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

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

 

Outer Diameter D	φ10 or Less		Free Length L	50 or Less	±1.5mm
	φAbove 12			Above 60	±2.5mm
Material of Round Wire Springs
Material SUS304-WPB Spring Constant ±10%

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

Type	Coil O.D. D - Free Length L		Wire Dia. d	Solid Length	F max.	N{kgf} max.		Fa%
C-UBB	4－	10	0.65	7.0	2.5	12.3	{1.3 }	25
		15	0.7	10.3	3.75	18.4	{1.9 }
		20	0.75	14.4	5	24.5	{2.5 }	25
	5－	5	0.6	2.9	1.25	6.1	{0.63}	25
		10	0.75	6.9	2.5	12.3	{1.3 }
		15	0.8	9.8	3.75	18.4	{1.9 }
		20	0.85	13.4	5.0	24.5	{2.5 }	25
		25	0.9	17.8	6.25	30.6	{3.12 }	25
	6－	10	0.9	6.8	2.5	24.5	{2.5 }	25
		15	1.0	10.5	3.75	36.8	{3.8 }
		20	1.1	14.6	5.0	49.0	{5.0 }
		25	1.1	17.9	6.25	61.3	{6.26 }	25
	8－	10	1.1	6.9	2.5	24.5	{2.5 }	25
		15	1.2	9.9	3.75	36.8	{3.8 }
		20	1.3	14.0	5.0	49.0	{5.0 }
		25	1.3	14.5	6.25	61.3	{6.3 }
	10－	10	1.3	7.2	2.5	24.5	{2.5 }	25
		15	1.4	10.2	3.75	36.8	{3.8 }	25
		20	1.5	13.9	5.0	49.0	{5.0 }
		25	1.5	16.1	6.25	61.3	{6.3 }
		30	1.6	20.4	7.5	73.5	{7.5 }	25
	12－	15	1.5	9.4	3.75	36.8	{3.8 }	25
		20	1.6	12.4	5.0	49.0	{5.0 }
		30	1.8	20.3	7.5	73.5	{7.5 }
	13－	15	1.8	9.5	3.75	73.5	{7.5 }	25
		20	1.9	12.9	5.0	98.1	{10.01}	25
		25	2.0	17.0	6.25	123	{12.55}	25
		30	2.1	20.5	7.5	147	{15.0}	25
		40	2.3	28.2	10.0	196.0	{20.0}	25
		60	2.5	44.4	12	235	{24.0}	20
	16－	20	2.1	12.1	5.0	98.1	{10.01}	25
		30	2.4	21.0	7.5	147.0	{15.0}	25
	20－	25	2.9	16.7	6.25	184.0	{18.8}	25
		40	3.2	27.2	10	294	{30.0}	25
		60	3.5	44.6	12.0	353.0	{36.02}	25

The outer diameter standard type gives priority to guaranteeing the outer diameter, while the inner diameter is for reference only.
The solid length is a reference value. There will be slight differences among batches.
Be sure to use within the allowable displacement Fmax.(mm).
The number of laps is a reference value. There will be slight differences among batches.
kgf (load)=N/mm (spring constant)×0.101972×F (displacement)
{kgf}=N×0.101972

■Spring Constant
D12 is for C-UY・C-UR・C-UF・C-UBB only. D14 is for C-UBB only.

Type

C-UV

C-UY

C-UR

C-UF

C-UL

C-UTT

C-UM

C-UH

C-UBB

D

2

0.05{0.005}

0.2{0.02}

0.3{0.03}

0.5{0.05}

3

N/mm 0.05 {kgf/mm}{0.005}

N/mm 0.098 {kgf/mm}{0.01}

N/mm 0.29 {kgf/mm} {0.03}

N/mm 0.49 {kgf/mm} {0.05}

N/mm 0.98 {kgf/mm} {0.1}

1.5{0.15}

4

2.0 {0.2}

2.9{0.3}

4.9{0.5}

5

N/mm 2.0 {kgf/mm} {0.2}

6

N/mm 2.9 {kgf/mm} {0.3}

N/mm 5.9 {kgf/mm} {0.6}

N/mm 9.8 {kgf/mm} {1.0}

8

10

N/mm 0.2 {kgf/mm} {0.02}

12

13

N/mm 9.8 {kgf/mm} {1.0}

N/mm 19.6 {kgf/mm} {2.0}

14

16

20

0.3{0.03}

0.5{0.05}

0.98{0.1}

2.9{0.3}

3.9{0.4}

4.9{0.5}

14.7{1.5}

29.4{3.0}

Fmax.

F＝L×70％

F＝L×75％

F＝L×60％

F＝L×45％

F＝L×40％

F＝L×40％

F＝L×35％

F＝L×30％

F＝L×25％

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.