Compression spring D-302 Spring steel Ø 3.2 x 25 x 135 mm

Name: D-302 - Compression springs
SKU: D-302
Availability: InStock

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Formula symbols	Value	Unit	Description
Material	EN 10270-1	-	Type of material
Spring ends	Closed and ground	-	Spring ends
F1		N	prestressed spring force
L1		mm	Prestressed spring length
s1		mm	Prestressed spring deflection
F2		N	Loaded spring force
L2		mm	Loaded spring length
s2		mm	Loaded spring deflection
d	3.2	mm	Wire diameter
Di		mm	Inner coil diameter
D	25	mm	Mean coil diameter
De	28.2	mm	Outer coil diameter
Dd	21	mm	maximum diameter of mandrel
Dh	29.3	mm	minimum diameter of bush
L0	135	mm	unstressed spring length
Lk	56.15	mm	buckling length
Fn	442.679	N	maximum force in static use
Ln	54.06	mm	Minimum length in static use
sn	80.94	mm	Maximum spring deflection in static use
Fndyn	395.436	N	maximum force in dynamic use
Lndyn	62.7	mm	Minimum length in dynamic use
shdyn	27.35	mm	Maximum stroke in dynamic use
S	10.544	mm	pitch of spring
n	12.5	pc.	number of active coils
nt		pc.	total number of coils
R	5.469	N/mm	Spring rate
Weight	72.3983	g	weight of one spring
Fntol	20.91	N	(+/-) tolerance of maximum force in static use
Fndtol	20.6	N	(+/-) tolerance of maximum dynamic force
Detol	0.35	mm	(+/-) tolerances of outer coil diameter
L0tol	2.61	mm	(+/-) tolerance of unstressed spring length
Price group	N	-	price group
F1tol		N	(+/-) tolerance of prestressed spring force
F2tol		N	(+/-) tolerance of loaded spring force