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Tension Springs - Configurable Lengths (Part Numbers)

Spec Expansion

MISUMI

•Type: Standard Type
For complete product overview and details on Tension Springs - Configurable Lengths see the sections below:

inCAD Components

(i)Caution

Please check the content on our website as the PDF does not contain the most up-to-date information.

Part Number

Configured Part Number is shown.

Extension Springs - Configurable Lengths:Related Image

Type	[ M ]Material
WFSP	Spring Steel (ASTM A228)
UFSP	304 Stainless Steel

Type	[ M ]Material
BWFSP	Spring Steel (ASTM A228)
BUFSP	304 Stainless Steel

Specifications

Part Number	-	d	-	S
WFSP3 UFSP20	- -	0.3 2.6	- -	10 498

[ ! ]Maximum deflection factor is a numerical value for static loads.
When applying a dynamic load, use the maximum deflection factor × 0.65.
[ ! ]For the maximum deflection, the Web specifications show a percentage, and the catalog PDF shows the value when the S dimension is 50.
Both values give the same result when used.
[ ! ]For the standard spring constant, the Web specifications show a value where the S dimension is 10,and the catalog PDF shows the value when the S dimension is 50.

Part Number		Wire Dia. d mm	S 1mm Increment	Maximum deflection factor (S) ％		Standard Spring Constant (When S = 10) N/mm		Initial Tension N


Type	D			WFSP	UFSP	WFSP	UFSP	WFSP	UFSP
Type	D			BWFSP	BUFSP	BWFSP	BUFSP	BWFSP	BUFSP
WFSP UFSP BWFSP BUFSP	3	0.3	10〜300	176%	174%	0.13	0.11	0.18	0.21
	3	0.4		82%	84%	0.60	0.50	0.53	0.64
	4	0.4		172%	174%	0.20	0.20	0.31	0.38
	4	0.5		96%	92%	0.75	0.65	0.77	0.92
	5	0.5	10〜500	168%	164%	0.35	0.30	0.49	0.59
	5	0.6		100%	102%	0.90	0.80	1.01	1.21
	6	0.6		158%	164%	0.50	0.45	0.71	0.85
	6	0.8		72%	72%	2.35	2.05	2.13	2.55
	7	0.7		140%	132%	0.65	0.60	0.96	1.15
	7	0.9		70%	64%	2.60	2.25	2.94	3.5
	8	0.8		148%	152%	0.90	0.80	1.26	1.51
	8	1		82%	84%	2.90	2.55	3.04	4.26
	9	1	10〜550	112%	114%	1.95	1.70	2.45	3.43
	9	1.2		66%	66%	5.25	4.65	4.41	6.17
	10	1		148%	140%	1.35	1.20	1.96	2.74
		1.2		88%	86%	3.65	3.25	4.31	6.03
		1.4		58%	56%	8.50	7.50	7.64	10.7
	11	1		160%	152%	1.00	0.85	1.45	2.01
		1.2		92%	90%	2.65	2.35	3.24	4.51
		1.4		62%	60%	6.20	5.40	6.39	8.87
	12	1		232%	226%	0.75	0.65	1.18	1.65
		1.2		142%	140%	1.95	1.75	2.84	3.98
		1.4		92%	92%	4.55	4.00	5.39	7.55
		1.6		62%	60%	9.40	8.30	8.72	12.21
	13	1		240%	234%	0.55	0.50	0.93	1.29
		1.2		144%	142%	1.55	1.35	2.17	3.01
		1.4		94%	94%	3.50	3.05	3.95	5.49
		1.6		64%	62%	7.10	6.20	7.75	10.76
	14	1.2		208%	192%	1.20	1.05	2.06	2.88
		1.4		138%	130%	2.70	2.40	3.82	5.35
		1.6		94%	90%	5.55	4.90	6.66	9.32
		1.8		68%	66%	10.50	9.30	10.6	14.84
	15	1.2		212%	196%	0.95	0.85	1.5	2.09
		1.4		140%	132%	2.15	1.90	3.03	4.21
		1.6		96%	92%	4.40	3.80	4.74	6.59
		1.8		70%	68%	8.45	7.35	9.25	12.85
	16	1.4		192%	182%	1.75	1.55	3.04	4.26
		1.6		132%	130%	3.55	3.15	5.1	7.14
		1.8		96%	94%	6.65	5.90	8.33	11.66
		2		68%	70%	11.85	10.50	12.6	17.64
	17	1.4		194%	184%	1.45	1.25	2.21	3.08
		1.6		134%	132%	2.90	2.50	4.03	5.6
		1.8		98%	96%	5.55	4.85	6.74	9.37
		2		70%	72%	9.90	8.65	10.9	15.13
	18	1.6		176%	174%	2.40	2.10	4.02	5.63
		1.8		128%	128%	4.50	4.00	6.47	9.06
		2		94%	96%	7.95	7.00	10	14
		2.3		62%	60%	17.00	15.05	18.7	26.18
	20	1.8		168%	156%	3.15	2.80	5.1	7.14
		2		122%	120%	5.55	4.95	7.94	11.12
		2.3		82%	80%	11.85	10.50	15.2	21.28
		2.6		58%	58%	23.20	20.50	23.6	33.04
	22	2		150%	148%	4.05	3.60	7.35	10.3
		2.3		106%	104%	8.60	7.60	11.8	16.5
		2.6		74%	74%	16.75	14.80	19.6	27.4
		2.9		54%	54%	30.45	26.95	33.3	46.6
	25	2.3		144%	144%	5.60	4.95	9.8	13.7
		2.6		100%	104%	10.85	9.60	15.7	22
		2.9		76%	72%	19.65	17.40	22.5	31.5
		3.2		56%	54%	33.75	29.85	34.3	48
	28	2.6		138%	128%	7.45	6.60	12.7	17.8
		2.9		102%	98%	13.45	11.90	17.6	24.6
		3.2		78%	74%	22.90	20.25	27.4	38.4
		3.5		62%	58%	37.45	33.10	39.2	54.9

■Accuracy Standards
· D Dimension Tolerance

D/d*¹	Tolerance
8 or Less	±1.5% of D dimension (Min. ±0.2mm)
8~20	±2% of D dimension (Min. ±0.3mm)

*1 D/d = Spring Index
· S Dimension Tolerance
When d≤0.5, ±2x Wire Dia.
(Ex: When d=0.3, ±0.6)
When d≥0.6, ±Wire Dia.
(Ex: When d=1.0, ±1.0)

• Calculate the maximum deflection and spring constant using the following formula.
• Maximum deflection Maximum deflection (mm) = S × maximum deflection factor (%)	• Spring constant(reference value) Spring constant (N/mm) ＝ reference spring constant × 10/S

Example) Calculation of maximum deflection and spring constant of UFSP20-2.6-498

Maximum deflection(mm) = 498×58% = 288.84	Spring constant(N/mm) = 20.50 ×	10	= 0.41
		498

[ ! ]For the maximum deflection, the Web specifications show a percentage, and the catalog PDF shows the value when the S dimension is 50.
Both values give the same result when used.
[ ! ]For the standard spring constant, the Web specifications show a value where the S dimension is 10,and the catalog PDF shows the value when the S dimension is 50.

Part Number

CAD Data download and 3D preview are not available because the part number has not yet been determined.

*In order to open the CAD Data download and 3D preview screen, the part number must be fixed.
Please confirm the part number from "Specification / Dimension"on the left side, and then perform the CAD Data Download / 3D Preview operation.

CAD Download

: 30; 60; 90

Part Number
BUFSP3-0.3-[10-300/1]
BUFSP3-0.4-[10-300/1]
BUFSP4-0.4-[10-300/1]
BUFSP4-0.5-[10-300/1]
BUFSP5-0.5-[10-500/1]
BUFSP5-0.6-[10-500/1]
BUFSP6-0.6-[10-500/1]
BUFSP6-0.8-[10-500/1]
BUFSP7-0.7-[10-550/1]
BUFSP7-0.9-[10-550/1]
BUFSP8-0.8-[10-500/1]
BUFSP8-1.0-[10-500/1]
BUFSP9-1.0-[10-550/1]
BUFSP9-1.2-[10-550/1]
BUFSP10-1.0-[10-550/1]
BUFSP10-1.2-[10-550/1]
BUFSP10-1.4-[10-550/1]
BUFSP11-1.0-[10-550/1]
BUFSP11-1.2-[10-550/1]
BUFSP11-1.4-[10-550/1]
BUFSP12-1.0-[10-550/1]
BUFSP12-1.2-[10-550/1]
BUFSP12-1.4-[10-550/1]
BUFSP12-1.6-[10-550/1]
BUFSP13-1.0-[10-550/1]
BUFSP13-1.2-[10-550/1]
BUFSP13-1.4-[10-550/1]
BUFSP13-1.6-[10-550/1]
BUFSP14-1.2-[10-550/1]
BUFSP14-1.4-[10-550/1]
BUFSP14-1.6-[10-550/1]
BUFSP14-1.8-[10-550/1]
BUFSP15-1.2-[10-550/1]
BUFSP15-1.4-[10-550/1]
BUFSP15-1.6-[10-550/1]
BUFSP15-1.8-[10-550/1]
BUFSP16-1.4-[10-550/1]
BUFSP16-1.6-[10-550/1]
BUFSP16-1.8-[10-550/1]
BUFSP16-2.0-[10-550/1]
BUFSP17-1.4-[10-550/1]
BUFSP17-1.6-[10-550/1]
BUFSP17-1.8-[10-550/1]
BUFSP17-2.0-[10-550/1]
BUFSP18-1.6-[10-550/1]
BUFSP18-1.8-[10-550/1]
BUFSP18-2.0-[10-550/1]
BUFSP18-2.3-[10-550/1]
BUFSP20-1.8-[10-550/1]
BUFSP20-2.0-[10-550/1]
BUFSP20-2.3-[10-550/1]
BUFSP20-2.6-[10-550/1]
BUFSP22-2.0-[10-550/1]
BUFSP22-2.3-[10-550/1]
BUFSP22-2.6-[10-550/1]
BUFSP22-2.9-[10-550/1]
BUFSP25-2.3-[10-550/1]
BUFSP25-2.6-[10-550/1]
BUFSP25-2.9-[10-550/1]
BUFSP25-3.2-[10-550/1]
BUFSP28-2.6-[10-550/1]
BUFSP28-2.9-[10-550/1]
BUFSP28-3.2-[10-550/1]
BUFSP28-3.5-[10-550/1]
BWFSP3-0.3-[10-300/1]
BWFSP3-0.4-[10-300/1]
BWFSP4-0.4-[10-300/1]
BWFSP4-0.5-[10-300/1]
BWFSP5-0.5-[10-500/1]
BWFSP5-0.6-[10-500/1]
BWFSP6-0.6-[10-500/1]
BWFSP6-0.8-[10-500/1]
BWFSP7-0.7-[10-550/1]
BWFSP7-0.9-[10-550/1]
BWFSP8-0.8-[10-500/1]
BWFSP8-1.0-[10-500/1]
BWFSP9-1.0-[10-550/1]
BWFSP9-1.2-[10-550/1]
BWFSP10-1.0-[10-550/1]
BWFSP10-1.2-[10-550/1]
BWFSP10-1.4-[10-550/1]
BWFSP11-1.0-[10-550/1]
BWFSP11-1.2-[10-550/1]
BWFSP11-1.4-[10-550/1]
BWFSP12-1.0-[10-550/1]
BWFSP12-1.2-[10-550/1]
BWFSP12-1.4-[10-550/1]
BWFSP12-1.6-[10-550/1]
BWFSP13-1.0-[10-550/1]
BWFSP13-1.2-[10-550/1]

Minimum order quantity	Days to Ship	RoHS	Material	Hook Opposing Angle	O.D. D (Ø)	Initial Tension (N)	Standard Spring Constant (N/mm)	Wire diameter (Ø)	S (mm)
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	3	0.21	0.11	0.3	10 ～ 300
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	3	0.64	0.5	0.4	10 ～ 300
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	4	0.38	0.2	0.4	10 ～ 300
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	4	0.92	0.65	0.5	10 ～ 300
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	5	0.59	0.3	0.5	10 ～ 500
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	5	1.21	0.8	0.6	10 ～ 500
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	6	0.85	0.45	0.6	10 ～ 500
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	6	2.55	2.05	0.8	10 ～ 500
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	7	1.15	0.6	0.7	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	7	3.50	2.25	0.9	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	8	1.51	0.8	0.8	10 ～ 500
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	8	4.26	2.55	1	10 ～ 500
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	9	3.43	1.7	1	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	9	6.17	4.65	1.2	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	10	2.74	1.2	1	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	10	6.03	3.25	1.2	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	10	10.70	7.5	1.4	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	11	2.01	0.85	1	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	11	4.51	2.35	1.2	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	11	8.87	5.4	1.4	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	12	1.65	0.65	1	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	12	3.98	1.75	1.2	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	12	7.55	4	1.4	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	12	12.21	8.3	1.6	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	13	1.29	0.5	1	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	13	3.01	1.35	1.2	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	13	5.49	3.05	1.4	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	13	10.76	6.2	1.6	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	14	2.88	1.05	1.2	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	14	5.35	2.4	1.4	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	14	9.32	4.9	1.6	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	14	14.84	9.3	1.8	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	15	2.09	0.85	1.2	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	15	4.21	1.9	1.4	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	15	6.59	3.8	1.6	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	15	12.85	7.35	1.8	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	16	4.26	1.55	1.4	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	16	7.14	3.15	1.6	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	16	11.66	5.9	1.8	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	16	17.64	10.5	2	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	17	3.08	1.25	1.4	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	17	5.60	2.5	1.6	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	17	9.37	4.85	1.8	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	17	15.13	8.65	2	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	18	5.63	2.1	1.6	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	18	9.06	4	1.8	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	18	14	7	2	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	18	26.18	15.05	2.3	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	20	7.14	2.8	1.8	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	20	11.12	4.95	2	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	20	21.28	10.5	2.3	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	20	33.04	20.5	2.6	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	22	10.3	3.6	2	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	22	16.5	7.6	2.3	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	22	27.4	14.8	2.6	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	22	46.6	26.95	2.9	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	25	13.70	4.95	2.3	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	25	22.00	9.6	2.6	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	25	31.50	17.4	2.9	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	25	48.00	29.85	3.2	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	28	17.80	6.6	2.6	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	28	24.6	11.9	2.9	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	28	38.40	20.25	3.2	10 ～ 550
1 Piece(s)	10 Days or more	10	Stainless Steel (SUS304-WPB)	90°	28	54.90	33.1	3.5	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	3	0.18	0.13	0.3	10 ～ 300
1 Piece(s)	10 Days or more	10	SWP-A	90°	3	0.53	0.6	0.4	10 ～ 300
1 Piece(s)	10 Days or more	10	SWP-A	90°	4	0.31	0.2	0.4	10 ～ 300
1 Piece(s)	10 Days or more	10	SWP-A	90°	4	0.77	0.75	0.5	10 ～ 300
1 Piece(s)	10 Days or more	10	SWP-A	90°	5	0.49	0.35	0.5	10 ～ 500
1 Piece(s)	10 Days or more	10	SWP-A	90°	5	1.01	0.9	0.6	10 ～ 500
1 Piece(s)	10 Days or more	10	SWP-A	90°	6	0.71	0.5	0.6	10 ～ 500
1 Piece(s)	10 Days or more	10	SWP-A	90°	6	2.13	2.35	0.8	10 ～ 500
1 Piece(s)	10 Days or more	10	SWP-A	90°	7	0.96	0.65	0.7	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	7	2.94	2.6	0.9	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	8	1.26	0.9	0.8	10 ～ 500
1 Piece(s)	10 Days or more	10	SWP-A	90°	8	3.04	2.9	1	10 ～ 500
1 Piece(s)	10 Days or more	10	SWP-A	90°	9	2.45	1.95	1	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	9	4.41	5.25	1.2	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	10	1.96	1.35	1	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	10	4.31	3.65	1.2	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	10	7.64	8.5	1.4	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	11	1.45	1	1	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	11	3.24	2.65	1.2	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	11	6.39	6.2	1.4	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	12	1.18	0.75	1	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	12	2.84	1.95	1.2	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	12	5.39	4.55	1.4	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	12	8.72	9.4	1.6	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	13	0.93	0.55	1	10 ～ 550
1 Piece(s)	10 Days or more	10	SWP-A	90°	13	2.17	1.55	1.2	10 ～ 550

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Basic Information

Type	Standard Type

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256 Part Numbers

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Completed

Specification/Dimensions

Material
- Stainless Steel (SUS304-WPB)
- SWP-A
Clear
Hook Opposing Angle
- 180°
- 90°
Clear
O.D. D(Ø)
3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

20

22

25

28
Clear
Initial Tension(N)
0.18

0.21

0.31

0.38

0.49

0.53

0.59

0.64

0.71

0.77

0.85

0.92

0.93

0.96

1.01

1.15

1.18

1.21

1.26

1.29

1.45

1.50

1.51

1.65

1.96

2.01

2.06

2.09

2.13

2.17

2.21

2.45

2.55

2.74

2.84

2.88

2.94

3.01

3.03

3.04

3.08

3.24

3.43

3.50

3.82

3.95

3.98

4.02

4.03

4.21

4.26

4.31

4.41

4.51

4.74

5.1

5.35

5.39

5.49

5.60

5.63

6.03

6.17

6.39

6.47

6.59

6.66

6.74

7.14

7.35

7.55

7.64

7.75

7.94

8.33

8.72

8.87

9.06

9.25

9.32

9.37

9.80

10.00

10.3

10.6

10.70

10.76

10.90

11.12

11.66

11.8

12.21

12.6

12.70

12.85

13.70

14

14.84

15.13

15.20

15.70

16.5

17.60

17.64

17.80

18.7

19.60

21.28

22.00

22.50

23.60

24.6

26.18

27.4

31.50

33.04

33.30

34.3

38.40

39.20

46.6

48.00

54.90
Clear
Standard Spring Constant(N/mm)
0.11

0.13

0.2

0.3

0.35

0.45

0.5

0.55

0.6

0.65

0.75

0.8

0.85

0.9

0.95

1

1.05

1.2

1.25

1.35

1.45

1.55

1.7

1.75

1.9

1.95

2.05

2.1

2.15

2.25

2.35

2.4

2.5

2.55

2.6

2.65

2.7

2.8

2.9

3.05

3.15

3.25

3.5

3.55

3.6

3.65

3.8

4

4.05

4.4

4.5

4.55

4.65

4.85

4.9

4.95

5.25

5.4

5.55

5.6

5.9

6.2

6.6

6.65

7

7.1

7.35

7.45

7.5

7.6

7.95

8.3

8.45

8.5

8.6

8.65

9.3

9.4

9.6

9.9

10.5

10.85

11.85

11.9

13.45

14.8

15.05

16.75

17

17.4

19.65

20.25

20.5

22.9

23.2

26.95

29.85

30.45

33.1

33.75

37.45
Clear
Wire diameter(Ø)
0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

1.2

1.4

1.6

1.8

2

2.3

2.6

2.9

3.2

3.5
Clear
S(mm)
[10-550/1mm Unit(s)]
Clear
type
- BUFSP
- BWFSP
- UFSP
- WFSP
Clear
CAD
- 2D
- 3D
Clear