secrets of the lock larvae
The type of mechanism of the larva is easiest to determine by the appearance of the key. For example, classic cylinder locks work with an English key. The blade of such a key is flat or figured, equipped with a serrated thread resembling a saw blade.
All locking elements are in the same plane. Almost all cylinder-type locks belong to the budget product segment. You can buy an inexpensive larva that opens with an English key for those premises that are not at high risk of opening, or in the case when it becomes necessary to provide the key to the premises to strangers.
If the key has a cruciform shape, then such a lock is quite easy to crack. Despite the fact that the cross-shaped key looks quite impressive, the secret of the lock contains only a few hundred combinations, which greatly facilitates the selection of a master key. In addition, the well of such a lock is quite convenient and wide for working with a master key. Such a lock will only help from " good people”, For professional thieves, he does not represent a serious obstacle. Cross-shaped mechanisms are especially fond of making the Chinese.
A semicircular disk wrench for DIN standard larvae can be found quite rarely, and the attitude towards such products is rather ambiguous. In the vast majority of cases, these are very simple mechanisms with minimal resistance to hacking and an elementary secret. However, there are also very reliable products, mainly from the Finnish manufacturer Abloy. That is why such keys are called Finnish. If you decide to buy a mechanism of this type, then you should opt for Abloy products.
The most serious protection can be provided by locking mechanisms that open with a punched card key. Such a key looks like a rectangular plate with a large number of recesses and grooves. Perforated keys are double-sided and are inserted into the keyhole horizontally. Larvae of this type belong to the middle price category. It is almost impossible to open them with conventional means. To enter the premises, criminals use special equipment or try to destroy the lock or the door entirely.
Resistance of various types of locking mechanisms to opening
The most high-quality and reliable keys are made on the basis of special designs - punched cards. For reliability, manufacturers supply mechanisms with special magnetic or electronic systems recognition, combine different types secrets. In addition to recesses and protrusions on the surface of the key, there may also be lateral teeth, different kind grooves irregular shape, etc. All secret elements are located with some offset from the vertical direction, asymmetrically.
For any key, you can choose a larva of suitable quality. If the mechanism of the larva is “sharpened” primarily for secrecy, then the materials from which all the moving parts of the lock mechanism are made are responsible for its service life. It is preferable that all the main elements of the castle be steel. If a manufacturer uses silumin, brass and other base and fragile materials, this is a bad manufacturer and the quality of his products is corresponding.
Most buyers traditionally consider the level of secrecy to be the main indicator of the quality of a larva. But in practice, the very concept of "secrecy" is rather arbitrary.
It implies that the mechanism contains a number of mating elements that occupy a certain position necessary to unlock the lock.
The simplest and cheapest models have only 4-5 pairs of pins, the point of contact of which must be strictly on the line of rotation to ensure free rotation of the core. Inside complex and expensive devices, the number of pins reaches 12 or more pairs. In any case, the number of possible combinations is more indicative of the technical perfection of the lock than of its "secrecy", which depends, first of all, on the quality of work and the features of the technological process.
Thus, the number of mating pairs of parts is of secondary importance, and the method of arranging and arranging the pins relative to each other comes to the fore. The developers of locking mechanisms, first of all, try to complicate the task of burglars as much as possible - they make a keyhole small size and complex shapes, provide the lock with additional elements that prevent the master key from working effectively, make false channels and moves, complicate the relief of contact surfaces, add the need to make an extra turn, etc. - to list all the methods of dealing with breaking locks, a separate article is needed.
Thus, even mechanisms with an average level of protection can greatly complicate the work of even the most experienced burglar - as a result, opening the lock will take long time, if at all possible.
However, criminals also follow the development modern technologies. Recently, the so-called bumping has become especially widespread. This method of hacking does not require any special qualifications or prior training. You only need a set of special bump keys of different configurations. Such a key is inserted into the keyhole, slightly turned to slightly tighten the mechanism, after which the attacker strikes the head of the bump key. From vibration, the elements of the secret of the lock become in the right position, and the lock opens.
It is possible to provide protection against bumping with the help of special electronic or magnetic codes, as well as the installation of special larvae without springs.
Do you urgently need the best and most reliable lock cylinder? Do you have a lot of requirements for the front door and this functional element? You can't make a choice best model cylinder?
Then the advice from the article and the recommendations of the competent masters of "Zamki-SAO" will be very useful to you. Prices for door larvae are very different, however, not all products are good. Consider the main factors to consider when buying a part.
How to choose the best larva for the castle?
You can buy a larva in almost any specialized store. However, there are a number of aspects that need to be considered first. An ideal and reliable lock cylinder must necessarily meet increased requirements, including the following points:
- The maximum level of secrecy.
- Trouble-free operation, including with intensive use of the front door.
- The best, highest degree of burglar resistance.
- Ease of use of the lock.
- Durability.
- Resistance to intellectual and forceful influence.
- Wear resistance and reliability.
Of course, there are other points that deserve consideration. In most cases, input manufacturers metal doors not the best larvae are installed in locks. As a rule, these are elements of medium and low secrecy. If the larva or cylinder is the weak link of the lock, then even a complex crossbar system will be opened in a few minutes by thieves and other intruders.
The reliability and quality of the larva is also determined by whether it is able to withstand power hacking options, including drilling, knocking out, breaking. Of course, it is best to buy a cylinder from a foreign manufacturer, as it will be of better quality.
What is the most reliable larva for the front door lock - the best models
Nowadays there are a lot of reliable and good lock grubs that are able to withstand bumping. As a rule, these are cylinders of the highest price category. The masters of our service department will kindly advise you and help you choose the most reliable cylinder for the lock on the front door. The products of the following three manufacturers have gained the greatest popularity, namely:
Whatever cylinder secrecy mechanism you choose, you should give preference to certified products from trusted manufacturers. Simplifying the design while maintaining the burglar resistance of the larva is the course taken by the owners of many lock and hardware companies.
If you need the best larva for the lock, then our leading masters will be happy to select the most reliable model, taking into account the input locking mechanism and your wishes. Moreover, they change the lock cylinder in a delicate way, provide long-term guarantees for the cylinder and services. We have been working with burglary-resistant and imported models for years, so we always offer our customers the most best options for price and quality. We are waiting for your calls!
How to choose device and core
The mechanism called the core, secret or larva is responsible for the secrecy of the lock. Its main purpose is to ensure the safety of the home from possible unauthorized opening and entry of uninvited guests into the premises. Keys are inserted into the larvae, which, when turned, open and close the locks.
The larvae can be very different.
The most common ones are:
- Cylinder. They have a good degree of protection against unauthorized opening.
Such locking mechanisms are manufactured under the RIM standard, in limited quantities, or the DIN European standard, the larvae of which from different manufacturers are practically interchangeable. The cores are selected depending on the thickness of the web and the location of the fastener relative to the inner and outer planes.
The table shows the types and features of cylinders:
| Cylinder system | Peculiarity |
| From the inside, the door is opened by a rotary handle or a turntable. It can be easily felt in the dark when it occurs. emergency or fire due to smoke in the room. In such a larva there is a movable cam that transmits movement to the crossbars. Its position must be adjusted when installed on site. | |
|
|
In this case, the door leaf opens with a key from both sides. The lock is very convenient, if necessary, to lock the door in order to prevent sick old people or children from opening it from the inside. In addition, a key inserted into the well from the inside can be used as additional protection. It will be impossible to open the door from the outside. |
|
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The door only opens from the outside. The half-cylinder is installed on doors in rooms where people are not usually present. These are: small utility rooms or special buildings, such as an armory. |
|
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From the key to the crossbar, the movement is transmitted more smoothly, with the help of a gear. The number of its teeth depends on the type of model and manufacturer.
|
- Disk. Their difference from other mechanisms lies in the presence of rotating disks instead of pins, which, when the locking device is opened, line up at a certain angle. The shape of the key is a semicircular section, with cuts placed on it, in accordance with the position of the disks.
Replacing the larva is more difficult, their nodes are not as universal as those of other types of mechanisms. In this case, it is more expedient to replace completely.
With disc larva
- cruciform. This is not a very reliable option. Pins located inside, sometimes you can even turn it with a regular screwdriver. To get to the larva, you will need to completely disassemble the lock.
The designs use pins that are built inside the larva on four faces when the key is turned. With many secrecy options, the cross-shaped cylinders in the lock can be easily opened using a screwdriver.
Tip: You should not change the larvae on such mechanisms, you should replace the element completely. But in any case, it will need a complete disassembly.
- Pin or English.
Such a door larva can be:
- English. This is not a very reliable design;
- perforated, it is opened only when the cylinder is knocked out or drilled out, which is quite difficult and time consuming.
- Increased complexity. They are very difficult to crack, manufacturers make the designs reliable and durable. Their price is more than usual, but you should not change the mechanisms with your own hands.
By purchasing high quality products of well-known brands, you can not change the larvae for a long time. This most often occurs when the key is lost.
Abloy Protec ruggedized element
In the most complex locking mechanisms are used:
- titanium body;
- armor inserts;
- a large number of combinations;
- pins are made of refractory metal;
- there are floating elements on the key.
It is impossible to pick up a key to such a lock, but it is quite possible to replace the larva.
Secrecy of the larva
For entrance doors, locks can be:
- Overhead.
Overhead
- Mortise, more reliable, locked on both sides with a key.
- Upper.
- lower, having only a locking function and additional fixation on the latch.
With additional latch
The material for the manufacture of the mechanism and the number of combinations of the lock determine their properties:
- Reliability and probability of resistance to mechanical stress.
- Wear resistance.
- Key mismatch probability.
Larvae can have three levels of secrecy:
- Low, with the number of combinations from 100 to 10,000. They are made from low strength materials and with a simple key profile.
- Medium, with the number of combinations ranging from 5,000 to 50,000. It has a complex opening mechanism, but is not very high quality.
- The highest, the number of secrets exceeds 100,000. They are distinguished by the quality of the materials used for manufacturing and high assembly accuracy.
Each larva has only its own design features, defining the process and the possibility of its replacement.
Choosing a new secret
The safety of property and the service life of the structure depend on the quality of the secret assembly of the lock.
When installing a product from a well-known manufacturer, it will not be difficult to choose the right node.
For this you will need:
- Check the compliance of the new mechanism with the dimensions and connecting dimensions.
- Pay attention to the quality of the material from which the larva is made.
Tip: You should not purchase a product from silumin. This is a very fragile and short-lived material.
- Brass, steel, aluminum or its alloy with zinc are best suited for locking.
- Savings are not always justified. A cheap mechanism can quickly break down, which will spoil the mood and lead to additional expenses. It is known that the miser pays twice.
Reasons for replacing the larva
It is clear that nothing is eternal. The nodes of the mechanism and its rotating parts gradually wear out. This process can occur smoothly, and sometimes a normally working lock suddenly began to open the doors tightly. There are several objective reasons that lead to the replacement of locks.
It can be:
- Assembly failure associated with wear of parts during operation.
- Defects from an incorrect attempt to disassemble the mechanism.
- Due to mechanical impact on the door leaf.
- After opening the lock with improvised tools, when the key was forgotten at home (see).
- When hacked by unauthorized persons.
- When the key is lost.
Disassembly and replacement of the lock
Before pulling the larva out of the door lock, if it began to work poorly, you first need to try to lubricate the internal components, including the lock. In this case, WD-40 fluid or regular machine oil is used. If after that the lock works just as poorly, the larva will have to be removed and disassembled, as in the photo.
To remove and open the door larva, you will need: a Phillips screwdriver and a tape measure.
If a mortise lock is inserted in the door, the work instructions suggest:
- Remove the middle screw of the mechanism.
- Insert the key into the well.
- Turn the key so that the larva is freely pulled out.
- Save screw.
Overhead door locks are completely removable. For this:
- The fasteners that hold the lock on the door leaf are unscrewed.
- Two screws are unscrewed that secure the larva in its place.
- The screws are set aside neatly.
In more detail, the entire process of removing and disassembling the larva shows the video in this article.
Installing a new larva
Before you change the larva in the door lock, you must purchase it correctly.
For this:
- The total thickness of the door leaf with upholstery or insulation, if any, is measured.
- If there are no changes, you can focus on the dimensions of the dismantled cylinder, which is much easier.
- The diameter of the removed larva is measured.
Tip: When buying a lock for an existing lock, you should take the removed cylinder with you. If this is not possible, you need to focus on accurate measurements.
- The new mechanism is selected in accordance with the color of the doors, otherwise it will not look very aesthetically pleasing.
To install a cylinder:
- Install the purchased larva in place of the previous one.
- Fasten with a screw, clearly hitting the hole that is intended for its fastening.
- A slight movement of the core in the plane of the lock will help to bait it on the fastener.
- The key is locked in the closed position.
- The lock is checked for operability with the door open and then closed.
- The lock should open and close smoothly and silently.
Only a high-quality door lock cylinder will provide reliable protection from breaking and entering by unauthorized persons.
The lock cylinder is the code part of the cylinder lock, which provides secrecy and moves the bolts. It is precisely because the larva is inserted inside the body and has an elongated oblong shape that it is called the "larva" in the commoner. A sort of steel embryo.
In fact, the larva of the door lock in a professional environment is called a cylinder mechanism of secrecy. Abbreviated "CMS".
This is the correct name for this important detail we will use the castle further in the text. But still, let's leave the "larva" in some places for better indexing;)
You can buy a larva or a cylinder mechanism of secrecy for a lock in a lock shop. And get a preliminary consultation - by phone numbers listed above.
Quite often, we hear the phrase from the buyer: “How can I replace the larva and what do I need to know in order to pick it up”? The request has not been surprising for a long time: it is very difficult for an unprepared person to understand the whole variety of cylinder secrecy mechanisms, their types, lengths and standards. In this article, we will consider the important parameters of the CMS and find out some of the nuances.
There are many types of CMS. Let's start with the most common ones, which comply with the European DIN (Europrofile) standard and are used everywhere.
Here is what the buyer first of all associates with the “door lock cylinder”:
Europrofile standard mechanisms are produced by many countries: from China to Europe. The cost of a cylinder, depending on the model and manufacturer, can vary: from 150 rubles to 20,000 thousand rubles. The higher the quality and better known brand mechanism, the more protective elements and innovative ideas are embodied in the lock cylinder, the higher its cost. For each model of a particular cylinder, you can write a separate material, for example, as a review article of the Slovenian CMS TITAN K56.
Here we will not dwell on any specific product, we will consider only the main parameters when choosing a cylinder.
The length and offset of the lock cylinder
We are sure that you do not need to explain the calculation of the total length of the cylinder - this is the distance from one edge to the other. The required length of the cylinder is selected taking into account the thickness of the door leaf and based on which cylinder lock you have chosen.
As we can see, the two parts of the cylinder are separated by a rotary cam. The width of the rotary cam is always 10 mm.
The displacement of the cylinder is measured from the middle of the fixing screw hole in both directions: external and internal.
An equilateral cylinder is one in which both sides are equal in length. The versatile cylinder has different lengths of the same parts.
For example, below is a versatile cylinder mechanism English type Turkish-made Kale Kilit with a total length of 71 mm. Often used on plastic doors.
The second example is a versatile Chinese-made cylinder movement with a total length of 90 mm. It is this size of the lock cylinder that is now popular on Chinese doors.
A cylinder of correctly selected length should not protrude much beyond the plane of the door leaf. If this wooden door, here the cylinder must be installed flush with the decorative trim or with the handle bar (up to 3 mm protrusion is allowed). If an armor plate is installed on the cylinder lock, the length of the outer part of the cylinder will depend on the particular armor plate, on the method of its installation and on the particular door.
There are no fundamental requirements for the length of the inner part of the cylinder. But if with inside the mechanism will also be flush with the door trim or decorative trim, it will look aesthetically pleasing and harmonious.
Lock cylinder with turntable
For ease of use, the door lock cylinder may have a rotary turntable. It allows you to close and open the cylinder lock from the inside without a key. At the same time, the turntable does not have “dead spots” - in any position, the native key will always open the lock.
Equilateral Chinese cylinder movement 60 mm long, with a turntable inside:
Versatile Italian movement 72 mm long, with turning handle on the inside (enlarged inner part cylinder is designed for thickness inner panel doors):
Other safety cylinder standards
If the cylinders described above fit some standards and can be installed in any cylinder lock case, then the following secrecy mechanisms considered have different sizes and fit strictly individually for one specific lock (or for some models of one manufacturer). For example, the cross-cylinder mechanism of the Turkish company KALE KILIT.
Suitable only for locks of this type (can be installed in locks of other Turkish manufacturers (for example, FAYN), or with a slight alteration, for Chinese-made locks (for example, 3M)).
But the domestic mechanism of secrecy under the cross key:
Suitable only for Kirov-made locks. And as you probably already understood, the Kirov movement cannot be inserted into the KALE KILIT case and vice versa.
For some domestic overhead locks, it is possible to purchase a cylinder separately. For example, the “FORT” mechanism, which often breaks down, is suitable only for locks manufactured in the city of Petrozavodsk.
The locks are of terrible quality, the mechanism of secrecy and the nodes of the lock are made mostly of silumin (a very fragile alloy), hence frequent breakdowns and, of course, the availability of a new cylinder! In the next photo, from left to right, you can see the cylinder mechanisms for the overhead locks "Glazov" and "Iset".
Their problem is the same soft materials and poor workmanship. Often such specific cylinders (cylinder selection options best quality no) are ordered and manufactured in China.
If you need to replace the lock cylinder in Nizhny Novgorod, our service specialists are always at your service by phone +7-987-110-30-43.
We will first find out what suits you, orient you at prices and, after agreement, we will send a master to replace you.
In the assortment of our company there is a huge selection of CMS. We sell both cheap Turkish and Chinese-made larvae, as well as highly secret CMS from famous European manufacturers. If, after reading the material, the lock larva still raises questions, we are always happy to advise you in the comments under this material.
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