A door closer is a necessary and useful invention. It is a mechanism that automatically closes doors and contributes to less wear and tear door hinges and accessories. Correct installation and timely adjustment of the door closer will guarantee it Good work and long term service.

Device functions

Almost all door closers, regardless of the manufacturer's company, have the following functions:

1. Sliding speed of the door leaf.
2. Smooth closing.
3. The ability to keep the door open.

The sliding speed of the door leaf can be faster or slower. It is regulated by the degree of tension of the spring inside the device. It must be remembered that in no case should you pull the door while helping the closer. This will quickly incapacitate him.

The kickback allows you to smoothly close the door, pausing the canvas just before the closing itself. This function ensures that the door operates silently, eliminating loud sounds. In addition, the latching contributes to a tighter fit of the door sash to the frame. The angle at which it will decelerate before fully closing is usually in the range of 10-15 degrees. It can be adjusted when adjusting the closer.

Sometimes it becomes necessary to leave the door open. This is helped by a feature called "hold open". Thanks to her, the sash can remain open for a long time. When the door is fully opened, a latch is triggered in the device, which will hold the canvas in this position. To close the door, you just need to pull it slightly towards you. The lock will release and it will close smoothly. If the door is not fully opened, it will operate normally.

How to adjust the door closer with your own hands for each individual function is described below.

When adjustment is needed

The closer adjustment must be carried out when the seasons change. Since this is a mechanical device, oil is used for its correct operation, which changes its physical characteristics depending on the air temperature. With its increase, the viscosity of the working fluid decreases, and with a decrease in temperature, the oil thickens. Therefore, in the first case, the door will open too easily, and in the second, significant efforts will be required. Therefore, in spring and autumn, it is necessary to adjust the operation of the door closer mechanism.

In addition, the adjustment of the door closer is carried out in the event that there is a problem with closing the door. They can be expressed in the following:

• too fast or slow closing;
• the door moves abruptly or jerkily;
• the canvas is not attracted to the frame for a long time.

How to adjust the closer correctly

Adjusting the door closer is reduced to adjusting the operation of the valves inside the device, which act as a thermal shutter. They compensate for the degree of increase or decrease in oil viscosity with changes in external temperature.

It is not difficult to adjust the door closer with your own hands. All you need is a screwdriver and knowledge of the setup process. Before proceeding with it, a visual inspection of the door is carried out and its work is checked. This is necessary to identify irregularities and their subsequent correction.

Adjustment is made with screws. In some models of the device, they are hidden under a protective cover that needs to be pushed aside. In others, they are not hidden by anything and are located on the side of the device panel. For ease of adjustment, the screws are numbered 1 and 2. The first affects the overall closing speed, the second - the force of the pop.

DIY adjustment instructions

The closing speed of the leaf is changed by screw number one. Turning it counterclockwise speeds it up. Turning the screw clockwise slows down the movement of the sash.

The force of the pop is the range in which the door starts to slow down before closing completely. If there is a problem with locking, then you need to turn screw number two. Turning it clockwise will slow down the speed of the clap. Turning the screw in the opposite direction, counterclockwise, on the contrary, you increase its strength.

To set up the function that keeps the door open, you need to open it completely and then tighten the special lock. After that, the door will remain open if you open it at an angle corresponding to a given degree.

When adjusting the closer, follow the instructions given in the accompanying instructions for the device. Always remember that to avoid damage to the device, do not turn the screws more than two turns from zero.

By periodically inspecting the door closer and adjusting it, if necessary, with your own hands, you will extend the service life of the device and provide comfort when using the door.

A door closer is a device whose action is aimed at quietly closing the door. The mechanism functions as follows: a physical force is applied to the door, and an impulse arises, which is transmitted to the device and acts in such a way that the door opens and closes without sudden movements and noise. If you want to create a door closer with your own hands, you will need parts, the purpose of which is not related to the principle of operation of the door.

It looks like a door closer

Door closers are different. All differ in different sizes and colors, as well as the device of the mechanism.
Depending on the place of application, the installation for doors is:

• furniture - closers are used in compartment doors in the closet, sliding furniture elements, in the kitchen, and so on;
• door closer - fixed to the main, interior doors, as well as in compartment doors to storerooms and dressing rooms.

Existing options door closers

Furniture options for the closer are built into the structure when it is created. But door closers can be installed by yourself by creating a device with your own hands.
Closers configuration by device:

• a device with a drive and teeth;
• the use of a camshaft.

Door closers are installed at the top, at the bottom, and are also mounted in door elements.

Overhead door closer

This is a typical type of mechanism. There are options for installing closers at the top:

The closer installation is selected based on the door opening functions.

If the doors are opened from an entering person, then the closer is placed in the first way, otherwise the second method is applicable.

There is another option for installing the mechanism, it is applicable when the doors open in all directions.

Example of a door closer for a door opening in both directions

Parallel installation is carried out as follows - the mechanism is mounted on the door, the lever is mounted on the base of the door frame using a special plate.

Read also

Assembly and installation of the accordion door

Bottom closer

This door mechanism is used when there is no door frame. That is, if there are hinges on the doors, the lower mechanism is not used, since the closer in this case plays the role of a hinge.


The bottom closer is installed in a hole in the floor, which must be made in advance for this purpose.

Bottom closer design option

This mechanism has a top that fits into the ceiling. Without this component, the bottom closer will work for a short period of time.

Concealed door closers

The mechanisms are completely hidden in door leaf... There are 2 types:

Choosing the right door closer

Before choosing a door mechanism, you need to familiarize yourself with its functions. The principle of the door closer is to close the door quietly and smoothly. This is reflected in the following factors:

1. Saving heat in the room.
2. There is no noise when the door moves.
3. Noise isolation. With a tight-fitting door, there is no extraneous sounds from the street or another room.

The principle of the door closer

For the correct and long-term operation of the door mechanism, it is required to make the right choice of a door closer.
For the correct functioning of the door closer, as well as long-term operation By design, there are several rules, guided by which you can avoid mistakes in the manufacture of the mechanism or its purchase.

The scheme of the door closer

Depending on the appearance, functioning, as well as type - closers have a different pricing policy.

Do-it-yourself door closer installation

The door closer can be produced and installed, adjusted from different means... How to install an overhead door closer?

Detailed instructions for installing a door closer

Step-by-step instruction

If there is no layout in the set, then in technical passport the exact dimensions and measurements are indicated by which the door closer can be mounted.

Door closer adjustment

After installing the closer in the door, a check is needed. If the door opens tightly, closes or slams, you can adjust the door closer with your own hands.


There are 2 screws on the door closer. They take over the main functions of the mechanism. 1 screw - speed when closing the door, 2 - adjusting the tightness of closing the door and its adherence to the frame. If the door slams, you need to adjust the second screw. It must be twisted slowly (a little - half a turn), then check the closing of the door. This should be done until the door stops slamming.

Door closer adjustment options

To close the door a little slower, you need to turn the screw clockwise so that the speed is counterclockwise.

Closer with more than 2 screws

There are door closers with more than 2 adjustment screws. In this case, the purpose of each screw is indicated in the technical passport. In addition to the standard door adjustment screws (speed and pop), there are also screws that are responsible for other functions of the mechanism.


One screw serves as a door brake when opening. That is, it will not work to open the doors with a sharp movement. The second screw leaves the doors open. That is, if the door is wide open, then it will remain in this position and will not close.

Drawing and diagram for adjusting the door closer

The screws are also adjusted slowly and half a turn.

About Bulldors plant, Kazan manufacturer of steel door designs, among the models of the assortment range of which the doors Bulldors 24 and Bulldors 23 are especially popular.

Production lines

Spiritual, harmonious tranquility and comfort of staying in one's own home are able to provide doors, metal shackles of which block the entrance to strangers and unwanted guests. It is the entrance door structures made of steel sheet from the manufacturer "Bulldors" are able to guarantee protection against unfavorable conditions tenants of an apartment and other building, as well as keep property values ​​intact. Factory-made metal structures are also called "guard doors", which are able to solve all the functional tasks set in front of the entrance block of the opening overlap. Experts are well aware of all the principles by which door entrance blocks are selected, provided in the assortment on the construction market.
That is why the development strategy of the plant is reduced to the manufacture of truly practical and reliable structures, which include protective, noise-insulating, heat-insulating, as well as aesthetic indicators of quality products. Each unit lineup the manufacturer "Bulldors" ideally copes with the assigned functions and harmoniously complements the interior with any stylistic decision.
The Bulldors Steel Doors Factory is modern production, the base of which reunited in itself best technology domestic and foreign quality indicator. The production process of the plant is fully automated, starting with the preparation of door elements, ending with the packaging functions.
The high degree of automation allows in the factory to produce up to 800 units of quality products from the conveyor during the day, which provides the consumer with a catalog. Full automation technological process production of metal door covers, provides uninterrupted and high-quality satisfaction of consumer demand in retail chains construction markets door products.
The industrial complex of the Kazan plant operates on modern high-tech equipment:

Automated lines for the production of door panels of the "Salvagnini" company (Italy). The equipment allows to exclude the participation of the human factor, thereby increasing the speed, production capacity, as well as improving the quality of products.

Rental automatic machines profiling door frames. Automatic installations are able to ensure the accuracy of profile rolling metal structures from a geometric point of view, and also allow the production of a steel sheet profile from a single sheet metal, which makes metal sheets stronger.

Robotic welding complex of the Japanese product "Kawasaki". Data automatic installations welding machines produce welded seams that do not require additional cleaning. Robotic complexes, thus, save time on unnecessary operations and increase the strength indicators of reunification.

Installation laser cutting Japanese-made "Mazak". A typical setup allows high precision laser cutting operations to be done with increased level the degree of complexity that metal products require.

Automatic paint conveyors for door surface treatment with powder-polymer coating of the Swiss manufacturer "Gema" provide a high-quality and uniform coating layer. Application takes place in an electrostatic field using robotic sprayers. These paint lines provide high level high-quality application decorative coating on the steel door panel.

An extensive fleet of CNC machines is able to provide high rate accuracy of operations software without the physical participation of a person. It is the advanced technology and state-of-the-art high-precision automated equipment that recreates flexible door manufacturing, which includes a full cycle of production of steel entrance structures that meet both the recommended and prescribed quality standards and the preferences of consumer demand.
Production of this level cannot produce defective doors or low-quality metal products. Doors leaving the conveyor under the Bulldors trademark meet high quality standards.

Model range of products

The range of products manufactured by the Kazan Steel Door Blocks Plant is presented in the following names, which can be demonstrated by the catalog:

Door block models	External / internal door trim	Locking devices	Recommended value (by factory)
Bulldors-11		- lever lock G 1011 - night latch - doorhandleН0826 in chrome	$148,5
B-12	- powder-polymer coating (copper color) - laminated MDF		$150
B-12S	- powder-polymer coating (copper color) - MDF skin	- cylinder lock G1211 - night latch - door handle Н0826 in chrome-lever lock PRO-SAM 3V8-8U	$189
B-12T	- powder-polymer coating - MDF skin, mirror	- cylinder lock G1211; - door handle H0826 in chrome; - lever lock PRO-SAM 3V8-8U	$213
Bulldors 23	- powder-polymer coating (copper color) - laminated MDF (structure valuable breeds wood)	- Cylinder lock Bulldors D-1 - Armor plate - door handle Н0783 in chrome - lever lock Bulldors D-2	$189
Bulldors 24	- powder-polymer coating (copper color) - MDF (1 cm) with volumetric pattern - PVC coating	- cylinder lock Bulldors D-1 - mortise armor plate - door handle Н0783 in chrome - lever lock Bulldors D-2	$224,5
B-25	- MDF (thickness 10 mm) with volumetric pattern - PVC coating - platband - PVC	- cylinder lock Bulldors D-1 - mortise armor plate - night latch - door handle H0783 in chrome	$272,7
B-26	- powder-polymer coating - MDF (1 cm) with volumetric pattern - PVC - black glass	- Cylinder lock Bulldors D-1 - mortise armor plate - door handle Н0783 in chrome - lever lock Bulldors D-2	$282,6
B-27	- powder-polymer coating - MDF (thickness 1 cm) with volumetric pattern - PVC - mirror	- cylinder lock Bulldors D-1 - mortise armor plate - handle Н0783 in chrome - lever lock B-D-2	$252,7
Steel 12		- cylinder lock Guardian-12.11 - handle Н0826 in chrome - lever lock PRO-SAM 3V8-8U - peephole	$198,4
Steel-23	- powder-polymer coating - powder-polymer	- cylinder lock B-D-1 - armored lining - night latch - handle Н0783 - lever lock B-D-2	$213
Laser 24	- powder-polymer coating - composite inserts - MDF (1 cm) with three-dimensional pattern - PVC	- handle Н0783 - lever lock B-D-2	$240,30
Lux-25 P-1, Lux-25 P-3	- MDF (1 cm) - 2D patina drawing - MDF (1 cm) - 2D patina drawing	- cylinder lock B-D-1 - mortise armor plate - night latch - handle Н0593 - lever lock B-D-2	$428
Lux-25 P-4; Lux-25 P-5	- MDF (1 cm) - 3D patina drawing - capitals - MDF (1 cm) - 3D patina drawing	- cylinder lock B-D-1 - mortise armor plate - night latch - handle Н0593 - lever lock B-D-2	$504

Technological advantages

The following advantageous qualities in the design can be noted:

The voids of the panels are filled with polyurethane foam;

A special door frame seal is used;

Polymer powder coated steel surface;

Durable door frame made of a single sheet material;

Locking devices are used in accordance with the requirements of the Ministry of Internal Affairs of the Russian Federation;

Anti-removable crossbars make the entrance blocks unapproachable;

Hinges with thrust bearings;

Reliable door leaf made of solid bent steel sheet;

Wide platband.

Today, many people install door closers on both entrance and interior doors. This device requires constant careful maintenance. After all, the constant opening and closing of the door causes an imbalance in its mechanisms. All device malfunctions are eliminated by adjusting it. Let's try to figure out how to adjust the door closer with our own hands.

Mounting the device

This work is not difficult at all. Even a person without experience in such matters is capable of installing the device on his own.

Typically, a template is included with the door closer. He helps to carry out installation work. Installation is carried out as follows:

Instructions for use will help adjust the device yourself. Correct adjustment closer is as follows:

1. Typical mechanisms such as Apecs, Armadillo, 9n50 contain two screws. One allows you to adjust the speed at which the door leaf moves. According to the instructions, it is possible to turn it a certain number of times. And the second screw is needed to adjust the closing speed. The mechanism can be weakened or made more rigid. Adjustment is carried out by loosening or tightening the spring. If you tighten it, the door closing will slow down. When loosening, on the contrary, the opening of the door leaf is freer. The adjustment screw must not be turned more than once. Otherwise, the device will depressurize, resulting in oil leakage.
2. Setting the deadlop... If it works correctly, the door does not close until the very end. In other words, there is a gap until it closes completely. Also, thanks to the latch, the door leaf is tightly pressed against door frame... Correction of the closing speed is carried out by means of the second screw, which is located directly on the door closer body. As soon as ten to fifteen degrees remains before the door is completely closed, the speed of the door slows down. Then there is a tight pressing of the canvas to the frame.
3. Adjusting the open position of the door leaf... It is possible to adjust the closer so that the door is open for a long time. To do this, you need to know how to adjust your door closer. The mechanism has a very convenient "hоldopеn" function. It keeps the door open. To set up this function, you need to open the door 90 degrees and then tighten the latch. As a result, when the door is opened to a certain degree, it will remain in the same place.

The latch mechanism is triggered and constantly holds the door leaf in the desired position for the required time period. To close the door, you need to pull it slightly towards the closing. Then the commit will be canceled. In case of incomplete opening, the door leaf moves in its usual mode without delay.

Video about self-adjusting the device:

Self-configuration of the device

In the closer mechanism, it is possible to configure only a few parameters: delay, latch and door closing speed. Modern mechanisms can be equipped with speed control in the range of 80-90 degrees.

When adjusting the mechanism with your own hands, it is important to know the following nuances:

1. Closers are used for all types of doors - for external and for indoor. It is advisable to set a high speed for the front door. This is necessary to get into the house fewer insects and cold air. Room closers can be set to slow speed. When choosing a speed, factors such as seasonality and personal preferences of the residents of the house should be considered.
2. If a lot of people constantly enter and exit the room, then it is necessary to set the closer for an intermediate stroke. So you can organize the passage of several people in a row for one door opening. In order for the door leaf to always be open, the corresponding screw must be used.
3. When people adjust the door closer on their own, they often forget about the closure. It is needed so that the door leaf closes faster. It is important to find " the golden mean". Then there will be no sudden slamming of the door or its impact on the door frame.

How to weaken the mechanism?

Often required auxiliary door closer adjustment... It happens that he works hard. Then extra effort is needed to open the door. To make the door work more smoothly, you need to loosen the screws. If you unscrew them completely, the door will be open all the time.

The location of the screws varies. They can be located in front or on the side, it depends on the design of the mechanism. The instructions will help determine the location of the screws. In it, the manufacturer indicates the position of all elements of the closer. Today there are several models of door closers that are very popular. Their advantages are ease of use and ease of installation and even adjustment.

The most popular models include:

1. Dorma... Such devices are designed for installation on external and internal metal doors.
2. Bulat... Frost-resistant door closers. Made of high strength steel alloy;
3. Diplomat... Manufactured from high strength steel. Such closers are resistant to sudden changes in temperature.
4. Apecs... They have a function in which it is possible to adjust the permanent fixation.

The above models have several advantages. Therefore, they will become more and more popular every year. Most of the manufacturers produce door closers from high quality materials. Due to this, the products last longer, even in the most difficult conditions.

Benefits of Dorma door closers

Dorma manufactures robust and reliable door closers. Therefore, their products are popular. Today, the closer mechanism is in great demand. Dorma TS-68.

This model is mounted at the top of the door. This option differs in versatility and functionality.

After all, such a device can be installed on almost any door. During installation no need to use mounting plates... Due to this, work is greatly simplified.

The Dorma model contains a special lever by means of which the door leaf locking force is adjusted.

The door closer of this model can be installed on both left and right door types. Installation work are fairly simple. Almost everyone can handle them. There are the following ways to mount the mechanism:

• From the hinge side;
• On the opposite side to the hinges;
• Parallel installation option. When using this method, a special corner is mounted on the side opposite to the hinges.

How to repair a door closer with your own hands?

It should be noted that often replacing the device is cheaper than repairing it... After all, many manufacturers make a non-separable case. Therefore, it is not possible to replace an inexpensive part, for example, a cuff. And the user is forced to purchase a new closer.

But a number of faults can be eliminated by hand. The most common failure occurs in the lever assembly. The main reasons for such a malfunction are a break in the lever, destruction at the place of its attachment. Also, the linkage becomes malfunctioning when the rod breaks as a result of damage to the housing. Such defects are eliminated by welding.

However, first you need to find out how expedient it is to repair the door closer. Perhaps a new rod will be cheaper than welding. When buying a new spare part, it should be borne in mind that it must be of the same company as the closer mechanism.

If the case of the device is disassembled, then the repair can be performed with the following tools:

• A set of hexagons;
• Pliers;
• Screwdrivers;
• Simple wrenches.

Abrupt door closure is caused by wear on the cuffs or oil seals. With such a breakdown oil leaks from the device... When the closer mechanism is collapsible, then replacement of these elements is possible. Otherwise, you will need to purchase a new case or the entire mechanism.

It so happens that the closer opens too slowly. The cause of this malfunction may be a high oil consistency. This usually happens after 4-6 years of using the device. If so, it might be worth trying to change the oil. But, as a rule, this is not provided for by the design.

There is another way to change the oil.... But for its implementation this from the repair requires locksmith skills. It consists in the following:

• Make a hole in the body;
• Cut the thread;
• Drain off old thick oil;
• Fill in new oil through the fitting.

A door closer is not at all a luxury item, especially if it is not about an apartment, but about an entrance or a public institution. With a sharp closing, the sash hits the box, and with a rather great strength... Such a load does not at all benefit the structure and shortens the service life.

There are also 2 types of doors - evacuation and fire, where a door closer is an obligatory element.

Operating principle

In general, the design of the device is the same for all models: a spring and a piston are located in a one-piece housing. When the sash is opened, the piston transmits force to the spring and compresses it. At the same time, oil flows specifically through the channels in the piston into the freed part of the body. It acts as a shock absorber

When closing, the pressure on the piston is released and the spring is extended. At the same time, the oil flows back and creates resistance to the movement of the spring, thanks to which the sash closes slowly and smoothly without impacts, with a slight acceleration at the very end - a latch, which ensures the tightness of the pressure.

Adjusting the door closer spring implies debugging the valves that supply a particular amount of oil. But if the valves regulate the speed and smoothness of the stroke, then the fundamental possibility of opening depends on the spring. One of the main indicators is the force of the spring, that is, the force that it provides when straightening. Obviously, different sash weights require different forces. According to this indicator, the mechanisms are divided into 7 classes. A class 1 device can control a door leaf weighing no more than 20 kg, a class 7 device - 160 kg.

Varieties of the device

The biggest difference in instrument design is the installation method. Do-it-yourself door closer adjustment will depend on both factors. There are 3 categories.

• Upper - got their name for the place of installation - the upper part of the canvas. The device is not masked, and, unfortunately, is not protected, therefore, being fixed on street entrance doors, quite often becomes a victim of hooligans: the lever of the device can be bent by applying force. To adjust its work, you will have to straighten or replace the lever.

Overhead closers differ in the type of transmission.

• Gear-driven mechanisms - the force is transmitted to the piston using a toothed gear. It is a simple and affordable device. An example is the norman model made from silumin.
• Mechanisms driven by a camshaft - here the cam protrudes as the axis of the closer, located between the opening and brake pistons. During opening, the cam compresses the spring by means of the opening piston, and when closed, it relieves pressure by the action of the brake piston. Such a device is distinguished by the maximum smoothness of the course. An example is the Diplomat model, which provides not only smooth closing, but also the possibility of speed correction.

• Floor structures are similar in design to upper cam-driven models. However, their installation should be provided for in the initial project.
• Hidden - the model is mounted in the door leaf - the upper end. When closed, the device is not visible; when opened, the lever between the sash and the frame becomes noticeable. Most often, a cam drive is also implemented here. The photo shows product samples.

Adjustment parameters

• Closing speed is the main criterion for the operation of the device. Factory settings may not suit the consumer. In this case, armed with instructions and a screwdriver, you can adjust the speed with your own hands.

This operation must be done at every change of season. The fact is that under the influence of temperature, the viscosity of the oil inside the body, respectively, also changes the speed of movement of the sash. If the oil is too "liquid", the flap will slam, if the viscosity is too high and the valve section is the same, it will close very slowly, which affects both the door leaf and the device.

• Adjusting the force of the door closer implies the second factor - latch. If there is a latch or a tight adhesion of the leaf to the frame is required, then the sash must be accelerated at the last 7-15 degrees of rotation.
• Delay before movement - provided by fixing the latch. In this case, the sash, open 90–95 degrees, is held for some time, and after a few seconds it starts to close.
• If the device is equipped with a hend open function, then it is also adjustable. The essence of the device is that the sash, open at an angle of less than 90 degrees, closes normally, but when opened at an angle of more than 90 degrees, it is held and remains open until the movement is started manually.

This function is very useful for outdoor and indoor door closers. input structures v medical institution where the transportation of non-ambulant patients is carried out.

Debugging the mechanism

• Adjustment of the door closer closing is carried out using the first valve - indicated by a unit on the device body. Turning clockwise accelerates the movement of the sash, while turning it slows down. No more than two full turns in both directions are allowed.

Debugging should be carried out at different intervals depending on the type of damping fluid. It is proposed to adjust the device from Geze 2 times a year, some other models - up to 4, with each temperature change.

• The second valve allows you to increase or decrease the closing speed. The principle is the same: counterclockwise rotation decreases the speed, clockwise - increases. Some models also have a third valve: it is responsible for the speed of movement at an angle of 80-90 degrees.
• Adjusting the dorma door closer also includes adjusting the holding time of the leaves open. A locking screw is used for this. It is tightened when the sash is open - 90-100 degrees.
• The hend open function is also activated when the sash is open; a lock is provided for its adjustment in the model.

The video describes in detail all methods of debugging the device.