Here is an overview of the different eyelet shapes for Extension springs after DIN EN 13906-2: 2013 with the respective loop properties. Extension springs should only be subjected to static loads. If higher loads are planned, bent eyelets should be avoided and rolled or screwed-in end pieces should be used. Is useful at more stressed extension springs also a life test under real operating conditions.

With the respective Loop properties please note the dimensions, for example the 1/1 German eyelet the value Lh (Distance between the inner edge of the eyelet and the spring body) only between 0.8 and 1.1 Tuesday (inner coil diameter). In addition, with the specification m the eyelet opening width can be specified.

Extension springs Oesenform Description of formula

 

1/1 German eyelet
Additional information: Lh and m
(Lh = 0.8 to 1.1 Di)
1/1 German loop
1/1 double German eyelet
Additional information: Lh
(Lh = 0.8 to 1.1 Di)
1/1 double German loop
1/1 German eyelet raised at the side
Additional information: m
(Lh ~ Di)
1/1 German side loop
1/1 double German eyelet raised on the side
Additional information: None
(Lh ~ Di)
1/1 double German side loop
1/1 German eyelet raised at an angle
Additional information: m
1/1 German loop inclined extended
1/2 German eyelet
Additional information: Lh and m
(Lh = 0.55 to 0.8 Di)
1/2 German loop
English eyelet
Additional information: m
(Lh ~ 1.1 Di)
English loop
Hook eye
Additional information: Lh and m
Hook
Hook eye raised at the side
Additional information: Lh and m
Extended side hook
Hook rolled up
Additional information: Drawing !
Coiled-in hook
Threaded bolt rolled
Additional information: Drawing !
Screwed plug
Threaded plug screwed in
Additional information: Drawing !
Screwed
Screw-in screw tab
Additional information: Drawing !
Screwed-in shackle
Eyelet shapes extension springs