Round Wire Coil Springs, Defection I.D. Referenced, Stainless Steel, Heavy Load

♢When purchasing of Round Wire Springs, please note that this spring is the inner diameter standard type, manufactured with priority to the inner diameter tolerance, and suitable for shaft installation occasions.
♢Stainless steel springs are also magnetic. Please be careful.
 

 

Inner Diameter D	φ8 or Less		Free Length L	50 or Less	±1mm
	φAbove 10			Above 60	±2mm
Material of Round Wire Springs
Material SUS304-WPB Spring Constant ±10%

C-VUL: Fmax. (allowable displacement) = L×40%
The inner diameter standard type gives priority to guaranteeing the inner diameter, while the outer diameter is for reference only.

Type	Coil O.D. D - Free Length L		Outer Diameter D1	Wire Diameter d	F max.	N{kgf} max.		Reference
								Pitch	Solid Length	Total Number of Rolls
C-VUL	5 －	15	6.2	0.6	6	5.88	{0.60}	2.5	4.8	7
		20			8	7.84	{0.80}	3.3
		25	6.4	0.7	10	9.80	{1.00}	2.3	9.1	12
	6 －	15	7.4	0.7	6	5.88	{0.60}	2.1	6.3	8
		20			8	7.84	{0.80}	2.9
		25	7.6	0.8	10	9.80	{1.00}	2.3	10.4	12
		30			12	11.76	{1.20}	2.7
		35			14	13.72	{1.40}	3.2
		40	7.8	0.9	16	15.68	{1.60}	2.5	16.2	17
	8 －	20	9.8	0.9	8	7.84	{0.80}	2.4	9.5	9.5
		25			10	9.80	{1.00}	2.9
		30	10.0	1.0	12	11.76	{1.20}	2.5	14.0	13
		35	10.0	1.0	14	13.72	{1.40}	2.9	14.0	13
		60	10.4	1.2	24	23.52	{2.40}	2.7	28.8	23
	10 －	20	12.0	1.0	8	7.84	{0.80}	3.1	8.5	7.5
		25			10	9.80	{1.00}	3.8
		30	12.2	1.1	12	11.76	{1.20}	3.2	12.7	10.5
		35			14	13.72	{1.40}	3.7
		40	12.2	1.1	16	15.68	{1.60}	4.2	12.7	10.5
	12 －	25	14.4	1.2	10	9.80	{1.00}	2.9	12.6	9.5
		35			14	13.72	{1.40}	4.1
		55	14.8	1.4	22	21.56	{2.20}	4.1	21.7	14.5
	16   -	50	19.0	1.5	20	19.60	{2.00}	5.9	15.8	9.5

C-VUM: Fmax. (allowable displacement) = L×35%
The inner diameter standard type gives priority to guaranteeing the inner diameter, while the outer diameter is for reference only.

Type	Coil O.D. D - Free Length L		Outer Diameter D1	Wire Diameter d	F max.	N{kgf} max.		Reference
								Pitch	Solid Length	Total Number of Rolls
C-VUM	5 －	15	6.6	0.8	5.3	15.39	{1.57}	2.3	6.8	7.5
		20	6.8	0.9	7.0	20.58	{2.10}	1.8	11.7	12
		40	7.0	1.0	14.0	41.16	{4.20}	3.2	14.5	13.5
	6 －	15	7.8	0.9	5.3	15.39	{1.57}	2.3	7.7	7.5
		20			7.0	20.58	{2.10}	3.0
		25	8.0	1.0	8.8	25.68	{2.62}	2.8	11	10
		30			10.5	30.87	{3.15}	3.3
	8 －	20	10.2	1.1	7.0	20.58	{2.10}	3.3	8.8	7
		25			8.8	25.68	{2.62}	4.2
		30	10.2	1.1	10.5	30.87	{3.15}	5.0	8.8	7
		35	10.6	1.3	12.3	35.97	{3.67}	3.5	15.6	11
		40	10.6	1.3	14.0	41.16	{4.20}	4.0	15.6	11
	10 －	20	12.4	1.2	7.0	20.58	{2.10}	4.0	8.4	6
		25	12.6	1.3	8.8	25.68	{2.62}	4.2	10.4	7
		30			10.5	30.87	{3.15}	5.0
		40	13	1.5	14.0	41.16	{4.20}	3.8	18.8	11.5
	12 －	25	14.8	1.4	8.8	25.68	{2.62}	5.0	9.8	6
	16 －	35	19.6	1.8	12.3	35.97	{3.67}	5.8	14.4	7

Calculation method of laps (reference value):Total number of laps = solid length ÷ wire diameter (d)-1; Effective laps=total number of laps-2
The number of laps is a reference value. There will be some deviations among batches.
The solid length is a reference value. There will be slight differences among batches. Moreover, if it is used under the limit condition of the solid length, it may cause the spring to be deformed or be damaged after using only a limited number of times.
Be sure to use within the allowable displacement Fmax.(mm).
kgf (load)=N/mm (spring constant)×0.101972×F (displacement); {kgf}=N×0.101972

C-NWL: Fmax. (allowable deflection)=L×40%

Type	Coil O.D. D - Free Length L		Outer Diameter D1	Wire Diameter d	F max.	N{kgf} max.		Spring Constant N/mm{kgf/mm}		Reference Compression Length
C－NWL	6.5－	30＊	8.1	0.8	12	13.7	{1.4}	1.1	{0.12}	9.6
		35＊			14			1.0	{0.10}	10.8
		40＊			16			0.9	{0.09}	12
		45＊			18			0.8	{0.08}	13.2
		50＊			20			0.7	{0.07}	14.4
	8.5－	35＊	10.5	1	14	20.6	{2.1}	1.5	{0.15}	10.8
		40＊			16			1.3	{0.13}	12
		45＊			18			1.1	{0.12}	13
	16.6－	60＊	19.8	1.6	24	27.5	{2.8}	1.1	{0.12}	20

C-NWL: Both ends are ground.

C-NWM: Fmax. (allowable deflection)=L×32%

Type	Coil O.D. D - Free Length L		Outer Diameter D1	Wire Diameter d	F max.	N{kgf} max.		Spring Constant N/mm{kgf/mm}		Reference Compression Length
C－NWM	6.5－	40＊	8.5	1	12.8	20.6	{2.1}	1.6	{0.16}	17.5
		45＊			14.4			1.4	{0.15}	19.5
		50＊			16			1.3	{0.13}	21
	13.6－	35＊	16.8	1.6	11.2	34.3	{3.5}	3.1	{0.31}	14.4
		50＊			16			2.1	{0.22}	18.4
		60＊			19.2			1.8	{0.18}	20.8

C-NWM: Both ends are ground.

■Spring Constant  N/mm {kgf/mm}

Type

C-VUY

C-VUR

C-VUF

C-VUL

D

3

0.098 ｛0.01｝

0.29 ｛0.03｝

0.49 ｛0.05｝

0.98 ｛0.10｝

4

5

6

8

0.196 ｛0.02｝

10

12

16

Fmax.

F=L×Fa%

F=L×60%

F=L×45%

F=L×40%

Different from ordinary springs on the market, MISUMI Round Wire Springs are more precise and refined, divided into the inner diameter standard type and the outer diameter standard type, the former of which is manufactured giving priority to the inner diameter tolerance while the latter is manufactured giving priority to the outer diameter tolerance.

Select an appropriate Round Wire Springs type according to the actual installation situation, and refer to the published content for the specific inner and outer diameter tolerance values.
* The solid length is a reference value. If it is used under the limit condition of the solid length, the spring may be deformed, or damaged after using only a limited number of times. Therefore, use within the allowable displacement Fmax.(mm).
To increase the usage count, it is recommended to use the spring up to 70% of the allowable displacement Fmax..

Precautions for use of Round Wire Springs
Operating temperature of Round Wire Springs
SWP-A……Normal temperature (0~40℃)
Stainless steel……-10~100℃
Spring oil tempered steel wire……Normal temperature (0~40℃)
* If the spring is used under conditions exceeding the above temperature, the load value may decrease due to usage conditions.
* When used in an environment with high and low temperature differences and humidity such as outdoors, it is recommended to choose stainless steel products.
* Heat-resistant springs can also be used. For details, refer to the Plastic Mold Components Catalog.
Stainless steel springs are also magnetic. Please be careful.