Compression spring D-389K Spring steel Ø 7 x 43 x 62.3 mm

Name: D-389K - Compression springs
SKU: D-389K
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	7	mm	Wire diameter
Di		mm	Inner coil diameter
D	43	mm	Mean coil diameter
De	50	mm	Outer coil diameter
Dd	34.8	mm	maximum diameter of mandrel
Dh	51.4	mm	minimum diameter of bush
L0	62.3	mm	unstressed spring length
Lk		mm	buckling length
Fn	1754.76	N	maximum force in static use
Ln	42.34	mm	Minimum length in static use
sn	19.96	mm	Maximum spring deflection in static use
Fndyn	1585.707	N	maximum force in dynamic use
Lndyn	44.26	mm	Minimum length in dynamic use
shdyn	10.21	mm	Maximum stroke in dynamic use
S	15.8	mm	pitch of spring
n	3.5	pc.	number of active coils
nt		pc.	total number of coils
R	87.899	N/mm	Spring rate
Weight	226.0203	g	weight of one spring
Fntol	135	N	(+/-) tolerance of maximum force in static use
Fndtol	133	N	(+/-) tolerance of maximum dynamic force
Detol	0.6	mm	(+/-) tolerances of outer coil diameter
L0tol	1.24	mm	(+/-) tolerance of unstressed spring length
Price group	AH	-	price group
F1tol		N	(+/-) tolerance of prestressed spring force
F2tol		N	(+/-) tolerance of loaded spring force