Overhead door closer OTS 634x
The overhead door closers of the OTS 634x series are specially designed for double-leaf doors with total leaf widths up to 2200 mm and can be optimally combined with the sliding rail sets of the OTS 73x series. The OTS 634x is tested and certified according to EN 1154 and impresses with its continuously adjustable closing force size EN 2-4 (side adjustment) as well as front-adjustable valve functions for closing speed, latching action, and opening damping. Thermomatic valves ensure consistent closing performance under temperature fluctuations, while integrated safety valves protect against overload. With an opening angle of up to 180°, the compact door closer in modern GU design guarantees controlled closing from any angle.
Modern door closers for standard and project solutions
Our door closers combine maximum functional reliability and durability with flexible adjustment options. They ensure reliable and secure door closing, enhance fire protection and burglary resistance, and contribute significantly to the energy efficiency of buildings by ensuring tightly closing doors.
Fire protection
Secure closing of doors effectively prevents the spread of fire and smoke within the building.
Functional reliability
Thermomatic valves ensure consistent closing performance under temperature fluctuations, while integrated safety valves in the closer provide protection against overload and vandalism.
Flexibility
Various adjustment options and installation types provide high flexibility and allow optimal adaptation to different door situations.
Energy efficiency
Consistently secure door closing significantly increases a building's energy efficiency, as neither cold nor heat can penetrate.
Areas of application
- Double-leaf fire and smoke protection doors
- Total leaf width max. 2200 mm
- Suitable for DIN left and DIN right
- Maximum door opening and closing angle 180°
Installation types
- Standard installation on hinge side
Technical data & standards
| Technical data | OTS 634x | |
|---|---|---|
| Application | ||
| Max. door leaf width [mm] | 2200 | |
| Max. door opening angle | 180° | |
| Approved for use on fire doors | x | |
| Suitable for barrier-free construction according to DIN 18040 | x | |
| Dimensions | ||
| L x H x D [mm] | 296 × 60 × 49 | |
| Adjustment functions | ||
| Closing force according to EN 1154 | 2–4 | |
| Closing speed | x | |
| Latching action | x | |
| Opening damping | x | |
| Accessories | ||
| Hold-open device electromechanical | optional | |
| Hold-open device mechanical | optional | |
| Opening limiter | optional | |
Standards and safety requirements
Our OTS 634x door closers meet the highest standards: they are ideal for barrier-free construction according to DIN 18040, approved for fire doors, and tested according to EN 1154, EN 1155, and EN 1158 – for maximum safety and comfort.
door closing device with controlled closing sequence
DIN EN 1154 refers to door closing devices with controlled closing action. This standard specifies the requirements and test methods for door closers used on swing doors to ensure that they can reliably close again after opening. The classification of door closers according to this standard is based on criteria such as application class, durability, door closer size, and suitability for fire and smoke protection doors.
Electrically operated hold-open devices for turn-leaf doors
The standard EN 1155 refers to electrically operated hold-open devices for Turn-Only doors. These devices allow doors to be held in an open position and to close automatically when required, for example in the event of fire or smoke. The standard defines the requirements and test methods for these devices to ensure their functionality and safety.
Closing sequence controller – requirements and test method
The EN 1158 standard refers to closing sequence controllers for double-leaf hinged doors. These controllers ensure that the two door leaves close in the correct order to provide effective sealing, especially for fire and smoke protection doors. The standard specifies test requirements and conditions and covers both separately mounted closing sequence controllers and those integrated into the door closer, which may be equipped with electrically operated hold-open devices.
barrier-free construction
The DIN 18040 standard deals with the planning principles for barrier-free construction. It is divided into different parts that cover various aspects of construction to enable people with disabilities, elderly persons, and children to participate equally in everyday life. An important aspect of this standard is the easy opening of doors without external assistance. In this context, requirements are placed on door closers, such as limiting the operating forces to ensure that doors are easily accessible.
suitability for fire protection
Approved for use on fire and smoke protection doors
CE marking
The CE marking is a symbol affixed to a product, indicating its conformity with the essential requirements of the relevant European directives. It shows that the product has been assessed regarding safety, health protection, and environmental protection, and can be freely traded within the European Economic Area (EEA).Sliding rail sets
The door closers of the OTS 634x series can be combined with the following sets from the OTS 73x series.
