How Many Types of Door Closers Are There?

There are many advantages to installing door closers in your house, office or business place. Door closers can protect the door, eliminate loud impact sound, and prevent injury caused by fast closing and heavy doorways. However, you should not choose a door closer without studying what type it is.

• How many types of door closers are there?

• How to choose door closer?

• What are the problems when using door closer?

How many types of door closers are there?

Overhead door closers are old-fashion, making them a great choice for classrooms and busy offices. If you don't want to worry about bumping into devices, this kind of door closers is perfect. However, they are too large to hide.

The hidden door closer adopts the hidden design and does not hinder you. Unfortunately, these door closers are not suitable for heavy doors. You must install it on the inside of the door, which is why it is considered to be hidden from the outside angle. Door closers are ideal for houses and offices with lightweight doors.

Surface-mounted door closers are mounted on the door frame to extend to the door. Instead of drilling holes in the wall, you can get an automatic door closer that matches the paint of the door. You can leave it in silver metal or choose a color code for your office, home or business.

Floor spring door closers usually appear in high-class places such as city offices and fashion clothing stores. They are installed at the bottom of the glass door, which can slide in and out of the spring closer.

How to choose door closer?

Generally, the selection of door closer can match the size and weight of different doors according to different force or adjustable force according to the door closer specification parameters of the manufacturer. The closing force of the door closer usually specifies a value between 1 and 7. The larger the number, the greater the ability of the door closer.  

The factors that should be considered in the selection of door closer are door width, door opening frequency, use requirements and use environment. The width of the door is the most important factor in choosing the model of the door closer. The common doors include fire doors, wooden doors, aluminum alloy doors, glass doors, and steel doors. Usually, if the weight of the door is small, choose the model with less force, and vice versa. The door opening frequency is a factor closely related to the quality of door closer. For the occasion of frequent use, the door closer should have good sealing performance and long service life.

What are the problems when using door closer?

The installation screw is loose or missing, resulting in the door closer not in the correct installation position and the connecting arm is damaged.

When the door closer is closed, the cushioning effect becomes worse, resulting in the collision between the door and the door frame to deform the door body.

The key quality problem of the door closer is whether there is oil leakage because the door closer controls the closing process by throttling the fluid in its internal hydraulic system. The hydraulic system is the only standard to determine the service life of the door closer. The main reason for oil leakage is that the clearance increases due to the wear of pinion support guide, the sealing effect decreases due to the wear of sealing ring, or the flow valve core rotates counterclockwise to leave the valve body when adjusting the buffer effect.

The reduction of buffer effect of door closer is caused by the entry of air caused by oil leakage or the increase of fit clearance between rack plunger guide cylinder and valve body. Therefore, the material, heat treatment and machining quality and accuracy of pinion and support guide are very important.

Jianlai Hardware (HK) Co., Ltd has a long history in manufacturing door closers. It is wise of you to choose us as your Chinese partner. We can provide you with advanced production equipment and production line.