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Material

EN 10270-1

Spring ends

Closed and ground

d

2.9 mm

Wire diameter

D

16.5 mm

Mean coil diameter

De

19.4 mm

Outer coil diameter

Dd

12.9 mm

maximum diameter of mandrel

Dh

20.4 mm

minimum diameter of bush

L0

32 mm

unstressed spring length

Fn

538.948 N

maximum force in static use

Ln

19.4 mm

Minimum length in static use

sn

12.6 mm

Maximum spring deflection in static use

Fndyn

421.321 N

maximum force in dynamic use

Lndyn

22.15 mm

Minimum length in dynamic use

shdyn

3.76 mm

Maximum stroke in dynamic use

S

7.76 mm

pitch of spring

n

3.75 pc.

number of active coils

R

42.774 N/mm

Spring rate

Weight

15.5621 g

weight of one spring

Fntol

37.65 N

(+/-) tolerance of maximum force in static use

Fndtol

35.13 N

(+/-) tolerance of maximum dynamic force

Detol

0.35 mm

(+/-) tolerances of outer coil diameter

L0tol

0.65 mm

(+/-) tolerance of unstressed spring length