Compression spring D-318A Spring steel Ø 4 x 50 x 490 mm

Name: D-318A - Compression springs
SKU: D-318A
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	4	mm	Wire diameter
Di		mm	Inner coil diameter
D	50	mm	Mean coil diameter
De	54	mm	Outer coil diameter
Dd	44.8	mm	maximum diameter of mandrel
Dh	56.2	mm	minimum diameter of bush
L0	490	mm	unstressed spring length
Lk	429.22	mm	buckling length
Fn	335.592	N	maximum force in static use
Ln	128.09	mm	Minimum length in static use
sn	361.91	mm	Maximum spring deflection in static use
Fndyn	321.639	N	maximum force in dynamic use
Lndyn	143.14	mm	Minimum length in dynamic use
shdyn	189.92	mm	Maximum stroke in dynamic use
S	21.6	mm	pitch of spring
n	22.5	pc.	number of active coils
nt		pc.	total number of coils
R	0.927	N/mm	Spring rate
Weight	382.2753	g	weight of one spring
Fntol	18.24	N	(+/-) tolerance of maximum force in static use
Fndtol	18.03	N	(+/-) tolerance of maximum dynamic force
Detol	0.8	mm	(+/-) tolerances of outer coil diameter
L0tol	14.24	mm	(+/-) tolerance of unstressed spring length
Price group	AF	-	price group
F1tol		N	(+/-) tolerance of prestressed spring force
F2tol		N	(+/-) tolerance of loaded spring force