Overhead door closer OTS 634
The overhead door closer OTS 634 is the ideal solution for single-leaf doors with leaf widths up to 1100 mm. With continuously adjustable closing force size EN 2-4 and individually adjustable valve functions such as closing speed, latching action, and opening damping, it ensures smooth and controlled closing—even in the event of temperature fluctuations. Its compact aluminium housing in the modern GU design combines functionality with durability. Optional mechanical hold-open devices and opening limiters are available, allowing the closer to be flexibly adapted to your requirements.
Modern door closers for standard and project solutions
Our door closers combine maximum functional reliability and durability with flexible adjustment options. They reliably ensure secure door closing, increase 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 in the event of 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 closing of doors significantly increases the energy efficiency of a building, as neither cold nor heat can penetrate.
Areas of application
- Single-leaf fire and smoke protection doors
- Door leaf width max. 1100 mm
- Suitable for DIN left and DIN right
- Maximum door opening and closing angle 180°
Installation types
- Standard installation on hinge side
- Head installation on hinge side
- Head installation on opposite hinge side
Technical data & standards
| Technical data | OTS 634 | |
|---|---|---|
| Application | ||
| Max. door leaf width [mm] | 1100 | |
| 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 | ||
| Mechanical hold-open device | optional | |
| Opening limiter | optional | |
Standards and safety requirements
Our OTS 634 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, ensuring 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.
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
