The closer features adjustable latching and closing speeds and a 180 opening range.
Arm type door closer.
This type of door closer is referred to as a tail spring 28 and is one of the more simple mechanisms having no damping control.
The closer body is mounted.
The most common arms are the regular arm and parallel arm.
With this mounting type the closer is mounted on the door and the arm is perpendicular to the frame.
The top jamb mounting can be used on a door with a smaller top rail than a parallel arm closer but the perpendicular arm may be problematic in locations prone to vandalism.
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The arm tail rests against the door and a spring that is twisted by the user opening the door closes the door by returning to its pre twisted shape.
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Door closers with a regular arm will be mounted on the pull side of the opening.
A regular arm closer is mounted on the pull side of the door.
Parallel arm door closers are mounted on the push side of the opening.
Commercial door closers are effective at controlling the opening and a lot of the functionality comes from the arm attached to the closer.
The main function of the arm is to turn the pinion.