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Compression Springs

Custom Conical Compression Springs

A tapered compression spring for assemblies that need a changing diameter, improved stability, or a lower compressed package than a conventional straight coil can provide.

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Conical Compression Springs manufactured by CustomSprings
Typical configurations
108
Wire diameter
0.2–12 mm
Outside diameter
2.49–179.35 mm
Free length
2.81–518.4 mm

About Custom Conical Compression Springs

Conical compression springs use a larger diameter at one end and a smaller diameter at the other. Depending on the diameter progression and pitch, coils can be arranged to nest during compression. That makes this form useful when available height is tight, but true nesting has to be designed into the geometry rather than assumed from the conical shape.

Key Design Characteristics

  • Large-end and small-end diameters must match the assembly and the intended installation direction.
  • Nesting depends on coil-to-coil clearance, wire diameter, pitch and the change in mean diameter from turn to turn.
  • A wider base can improve lateral stability compared with a tall cylindrical spring.
  • The load curve may change as coils progressively come into contact, so the working range should be defined rather than judged only from free height.

What to Specify for a Custom Quote

  • Wire diameter, large OD and small OD
  • Free length and the maximum allowed compressed height
  • Required load at the installed and working positions
  • Whether near-nesting or a specific solid height is required
  • End seating, orientation, guide features, cycles and environment

Manufacturing Review

The important production checks are diameter progression, pitch distribution, end orientation and compressed fit. If the design is intended to telescope, the drawing should state the required compressed condition so coil interference can be reviewed before tooling or samples are made.

Common Assembly Roles

  • Low-height return systems
  • Telescoping pockets and tapered housings
  • Stable compression where a broad base is useful

Product Data

Typical Spring Configurations

Use these data points to compare practical starting dimensions and material options. Final production specifications are confirmed against your drawing and working conditions.

ModelWire dia.ODIDFree lengthRateMaterialCoilsMax load
SC-120-0135-0391-0111 1.2 mm 13.52 mm 11.12 mm 39.1 mm 0.473 304 Stainless Steel 22.2 4.52
SC-120-0091-0330-0245 1.2 mm 9.07 mm 6.67 mm 32.98 mm 1.764 301 Stainless Steel 21.8 6.84
SC-040-0041-0142-0237 0.4 mm 4.1 mm 3.3 mm 14.21 mm 0.184 65Mn Spring Steel 28.6 0.31
SC-050-0039-0035-0014 0.5 mm 3.93 mm 2.93 mm 3.54 mm 4.934 Oil-Tempered Spring Wire (SWO) 5.1 3.4
SC-030-0062-0028-0306 0.3 mm 6.21 mm 5.61 mm 2.81 mm 0.061 Music Wire (SWP-B) 7.4 0.02
SC-350-0277-1274-0221 3.5 mm 27.66 mm 20.66 mm 127.42 mm 4.91 65Mn Spring Steel 22.4 202.99
SC-500-0719-1917-0095 5 mm 71.88 mm 61.88 mm 191.73 mm 0.487 Phosphor Bronze (QSn4-0.3) 23.5 22.51
SC-800-0655-1588-0058 8 mm 65.49 mm 49.49 mm 158.75 mm 14.874 301 Stainless Steel 14 535.77
SC-400-0437-0360-0243 4 mm 43.71 mm 35.71 mm 36.04 mm 9.389 65Mn Spring Steel 6.3 63.09
SC-700-0335-2111-0377 7 mm 33.47 mm 19.47 mm 211.14 mm 74.287 Carbon Spring Steel Wire (SWC) 19.1 3983.28
SC-1200-1794-3211-0317 12 mm 179.35 mm 155.35 mm 321.09 mm 2.525 Inconel X-750 18.3 174.81
SC-100-0112-0170-0404 1 mm 11.24 mm 9.24 mm 16.98 mm 0.604 301 Stainless Steel 14.8 1.06
SC-120-0078-0343-0064 1.2 mm 7.81 mm 5.41 mm 34.26 mm 2.022 Phosphor Bronze (QSn4-0.3) 19.2 17.69
SC-150-0178-0571-0393 1.5 mm 17.78 mm 14.78 mm 57.14 mm 0.441 65Mn Spring Steel 28.3 3.82
SC-080-0079-0236-0139 0.8 mm 7.9 mm 6.3 mm 23.6 mm 0.471 Inconel X-750 26 0.74
SC-200-0244-0491-0400 2 mm 24.43 mm 20.43 mm 49.14 mm 0.8 Carbon Spring Steel Wire (SWC) 18.9 5.8
SC-300-0392-0796-0274 3 mm 39.16 mm 33.16 mm 79.59 mm 0.935 Inconel X-750 19.1 15.74
SC-060-0096-0250-0206 0.6 mm 9.62 mm 8.42 mm 25.04 mm 0.043 Beryllium Copper (QBe2) 26 0.32
SC-100-0129-0195-0415 1 mm 12.91 mm 10.91 mm 19.52 mm 0.527 60Si2MnA Spring Steel 13.1 2.13
SC-120-0057-0281-0327 1.2 mm 5.74 mm 3.34 mm 28.12 mm 14.886 Inconel X-750 16.2 83.06
SC-700-0368-2101-0025 7 mm 36.84 mm 22.84 mm 210.06 mm 50.701 60Si2MnA Spring Steel 18.6 3258.07
SC-030-0054-0030-0023 0.3 mm 5.39 mm 4.79 mm 2.97 mm 0.106 Oil-Tempered Spring Wire (SWO) 7.2 0.07
SC-120-0113-0435-0003 1.2 mm 11.29 mm 8.89 mm 43.52 mm 0.752 Oil-Tempered Spring Wire (SWO) 27.5 5.01
SC-800-0389-2261-0376 8 mm 38.93 mm 22.93 mm 226.09 mm 64.682 Carbon Spring Steel Wire (SWC) 22 2308.49
SC-800-0935-1451-0066 8 mm 93.52 mm 77.52 mm 145.12 mm 4.738 Music Wire (SWP-B) 15.7 70.03
SC-060-0049-0058-0295 0.6 mm 4.94 mm 3.74 mm 5.81 mm 2.525 Oil-Tempered Spring Wire (SWO) 7.7 1.99
SC-600-0549-0522-0233 6 mm 54.89 mm 42.89 mm 52.18 mm 21.474 60Si2MnA Spring Steel 7.1 146.88
SC-060-0063-0115-0098 0.6 mm 6.32 mm 5.12 mm 11.52 mm 0.498 301 Stainless Steel 14 1.01
SC-040-0040-0096-0194 0.4 mm 3.97 mm 3.17 mm 9.6 mm 0.308 Carbon Spring Steel Wire (SWC) 18.9 0.45
SC-180-0125-0591-0056 1.8 mm 12.51 mm 8.91 mm 59.1 mm 3.126 Music Wire (SWP-A) 28.1 17.72
SC-500-0329-0427-0059 5 mm 32.94 mm 22.94 mm 42.73 mm 73.994 Carbon Spring Steel Wire (SWC) 5.3 806.54
SC-060-0086-0079-0018 0.6 mm 8.65 mm 7.45 mm 7.92 mm 0.327 Inconel X-750 9.5 0.44
SC-700-0808-2694-0156 7 mm 80.8 mm 66.8 mm 269.44 mm 2.622 Inconel X-750 24.5 166.9
SC-1200-1723-2019-0117 12 mm 172.34 mm 148.34 mm 201.89 mm 5.341 Inconel X-750 10.3 300.45
SC-100-0158-0222-0028 1 mm 15.81 mm 13.81 mm 22.19 mm 0.151 316 Stainless Steel 19.6 0.28
SC-400-0528-0379-0281 4 mm 52.76 mm 44.76 mm 37.91 mm 4.422 Carbon Spring Steel Wire (SWC) 6.4 40.29
SC-600-0379-1855-0409 6 mm 37.93 mm 25.93 mm 185.51 mm 19.831 Music Wire (SWP-B) 20.9 778.75
SC-250-0163-0334-0039 2.5 mm 16.28 mm 11.28 mm 33.42 mm 22.2 301 Stainless Steel 7.8 239.53
SC-1000-1109-1430-0008 10 mm 110.92 mm 90.92 mm 143.03 mm 8.741 301 Stainless Steel 11.1 231.72
SC-600-0829-1372-0388 6 mm 82.88 mm 70.88 mm 137.15 mm 1.667 60Si2MnA Spring Steel 17.9 34.81
SC-250-0306-0468-0188 2.5 mm 30.61 mm 25.61 mm 46.83 mm 1.614 Music Wire (SWP-A) 12.3 21.5
SC-030-0043-0030-0123 0.3 mm 4.28 mm 3.68 mm 3.04 mm 0.199 Music Wire (SWP-B) 8.4 0.08
SC-200-0301-0148-0285 2 mm 30.11 mm 26.11 mm 14.78 mm 2.164 Music Wire (SWP-B) 4.8 7.92
SC-200-0153-0788-0072 2 mm 15.34 mm 11.34 mm 78.84 mm 2.483 65Mn Spring Steel 28.8 32.04
SC-250-0364-0505-0167 2.5 mm 36.42 mm 31.42 mm 50.47 mm 0.724 Music Wire (SWP-B) 15.2 5.19
SC-080-0060-0164-0094 0.8 mm 5.96 mm 4.36 mm 16.45 mm 2.103 60Si2MnA Spring Steel 15 5.47
SC-120-0192-0363-0088 1.2 mm 19.17 mm 16.77 mm 36.34 mm 0.19 Carbon Spring Steel Wire (SWC) 19.5 1.77
SC-060-0035-0130-0345 0.6 mm 3.5 mm 2.3 mm 13.05 mm 4.165 65Mn Spring Steel 14.6 11.2
SC-400-0514-1126-0164 4 mm 51.41 mm 43.41 mm 112.55 mm 1.435 Music Wire (SWP-A) 18.1 45.52
SC-600-0486-0899-0159 6 mm 48.61 mm 36.61 mm 89.9 mm 18.29 316 Stainless Steel 8.9 464.55
SC-500-0372-1898-0378 5 mm 37.23 mm 27.23 mm 189.85 mm 4.292 Beryllium Copper (QBe2) 27.1 164.45
SC-700-0395-0712-0005 7 mm 39.46 mm 25.46 mm 71.22 mm 135.069 Carbon Spring Steel Wire (SWC) 6.6 2732.45
SC-300-0158-0802-0325 3 mm 15.79 mm 9.79 mm 80.25 mm 19.505 60Si2MnA Spring Steel 21.1 232.5
SC-250-0316-0760-0148 2.5 mm 31.64 mm 26.64 mm 75.98 mm 0.624 60Si2MnA Spring Steel 26 4.17
SC-600-0860-1149-0015 6 mm 85.97 mm 73.97 mm 114.86 mm 1.37 Beryllium Copper (QBe2) 13.1 29.6
SC-100-0088-0311-0336 1 mm 8.78 mm 6.78 mm 31.07 mm 0.473 Phosphor Bronze (QSn4-0.3) 24 2.82
SC-1200-0913-2963-0362 12 mm 91.3 mm 67.3 mm 296.27 mm 19.706 316 Stainless Steel 20.2 771.48
SC-250-0254-0598-0323 2.5 mm 25.37 mm 20.37 mm 59.83 mm 2.054 65Mn Spring Steel 16.7 20.58
SC-150-0139-0451-0384 1.5 mm 13.89 mm 10.89 mm 45.06 mm 1.228 65Mn Spring Steel 22.9 10.7
SC-120-0149-0313-0063 1.2 mm 14.94 mm 12.54 mm 31.27 mm 0.385 Music Wire (SWP-B) 21.6 1.15
SC-800-0854-0822-0348 8 mm 85.41 mm 69.41 mm 82.23 mm 17.506 Music Wire (SWP-B) 6 409.29
SC-300-0459-0603-0130 3 mm 45.88 mm 39.88 mm 60.33 mm 0.579 301 Stainless Steel 17.3 3.71
SC-400-0464-0715-0219 4 mm 46.36 mm 38.36 mm 71.53 mm 3.301 304 Stainless Steel 10.8 70.97
SC-060-0076-0050-0125 0.6 mm 7.56 mm 6.36 mm 5.04 mm 0.635 Music Wire (SWP-A) 7 0.42
SC-200-0094-0638-0338 2 mm 9.35 mm 5.35 mm 63.77 mm 13.419 304 Stainless Steel 27.9 75.82
SC-700-0975-1226-0383 7 mm 97.53 mm 83.53 mm 122.58 mm 1.642 Phosphor Bronze (QSn4-0.3) 12.1 43.04
SC-500-0403-0862-0406 5 mm 40.27 mm 30.27 mm 86.16 mm 12.232 65Mn Spring Steel 12.5 177.37
SC-080-0108-0143-0037 0.8 mm 10.83 mm 9.23 mm 14.33 mm 0.276 60Si2MnA Spring Steel 15.5 0.43
SC-1000-0456-2383-0140 10 mm 45.64 mm 25.64 mm 238.34 mm 75.473 Phosphor Bronze (QSn4-0.3) 16.5 3732.12
SC-080-0102-0266-0304 0.8 mm 10.19 mm 8.59 mm 26.64 mm 0.195 Inconel X-750 26 0.72
SC-800-0661-2854-0296 8 mm 66.14 mm 50.14 mm 285.39 mm 10.124 Carbon Spring Steel Wire (SWC) 22.2 656.96
SC-020-0025-0030-0105 0.2 mm 2.49 mm 2.09 mm 3 mm 0.105 301 Stainless Steel 12.4 0.04
SC-180-0124-0523-0017 1.8 mm 12.42 mm 8.82 mm 52.27 mm 4.729 60Si2MnA Spring Steel 19.3 65.88
SC-700-0637-1924-0092 7 mm 63.68 mm 49.68 mm 192.4 mm 3.975 Phosphor Bronze (QSn4-0.3) 19 183.69
SC-350-0303-0449-0247 3.5 mm 30.32 mm 23.32 mm 44.89 mm 4.983 Phosphor Bronze (QSn4-0.3) 10 30.45
SC-1000-1504-4429-0182 10 mm 150.35 mm 130.35 mm 442.86 mm 1.211 60Si2MnA Spring Steel 30.5 112.15
SC-800-0448-1721-0185 8 mm 44.85 mm 28.85 mm 172.14 mm 70.556 Music Wire (SWP-B) 13 2681.83
SC-700-1025-1489-0370 7 mm 102.48 mm 88.48 mm 148.87 mm 1.168 Phosphor Bronze (QSn4-0.3) 14.1 39.83
SC-080-0060-0170-0106 0.8 mm 5.96 mm 4.36 mm 17 mm 2.222 Music Wire (SWP-B) 15.3 7.67
SC-200-0285-0482-0161 2 mm 28.52 mm 24.52 mm 48.21 mm 0.445 Music Wire (SWP-A) 20.1 2.7
SC-030-0029-0059-0177 0.3 mm 2.86 mm 2.26 mm 5.94 mm 0.179 Phosphor Bronze (QSn4-0.3) 15.8 0.17
SC-040-0040-0126-0267 0.4 mm 4.04 mm 3.24 mm 12.62 mm 0.285 Carbon Spring Steel Wire (SWC) 19.8 0.87
SC-020-0040-0055-0289 0.2 mm 3.96 mm 3.56 mm 5.49 mm 0.014 Oil-Tempered Spring Wire (SWO) 22.3 0.01
SC-040-0050-0070-0316 0.4 mm 5.02 mm 4.22 mm 6.95 mm 0.224 Music Wire (SWP-A) 13 0.31
SC-400-0574-1438-0248 4 mm 57.37 mm 49.37 mm 143.79 mm 0.347 Beryllium Copper (QBe2) 31.1 4.19
SC-050-0077-0140-0101 0.5 mm 7.69 mm 6.69 mm 14.04 mm 0.097 65Mn Spring Steel 18.7 0.31
SC-180-0176-0225-0198 1.8 mm 17.56 mm 13.96 mm 22.48 mm 1.883 Phosphor Bronze (QSn4-0.3) 8.8 8.15
SC-1200-1585-1140-0414 12 mm 158.46 mm 134.46 mm 113.96 mm 9.332 301 Stainless Steel 7.6 132.89
SC-020-0036-0054-0277 0.2 mm 3.55 mm 3.15 mm 5.44 mm 0.011 Phosphor Bronze (QSn4-0.3) 21.2 0.01
SC-350-0197-0577-0204 3.5 mm 19.69 mm 12.69 mm 57.67 mm 23.643 316 Stainless Steel 14.4 97.17
SC-120-0092-0397-0084 1.2 mm 9.17 mm 6.77 mm 39.66 mm 1.534 Carbon Spring Steel Wire (SWC) 27.2 6.78
SC-350-0462-0946-0416 3.5 mm 46.19 mm 39.19 mm 94.62 mm 0.743 304 Stainless Steel 23.4 5.5
SC-050-0055-0050-0287 0.5 mm 5.47 mm 4.47 mm 5.03 mm 0.952 Music Wire (SWP-A) 7.3 0.86
SC-800-0527-1165-0124 8 mm 52.74 mm 36.74 mm 116.51 mm 37.954 Inconel X-750 12.9 408.01
SC-700-0524-2361-0034 7 mm 52.38 mm 38.38 mm 236.14 mm 7.803 304 Stainless Steel 29.4 137.79
SC-150-0169-0296-0093 1.5 mm 16.92 mm 13.92 mm 29.64 mm 0.478 Phosphor Bronze (QSn4-0.3) 16.8 1.79
SC-1000-1061-2786-0152 10 mm 106.12 mm 86.12 mm 278.56 mm 5.946 65Mn Spring Steel 20.7 337.4
SC-800-0516-1327-0280 8 mm 51.58 mm 35.58 mm 132.67 mm 61.86 65Mn Spring Steel 9.9 2277.06
SC-700-0421-0907-0401 7 mm 42.14 mm 28.14 mm 90.7 mm 84.064 Oil-Tempered Spring Wire (SWO) 8 2272.25
SC-600-0566-1446-0202 6 mm 56.57 mm 44.57 mm 144.64 mm 5.27 301 Stainless Steel 17.4 178.14
SC-040-0050-0069-0313 0.4 mm 4.98 mm 4.18 mm 6.87 mm 0.203 Music Wire (SWP-A) 15 0.13
SC-300-0142-0421-0291 3 mm 14.19 mm 8.19 mm 42.06 mm 60.073 301 Stainless Steel 10.3 510.62
SC-180-0145-0269-0113 1.8 mm 14.5 mm 10.9 mm 26.93 mm 5.262 316 Stainless Steel 10.4 35.62
SC-1000-1485-3141-0045 10 mm 148.5 mm 128.5 mm 314.06 mm 1.189 304 Stainless Steel 28.3 25.15
SC-040-0036-0061-0392 0.4 mm 3.63 mm 2.83 mm 6.12 mm 1.018 Music Wire (SWP-B) 9.4 1.79
SC-020-0046-0046-0346 0.2 mm 4.6 mm 4.2 mm 4.6 mm 0.01 Music Wire (SWP-B) 20 0
SC-1200-1142-5184-0399 12 mm 114.24 mm 90.24 mm 518.4 mm 6.085 301 Stainless Steel 29 751.67
SC-500-0564-0426-0176 5 mm 56.37 mm 46.37 mm 42.55 mm 9.687 65Mn Spring Steel 6.2 62.97

Rate: N/mm; maximum load: N. Dimensions are in millimeters.

Engineering Data

Typical Dimensions & Design Data

Use these data points to compare geometry, material and working parameters when defining your custom spring. Final values are reviewed and confirmed for the actual assembly before production.

ConfigurationData typeKey parametersMaterial / basis
Engineering reference Engineering Data
  • Construction type: Conical Compression Spring
  • Use / availability status: Custom / made-to-order
 Per application / drawing
Engineering Data 02 Manufacturing Range
  • Round-wire Wire diameter minimum: 0.038 mm
  • Round-wire Wire diameter maximum: 15.875 mm
  • Reference parameter: 50.8 mm
 Common spring steels, stainless steels and alloys
Engineering Data 03 Manufacturing Range
  • Section shape: Round / square / rectangular / special section
  • Data use: Feasibility / RFQ
 Per drawing
Typical Configuration 04Data point Typical Configuration
  • Wire diameter: 0.75 mm
  • Large-end OD: 9.14 mm
  • Large-end ID: 7.64 mm
  • Small-end ID: 1.68 mm
  • Free height: 6.35 mm
  • Spring rate: 4.83 N/mm
 Stainless steel
Typical Configuration 05Data point Typical Configuration
  • Wire diameter: 0.75 mm
  • Large-end OD: 10.67 mm
  • Large-end ID: 9.17 mm
  • Small-end ID: 4.04 mm
  • Free height: 6.35 mm
  • Spring rate: 2.87 N/mm
 Stainless steel
Typical Configuration 06Data point Typical Configuration
  • Wire diameter: 0.75 mm
  • Large-end OD: 10.67 mm
  • Large-end ID: 9.17 mm
  • Small-end ID: 3.25 mm
  • Free height: 7.92 mm
  • Spring rate: 2.54 N/mm
 Stainless steel

Design note: dimensions, force / torque, material, tolerances, fatigue life and compliance are finalized against your drawing and operating conditions during quotation.

Next Design Decisions

Next Steps for Your Spring Design

Once the spring style is selected, confirm how it works in the assembly, which material suits the environment, how it will be manufactured and which dimensions and performance points should be controlled on the drawing.

Applications

Where this spring style fits

Review best-fit uses, assembly constraints and situations where another spring style may be a better choice.

View application guidance →

Materials

Choose the material for the environment

The same spring materials used for conventional compression springs can be considered, but material strength and formability must be checked against the changing coil diameters and required travel.

Compare spring materials →

Manufacturing

Plan prototype and production

Review forming, heat treatment, secondary operations, inspection and the path from first samples to repeat production.

View manufacturing capabilities →

Engineering Data

Open matching engineering guides

Matching material and wire-diameter pages provide additional design data for material and size selection.

Open Spring Engineering Guide →

Material Direction

Common Material Families to Review

The links below are selection guides, not a claim that every grade is suitable for every size or load.

Carbon & Alloy Spring SteelsSelection guide Stainless Steel Spring MaterialsSelection guide Copper Alloy Spring MaterialsSelection guide Nickel & High-Temperature Spring AlloysSelection guide

Related Spring Design Guides

Review the design and measurement requirements for this spring family.

Engineering Support

Spring Engineering Guides

Use these guides to compare material, wire diameter and standard requirements before finalizing the product drawing.

Material data 65Mn Spring Steel Compression Springs Engineering Data 13 matching conical compression springs data rows are included in the category. Material data 301 Stainless Steel Compression Springs Engineering Data 12 matching conical compression springs data rows are included in the category. Material data Music Wire (SWP-B) Compression Springs Engineering Data 12 matching conical compression springs data rows are included in the category. Wire diameter 0.2 mm Compression Springs Engineering Data 4 matching conical compression springs data rows are included in the category. Wire diameter 1.2 mm Compression Springs Engineering Data 8 matching conical compression springs data rows are included in the category. Wire diameter 3.5 mm Compression Springs Engineering Data 4 matching conical compression springs data rows are included in the category.

Compare Designs

Use these alternatives when the available space, connection style, travel or force direction changes.

Cylindrical Compression Springs manufactured by CustomSprings

Compression Springs

Cylindrical Compression Springs

A straight, constant-diameter coil for predictable axial force where the spring works inside a bore, around a guide, or between two flat seats.

Tower-Shaped Compression Springs manufactured by CustomSprings

Compression Springs

Tower-Shaped Compression Springs

A stepped or strongly tapered compression spring built for compact collapse, nested coils, and assemblies where the available diameter changes along the spring height.

Variable-Diameter Compression Springs manufactured by CustomSprings

Compression Springs

Variable-Diameter Compression Springs

A compression spring with a deliberately changing coil diameter used to fit non-uniform spaces, tune stability, or shape how the spring responds through its travel.

Product Questions

Conical Compression Springs FAQ

Will every conical spring compress nearly flat?

No. A conical appearance does not guarantee nesting. The diameters, wire size, pitch and end geometry must be coordinated so adjacent turns have room to pass or stack as intended.

Which end of a conical spring should face the moving part?

That depends on the pocket, guide and stability requirement. The drawing should define orientation whenever the two ends are not interchangeable.

RFQ

Send the Working Requirement

A drawing is ideal. If you do not have one yet, provide the dimensions, load or torque, travel, environment and expected quantity that matter in the assembly.

CustomSprings Engineering Catalog

Request This Spring

Send your dimensions, quantity and drawing for engineering review.

Request a Custom Quote

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