Compression spring D-308A Spring steel Ø 3.2 x 20 x 155 mm

Name: D-308A - Compression springs
SKU: D-308A
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	20	mm	Mean coil diameter
De	23.2	mm	Outer coil diameter
Dd	16.1	mm	maximum diameter of mandrel
Dh	24.2	mm	minimum diameter of bush
L0	155	mm	unstressed spring length
Lk	122.4	mm	buckling length
Fn	386.828	N	maximum force in static use
Ln	89.82	mm	Minimum length in static use
sn	65.18	mm	Maximum spring deflection in static use
Fndyn	352.934	N	maximum force in dynamic use
Lndyn	95.53	mm	Minimum length in dynamic use
shdyn	37.75	mm	Maximum stroke in dynamic use
S	6.747	mm	pitch of spring
n	22.5	pc.	number of active coils
nt		pc.	total number of coils
R	5.935	N/mm	Spring rate
Weight	97.8625	g	weight of one spring
Fntol	25.6	N	(+/-) tolerance of maximum force in static use
Fndtol	25.09	N	(+/-) tolerance of maximum dynamic force
Detol	0.35	mm	(+/-) tolerances of outer coil diameter
L0tol	3.34	mm	(+/-) tolerance of unstressed spring length
Price group	O	-	price group
F1tol		N	(+/-) tolerance of prestressed spring force
F2tol		N	(+/-) tolerance of loaded spring force