Compression spring D-278A Spring steel Ø 2.5 x 20 x 175 mm

Name: D-278A - Compression springs
SKU: D-278A
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	2.5	mm	Wire diameter
Di		mm	Inner coil diameter
D	20	mm	Mean coil diameter
De	22.5	mm	Outer coil diameter
Dd	16.8	mm	maximum diameter of mandrel
Dh	23.3	mm	minimum diameter of bush
L0	175	mm	unstressed spring length
Lk	147.1	mm	buckling length
Fn	227.107	N	maximum force in static use
Ln	72.28	mm	Minimum length in static use
sn	102.73	mm	Maximum spring deflection in static use
Fndyn	214.893	N	maximum force in dynamic use
Lndyn	77.8	mm	Minimum length in dynamic use
shdyn	46.47	mm	Maximum stroke in dynamic use
S	7.667	mm	pitch of spring
n	22.5	pc.	number of active coils
nt		pc.	total number of coils
R	2.211	N/mm	Spring rate
Weight	59.7305	g	weight of one spring
Fntol	11.93	N	(+/-) tolerance of maximum force in static use
Fndtol	11.75	N	(+/-) tolerance of maximum dynamic force
Detol	0.35	mm	(+/-) tolerances of outer coil diameter
L0tol	3.86	mm	(+/-) tolerance of unstressed spring length
Price group	L	-	price group
F1tol		N	(+/-) tolerance of prestressed spring force
F2tol		N	(+/-) tolerance of loaded spring force