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

Brand :

MISUMI

Caution

This product will be discontinued once stock ran out. The replacement model CLICK here
Download Free! >>Economy Series Catalog ver2023 (TH-EN)_Part11 CLICK here

Product Description

・ Spring type: Round Wire Coil Springs, Ultra-Light Load
・ O.D. Referenced Type is outer diameter prioritized, and the I.D. is a reference value.
・ Spring material: Made of stainless steel SUS304-WPB Spring Constant ±10%
・ Model type: C-UF, C-UR, C-UV, C-UY
・ Outer diameter D (Ø) [mm]: 2, 3, 4, 5, 6, 8, 10, 12, 16, 20
・ Free length range [mm]: 5, 10, 15, 20, 25, 30, 35, 40
・ End face type: No grinding, With grinding
・ This is an economy item; The price is cheaper than the MISUMI standard product.

Economy Round Wire Coil Springs

Stainless Steel Light Load Reliable

- Manufactured with stainless steel SUS304-WPB for exceptional durability and precise performance.

- Choose from a wide range of inner diameters and free lengths to perfectly fit your needs.

- Ideal for ultra-light load applications with efficiency.

- Economical solution with quality that meets your standards, priced below standard products.

- Suitable for various industries with customizable spring constants.

MISUMI Standard

Cheaper Price

Product Variety

3D CAD
3D CAD Support

Product Overview

♢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 Round Wire Springs are also magnetic. Please be careful.

Dimensional Drawing

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%

Specification Table

■C-UV: 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	Compression Length	F max.	N{kgf} max.		Fa％
Type	Coil O.D. D - Free Length L		Wire Dia. D	Compression Length	F max.	N{kgf} max.		Fa％
C-UV	3－	5＊	0.15	1.1	3.5	0.18	{0.018}	70
		10＊	0.18	2.5	7	0.35	{0.036}
		15＊	0.18	2.5	10.5	0.53	{0.054}
		20＊	0.20	3.3	14	0.70	{0.071}	70
		25＊	0.23	6.2	17.5	0.88	{0.089}	70
		30＊	0.23	6.2	21	1.05	{0.107}	70
	4－	5＊	0.18	1.2	3.5	0.18	{0.018}	70
		10＊	0.20	1.7	7	0.35	{0.036}
		15＊	0.23	3.0	10.5	0.53	{0.054}
		20＊	0.23	3.0	14	0.70	{0.071}

	5－	5＊	0.20	1.2	3.5	0.18	{0.018}	70
		10＊	0.23	1.8	7	0.35	{0.036}
		15＊	0.26	2.9	10.5	0.53	{0.054}
		20＊	0.29	4.5	14	0.70	{0.071}
	6－	10＊	0.26	2.0	7	0.35	{0.036}	70
		15＊	0.30	3.3	10.5	0.53	{0.054}	70
		20＊	0.30	3.3	14	0.70	{0.071}	70
	8－	10＊	0.30	1.9	7	0.35	{0.036}	70
		15＊	0.35	3.2	10.5	0.53	{0.054}
		20＊	0.35	3.2	14	0.70	{0.071}
		25＊	0.40	5.6	17.5	0.88	{0.089}
		30＊	0.40	5.6	21	1.05	{0.107}	70
		40＊	0.45	9.3	28	1.40	{0.143}	70
		50＊	0.45	9.3	35	1.75	{0.179}	70

■C－UY: 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	Compression Length	F max.	N{kgf} max.		Fa％
Type	Coil O.D. D - Free Length L		Wire Dia. D	Compression Length	F max.	N{kgf} max.		Fa％
C-UY	2－	5＊	0.13	1.5	3.0	0.15	{0.015}	60
		10＊	0.13	1.5	6.0	0.29	{0.03}
		15＊	0.15	2.7	9.0	0.44	{0.045}
		20＊	0.15	2.7	12	0.59	{0.06}	60
		25＊	0.18	6.3	15	0.74	{0.076}	60
		30＊	0.18	6.3	18	0.88	{0.089}	60
	3－	5＊	0.16	0.92	3.75	0.37	{0.0378}	75
		10＊	0.20	2.0	7.5	0.74	{0.075}	75
		15＊	0.23	3.45	11.25	1.1	{0.1125}	75
		20＊	0.23	3.45	15	1.47	{0.15}	75
	4－	5＊	0.20	1.05	3.75	0.37	{0.0375}	75
		10＊	0.23	1.84	7.5	0.74	{0.075}
		15＊	0.26	2.86	11.25	1.1	{0.1125}
		20＊	0.29	4.64	15.0	1.47	{0.15}
		25＊	0.30	5.4	18.75	1.84	{0.1875}
		30＊	0.30	5.4	22.5	2.26	{0.23}
	5－	5＊	0.23	1.15	3.75	0.37	{0.0378}	75
		10＊	0.26	1.82	7.5	0.74	{0.075}	75
		15＊	0.30	3.15	11.25	1.1	{0.1125}
		20＊	0.30	3.15	15.0	1.47	{0.15}
		25＊	0.32	4.16	18.75	1.84	{0.1875}
	6－	5＊	0.26	1.24	3.5	0.34	{0.035}	70
		10＊	0.30	2.1	7.5	0.74	{0.075}	75
		15＊	0.32	2.64	11.25	1.1	{0.1125}
		20＊	0.35	3.85	15.0	1.47	{0.15}
		25＊	0.38	5.32	18.75	1.84	{0.1875}
		30＊	0.40	6.8	22.5	2.21	{0.225}
		40＊	0.40	6.8	30	2.94	{0.3}	75
	8－	10＊	0.35	2.19	7.5	0.74	{0.075}	75
		15＊	0.40	3.4	11.25	1.1	{0.1125}
		20＊	0.40	3.4	15.0	1.47	{0.15}
		25＊	0.45	5.4	18.75	1.84	{0.1875}
		30＊	0.45	5.4	22.5	2.21	{0.225}
		40＊	0.50	8.3	30	2.94	{0.3}	75
	10－	10＊	0.50	3.25	6	1.18	{0.1204}	60
		15＊	0.50	3.25	11.25	2.21	{0.225}	75
		20＊	0.55	4.4	15.0	2.94	{0.3}
		25＊	0.55	4.4	18.75	3.68	{0.375}
		30＊	0.60	6.15	22.5	4.41	{0.45}
		35＊	0.60	6.3	26.25	5.1	{0.52}
	12－	15＊	0.55	3.3	11.25	2.206	{0.225}	75

All the both ends marked with * are not ground.
● 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 may be some variations depending on the lot.

The values of compression length are for reference only. There may be some variations depending on the lot.
And if it is used under the limit condition of compression length, the spring may be deformed, or damaged after using only a limited number of cycles.

Be sure to use within the allowable displacement Fmax.(mm).

■C-UR: 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./ tr>

Type	Coil O.D. D - Free Length L		Wire Dia. D	Compression Length	F max.	N{kgf} max.		Fa％
Type	Coil O.D. D - Free Length L		Wire Dia. D	Compression Length	F max.	N{kgf} max.		Fa％
C-UR	2－	5＊	0.18	2.0	2.5	0.49	{0.05}	50
		10＊	0.18	2.0	5	0.98	{0.1}
		15＊	0.23	6.0	7.5	1.5	{0.15}
		20＊	0.23	6.0	10	2.0	{0.2}	50
	3－	5＊	0.23	1.6	3	0.9	{0.09}	60
		10＊	0.25	2.1	6	1.8	{0.18}
		15＊	0.30	4.5	9	2.6	{0.27}
		20＊	0.30	4.5	12	3.5	{0.36}
		25＊	0.32	6.4	15	4.4	{0.45}
		30＊	0.32	6.4	18	5.3	{0.45}	60
	4－	5＊	0.26	1.4	3	0.9	{0.09}	60
		10＊	0.29	2.0	6	1.8	{0.18}
		15＊	0.32	3.0	9	2.6	{0.27}
		20＊	0.38	6.1	12	3.5	{0.36}
		25＊	0.38	6.1	15	4.4	{0.45}
		30＊	0.40	8.0	18	5.3	{0.54}
		45＊	0.45	14.4	27	7.9	{0.81}	60
	5－	10＊	0.35	2.71	6	1.8	{0.18}	60
		15＊	0.38	3.61	9	2.6	{0.27}
		20＊	0.38	3.61	12	3.5	{0.36}
		25＊	0.45	7.43	15	4.4	{0.45}
		30＊	0.45	7.43	18	5.3	{0.54}
		35＊	0.50	12.25	21	6.2	{0.63}
	6－	5＊	0.32	1.5	3	0.9	{0.09}	60
		10＊	0.40	3.0	6	1.8	{0.18}
		15＊	0.40	3.0	9	2.6	{0.27}
		20＊	0.50	7.0	12	3.5	{0.36}
		25＊	0.50	7.0	15	4.4	{0.45}
		30＊	0.50	7.0	18	5.3	{0.54}
	8－	10＊	0.45	2.6	6	1.8	{0.18}	60
		15＊	0.50	3.6	9	2.6	{0.27}
		20＊	0.50	3.6	12	3.5	{0.36}
		25＊	0.55	5.9	15	4.4	{0.45}
		30＊	0.65	10.4	18	5.3	{0.54}
		35＊	0.65	10.4	21	6.2	{0.63}
		40＊	0.70	15.4	24	7.1	{0.72}	60
		60＊	0.80	27.6	31.2	10.6	{1.08}	52
	10－	10＊	0.55	3.3	6	1.8	{0.18}	60
		15＊	0.60	4.2	9	2.6	{0.27}
		20＊	0.65	6.2	12	3.5	{0.36}
		25＊	0.65	6.2	15	4.4	{0.45}
		30＊	0.70	8.4	18	5.3	{0.54}
	12－	60＊	0.90	16.2	36	10.6	{1.08}	60
	16－	20＊	0.80	5.4	12	3.5	{0.36}	60

All the two end faces marked with * are not ground.

The values of compression length are for reference only. There may be some variations depending on the lot.

Be sure to use within the allowable displacement Fmax.(mm).

■C-UF: Fmax. (allowable displacement) = L×45％

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	Compression Length	F max.	N{kgf} max.		Fa％
Type	Coil O.D. D - Free Length L		Wire Dia. D	Compression Length	F max.	N{kgf} max.		Fa％
C-UF	2－	5＊	0.2	2.35	2.25	0.66	{0.068}	45
		10＊	0.2	2.35	4.5	1.3	{0.14}	45
	3－	5＊	0.26	1.8	2.25	1.1	{0.11}	45
		10＊	0.32	4.5	4.5	2.2	{0.22}
		15＊	0.32	4.5	6.7	3.2	{0.33}
		20＊	0.35	6.3	9.0	4.4	{0.45}
		25＊	0.35	6.3	11.2	5.5	{0.56}
	4－	5＊	0.32	2.0	2.25	1.1	{0.11}	45
		10＊	0.35	3.0	4.5	2.2	{0.22}
		15＊	0.4	5.2	6.7	3.2	{0.33}
		20＊	0.4	5.2	9.0	4.4	{0.45}
		25＊	0.45	9.5	11.2	5.5	{0.56}
		30＊	0.45	9.5	13.5	6.6	{0.67}
	5－	10＊	0.4	3.2	4.5	2.2	{0.23}	45
		15＊	0.4	3.2	6.75	3.3	{0.34}
		20＊	0.45	4.95	9.0	4.4	{0.45}
		25＊	0.45	4.95	11.25	5.5	{0.56}
		30＊	0.5	7.75	13.5	6.7	{0.68}
		35＊	0.5	7.75	15.75	7.7	{0.79}
	6－	10＊	0.5	5.0	4.5	2.2	{0.22}	45
		15＊	0.55	7.7	6.7	3.2	{0.33}
		20＊	0.55	7.7	9.0	4.4	{0.45}
		25	0.6	10.8	11.2	5.5	{0.56}
		30	0.65	15.6	13.5	6.6	{0.67}
	8－	10	0.6	5.4	4.5	2.2	{0.22}	45
		15	0.65	7.2	6.7	3.2	{0.33}
		20	0.7	10.5	9.0	4.4	{0.45}
		25	0.7	10.5	11.2	5.5	{0.56}
		30	0.75	13.5	13.5	6.6	{0.67}
		35	0.75	13.5	15.7	7.6	{0.78}
		40	0.8	18.4	18	8.8	{0.89}	45
	10－	15	0.65	4.6	6.7	3.2	{0.33}	45
		20	0.8	9.6	9.0	4.4	{0.45}
		25	0.8	9.6	11.2	5.5	{0.56}
		30	0.85	12.8	13.5	6.6	{0.67}
	12－	15	0.8	6.8	6.7	3.2	{0.33}	45
		20	0.8	6.8	9.0	4.4	{0.45}	45
		25	0.8	6.8	11.2	5.5	{0.56}	45
	16－	35	1.1	12.1	15.7	7.6	{0.78}	45
	20－	20	1.2	7.2	9	8.8	{0.89}	45
		25	1.3	9.1	11.3	11.1	{1.13}	45
		70	1.7	26.4	31.5	30.9	{3.15}	45

Both ends of UF models with * are not ground.

The values of compression length are for reference only. There may be some variations depending on the lot.

Product Features

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..

Installation Diagram of Outer Diameter Standard Type Round Wire Coil Spring, Round Wire Springs

Precautions

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.

Example of Use

Hole Reference Positioning Mechanism
A Round Wire Springs is mechanism for positioning the workpiece based on the hole reference.
Loosening during positioning can be reduced by using a tapered pin to eliminate the deviation caused by the tolerance of each workpiece hole.
Select the compression spring to move from the beginning of the positioning contact with the workpiece.


(Economy series) Round Wire Springs - Outer Diameter Standard Stainless Steel, Ultra Light Load, Spring Constant 0.05 to 0.98 N/mm	(Economy series) Round Wire Springs - Inner Diameter Standard Stainless Steel, Light Load, Spring Constant 0.29 to 0.49 N/mm	(Economy series) Round Wire Springs - Outer Diameter Standard Stainless Steel, Heavy Load, Spring Constant 2.0 to 14.7 N/mm
Reason for Recommendation: MISUMI Basic Round Wire Springs, Outer Diameter Standard Type, Ultra Light Load Type	Reason for Recommendation: MISUMI Basic Round Wire Springs, Inner Diameter Standard Type, Light Load Type	Reason for Recommendation: MISUMI Basic Round Wire Springs, Outer Diameter Standard Type, Heavy Load Type

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

Caution

Product Description

Economy Round Wire Coil Springs

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Service hours

Noted for use