Closing spring Adjunkt D2a / D4
Closing spring with operating arm
Characteristics
- Simple and affordable closing device
- Apt for nearly every door
- Adjustable spring force
- Available with different spring forces
In addition to the closing spring Adjunkt D2a/Adjunkt D4, the use of a DICTATOR door damper is recommended so that the door is damped and closes gently and doesn’t slam shut.
Product details
Technical data
| Closing force | 10 - 50 Nm |
| Material | steel nickel-plated; stainless steel AISI 304 |
| Components included | closing spring; roller; tensioning pin |
Functioning
- The adjustable spring force is transferred to the door by an operating arm running on a small roller fixed to the door
- The spring arm can be folded up so that the function of the closing spring can be temporarily suspended and the door remains open
Types
- D2a: for light doors
- D4: for heavier doors
- Stainless steel models: for outside doors or doors in humid environments
D2a nickel-plated
D2a stainless steel
D4 nickel-plated
D4 stainless steel
Dimensions
All dimensions in mm
D2a closing spring
D4 closing spring
Installation
Installation notes
Fix the mounting bracket of the closing spring to the door frame with Ø 5 mm screws. On normal weight doors usually on the lower part of the door. The roller is then fixed to the door leaf. Please, be sure to keep to the dimensions shown, especially the distance between roller and mounting bracket.
To pretension the closing spring, insert the tensioning pin into one of the holes of the ring and turn it towards the operating arm. Then insert the small bolt into the hole closest to the operating arm. If the force is still not sufficient, repeat this procedure.
Installation instructions
Application pictures
Order information
Order Information
| Description | Part No. |
|---|---|
| D2a closing spring with operating arm, nickel-plated | 300300 |
| D2a closing spring with operating arm, stainless steel | 300308 |
| D4 closing spring with operating arm, nickel-plated | 300320 |
| D4 closing spring with operating arm, stainless steel | 300328 |
Downloads
| File Name | Type |
|---|---|
| Documents | |
| Catalog: D2a and D4 Closing Springs | |
| Installation Instructions Adjunkt D2a/D4 | |
| DWG Drawings | |
| DWG Adjunkt D2a, 300300_300308 | dwg |
| STEP Adjunkt D4, 300320_300328 | dwg |
| STEP Drawings | |
| STEP Adjunkt D2a, 300300_300308 | stp |
| STEP Adjunkt D4, 300320_300328 | stp |
