Details of In-Stock Tension Springs

All in-stock tension springs are right-wound and manufactured according to DIN 2097 quality grade 2. Calculations were carried out according to DIN 2089 part 2. All tension springs are thermically relaxed after the coiling and looping process. The loops are full German loops according to DIN 2097 image 3. The loop position is either 180° or 270°. All loops are closed. Nach dem Winden + Ösen werden alle Zugfedern thermisch entspannt. Die Ösen haben die Ösenform ganze deutsche Öse nach DIN 2097 Bild 3. Die Ösenstellung beträgt wahlweise 180° oder 270°. Die Ösen sind geschlossen. The specified forces and spring deflections apply under static or quasi-static conditions only.

Manufacturing Compensation
The outer diameter De, the length Lo and the maximum load Fn are tolerated by our standard springs. In order to be able to meet these tolerance, we reserve the right to compensate using d (wire diameter) or Fo (initial tension).

Springs are manufactured from patented drawn spring steel wire in accordance with EN 10270-1-SH / DH. Spring steel EN 10270-3-1.4310 is used for the stainless steel version. The tolerances for wire diameter deviation are in accordance with DIN 2076.

Springs manufactured from steel wire in accordance with DIN 17223 part 1 are lightly oiled after heat treatment. Springs manufactured from 1.4310 stainless steel are cleaned before heat treatment.

Surface Finishing
All items are available with the following surface coatings on request: zinc-plated, nickel-plated, tin-plated, silver-plated, gold-plated, gliss-coat, plastic, Deltatone, Deltaseal, Deltamagni and other common surface finishes.

Shot Blasting
To achieve higher durability, we can also offer our standard springs in blasted versions. We use two separate blasting shots: steel balls for spring steel in accordance with DIN 17223; and stainless steel balls or glass beads for stainless spring steel in accordance with EN 17224.

We offer teh following packaging systems to facilitate easy handling and processing and to provide protection against damage and soiling:

Non-returnable Packaging:
Plastic bag with counted quantity for easy removal
Fixed to adhesive strips for easy removal

Returnable packaging
Plastic tube suitable for automatic feeding
Honeycomb packaging for easy removal, suitable for protection against damage and soiling
Plastic partition box with cover, suitable for automatic removal, protection against damage and soiling.