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Round Wire Coil Springs, Defection I.D. Referenced, Stainless Steel, Heavy Load【1-100 Pieces Per Package】 (Part Numbers)
- Volume Discount
[Features]·This is an inner diameter standard type spring. Note that this product is manufactured with priority given to the inner diameter tolerance. ·Although it is a stainless steel spring, it is magnetic. Please note.
- RoHS
Part Number
Configured Part Number is shown.
Economy Round Wire Coil Springs, Heavy Load
Heavy Load Sturdy Reliable
- Engineered for high-load applications without breaking the bank.
- Choose from a wide range of diameters and lengths to fit your needs.
- Built with durable materials for superior performance.
- Tailor the spring’s specifications to match your requirements.
- Designed for precision and longevity in demanding conditions.
MISUMI Standard
Cheaper Price
Product Variety
3D CAD Support
Product Overview
♢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.
♢Stainless steel springs are also magnetic. Please be careful.
Dimensional Drawing
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| 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% | |||||
Specification Table
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-2The 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×0.101972C-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% | |||||||||
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..
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
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.
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.
Related Products
 |  |  |
| (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, Ultra Heavy Load, Spring Constant 4.9 to 29.4N/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, Ultra Heavy Load Type |
Part Number
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- Please confirm the part number from "Specification / Dimension"on the left side, and then perform the CAD Data Download / 3D Preview operation.
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| Part Number |
|---|
| C-NWL8.5-35 |
| C-NWL8.5-40 |
| C-NWL8.5-45 |
| C-NWL16.6-60 |
| C-NWM6.5-40 |
| C-NWM6.5-45 |
| C-NWM6.5-50 |
| C-VUL16-50 |
| C-VUM5-20 |
| C-VUM6-20 |
| C-VUM6-25 |
| C-VUM8-20 |
| C-VUM8-25 |
| C-VUM10-20 |
| C-VUM10-25 |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Free Length L (mm) | Inner Dia. D-2d (or D) (Ø) | Outer Dia. D (or D1) (Ø) | Spring Constant (N/mm) | Allowable Load (Configurable Range) (N) | Material | Wire Dia. (Ø) | Height H2 at Allowable Load (mm) | Allowable Load P2 (N) | End Face Condition | Total Number of Turns N | Solid Length (mm) | Allowable Displacement (mm) | Sales Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MYR 1.64 | 300 Piece(s) | Available | 17 Day(s) | 35 | 8.5 | 10.5 | 1.5 | 16.01~30.00 | SUS304-WPB | 1 | - | 20.6 | Non-grinding Processing | - | - | 14 | Single Item | |
MYR 1.74 | 300 Piece(s) | 17 Day(s) | 40 | 8.5 | 10.5 | 1.3 | 16.01~30.00 | SUS304-WPB | 1 | - | 20.6 | Non-grinding Processing | - | - | 16 | Single Item | ||
MYR 1.74 | 300 Piece(s) | 17 Day(s) | 45 | 8.5 | 10.5 | 1.1 | 16.01~30.00 | SUS304-WPB | 1 | - | 20.6 | Non-grinding Processing | - | - | 18 | Single Item | ||
MYR 3.38 | 300 Piece(s) | 17 Day(s) | 60 | 16.6 | 19.8 | 1.1 | 16.01~30.00 | SUS304-WPB | 1.6 | - | 27.5 | Non-grinding Processing | - | - | 24 | Single Item | ||
MYR 1.46 | 300 Piece(s) | Available | 17 Day(s) | 40 | 6.5 | 8.5 | 1.6 | 16.01~30.00 | SUS304-WPB | 1 | - | 20.6 | Non-grinding Processing | - | - | 12.8 | Single Item | |
MYR 1.56 | 300 Piece(s) | Available | 17 Day(s) | 45 | 6.5 | 8.5 | 1.4 | 16.01~30.00 | SUS304-WPB | 1 | - | 20.6 | Non-grinding Processing | - | - | 14.4 | Single Item | |
MYR 1.64 | 1 Piece(s) | Available | 1 Day(s) | 50 | 6.5 | 8.5 | 1.3 | 16.01~30.00 | SUS304-WPB | 1 | - | 20.6 | Non-grinding Processing | - | - | 16 | Single Item | |
MYR 5.70 | 100 Piece(s) | Available | 10 Day(s) | 50 | 16 | 19 | 0.98 | 16.01~30.00 | SUS304-WPB | 1.5 | 30 | 19.6 | Grinding Processing | - | 15.8 | 20 | Single Item | |
MYR 1.37 | 1 Piece(s) | Available | 1 Day(s) | 20 | 5 | 6.8 | 2.94 | 16.01~30.00 | SUS304-WPB | 0.9 | 13 | 20.58 | Grinding Processing | 12 | 11.7 | 7 | Single Item | |
MYR 1.66 | 1 Piece(s) | Available | 1 Day(s) | 20 | 6 | 7.8 | 2.94 | 16.01~30.00 | SUS304-WPB | 0.9 | 13 | 20.58 | Grinding Processing | 7.5 | 7.7 | 7 | Single Item | |
MYR 2.57 | 1 Piece(s) | Available | 1 Day(s) | 25 | 6 | 8 | 2.94 | 16.01~30.00 | SUS304-WPB | 1 | 16.25 | 25.68 | Grinding Processing | 10 | 11 | 8.75 | Single Item | |
MYR 1.91 | 1 Piece(s) | Available | 1 Day(s) | 20 | 8 | 10.2 | 2.94 | 16.01~30.00 | SUS304-WPB | 1.1 | 13 | 20.58 | Grinding Processing | 7 | 8.8 | 7 | Single Item | |
MYR 2.69 | 1 Piece(s) | Available | 1 Day(s) | 25 | 8 | 10.2 | 2.94 | 16.01~30.00 | SUS304-WPB | 1.1 | 16.25 | 25.68 | Grinding Processing | 7 | 8.8 | 8.75 | Single Item | |
MYR 1.93 | 1 Piece(s) | Available | 1 Day(s) | 20 | 10 | 12.4 | 2.94 | 16.01~30.00 | SUS304-WPB | 1.2 | 13 | 20.58 | Grinding Processing | 6 | 8.4 | 7 | Single Item | |
MYR 2.44 | 1 Piece(s) | Available | 1 Day(s) | 25 | 10 | 12.6 | 2.94 | 16.01~30.00 | SUS304-WPB | 1.3 | 16.25 | 25.68 | Grinding Processing | 7 | 10.4 | 8.75 | Single Item |
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Specification/Dimensions
-
Free Length L(mm)
-
Inner Dia. D-2d (or D)(Ø)
-
Outer Dia. D (or D1)(Ø)
-
Spring Constant(N/mm)
-
Material
- SUS304-WPB
-
Wire Dia.(Ø)
-
Sales Package
- Package
- Single Item
-
type
- C-NWL
- C-NWM
- C-VUL
- C-VUM
- E-NWL16.6-60
- E-NWL6.5-30
- E-NWL6.5-35
- E-NWL6.5-40
- E-NWL6.5-45
- E-NWL6.5-50
- E-NWL8.5-35
- E-NWL8.5-40
- E-NWL8.5-45
- E-NWM13.6-35
- E-NWM13.6-50
- E-NWM13.6-60
- E-NWM6.5-40
- E-NWM6.5-45
- E-NWM6.5-50
-
Allowable Load (Configurable Range)(N)
- 4.51~8.50
- 8.51~16.00
- 16.01~30.00
- 30.01~50.00
-
CAD
- 2D
- 3D
Days to Ship
-
- All
- 1 Day(s) or Less
- 6 Day(s) or Less
- 10 Day(s) or Less
- 11 Day(s) or Less
- 13 Day(s) or Less
- 17 Day(s) or Less
Specify Alterations
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Frequently asked question (FAQ)
- Question: How long is the life of a basic round wire coil spring?
-
Answer:
Unfortunately, there are no specific test values as reference regarding the life of a round wire coil spring because there is individual difference to a certain extent and the installation conditions are complicated.
The usage count varies with the operating temperature, environment, and amount of deformation. To increase the usage count, it is recommended to use the spring up to 70% of the allowable displacement Fmax.. - Question: What are the JIS standards for general spring-related materials?
-
Answer:
Piano wires: JIS G 3522
Iron wires: JIS G 3532
Hard drawn steel wires: JIS G 3521
Stainless steel wires for springs: JIS G 4313 - Question: What influence will the usage without a spring rail have on the spring?
-
Answer:
The usage without a spring rail will cause buckling of the spring, bending of its body and other problems, leading to breakage due to high stress locally generated on the inner side of the bending part. To ensure the service life of the spring, install the spring using the shaft, outer diameter guide rail, etc.
*Basically, it is ideal to use the intermediate shaft of the inner diameter side guide rail by passing it through from the upper surface to the lower surface. - Question: What influence will the usage count of more than 300,000 times beyond the maximum displacement (when used close to the solid length) have on the spring?
- Answer: The usage count of more than 300,000 times beyond the maximum displacement (when used close to the solid length) will cause high stress breakage above the calculated value on the section. In addition, near the solid length, the effective coil part will gradually get close and the spring constant will increase. Therefore, be sure to use within the allowable displacement Fmax.(mm).
- Question: What is the difference between a piano steel wire spring and a hard drawn steel wire spring?
-
Answer:
There is little difference in appearance between the two materials. In short, the piano wire is an advanced material, and the hard drawn steel wire is a general material.
The piano wire is often used as a spring for precision machinery while the hard drawn steel wire is mostly used as a peripheral spring for groceries or blinds.
They are both high-carbon steels with almost the same chemical composition. The production of piano wires is time-consuming and they are expensive because there is additional standardized management and inspection of impurities, the depth of surface scars, and the depth of decarburized layer.
Although the subtle difference is invisible to the naked eye, it has a great influence on the quality of the spring.
Additional Products in this Category
- Compression Spring (1m) EA952S-141
- Compression Spring (1m) EA952S-204
- Compression Spring (Stainless Steel) EA952SF-106
- Compression Spring (Stainless Steel) EA952SF-173
- Compression Spring (Stainless Steel) EA952SF-185
- Compression Spring (Stainless Steel) EA952SF-24
- Compression Spring (Stainless Steel) EA952SF-44
- DANLY Spring Series (Round Wire)
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