Key

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  • De=outside diameter (mm)
  • Di=inside diameter (mm)
  • Hi=internal height (mm)
  • Ht=total height (mm)
  • h=straight flange lenght (mm)
  • r=knuckle radius (mm)
  • R=crown radius (mm)
  • S=thickness before forming (mm)
  • s=minimum thickness after forming
  • d=hole

Ellipsoidal Head 1,9:1 NF-E81-103 with Hole

COD. 0092
Ellipsoidal Head 1,9:1 NF-E81-103 with Hole, Sifea srl Ellipsoidal Head 1,9:1 NF-E81-103 with Hole, Sifea srl
Ht = S+Di/3,8~+h
(Ht before cutting of the hole)
De R r h* S
Fond Ellitique ELL (NF E 81-103) Max. 8000 0,86De 0,185De on request 2,5 ÷ 60
* on request depending on De and thickness
Every request will be subject to a feasibility study. Depending on the required characteristics (dimensions, material, thickness) S.I.F.E.A. might propose different workings and cold or hot forming. If a dimension has a value out of indicated ranges, please do not hesitate to contact S.I.F.E.A. for a specific evaluation.