Belleville Disc Springs

Belleville disc springs (also known as belleville disc washers) were invented by Julien-Francoise Belleville, who was awarded a patent in 1861 for a spring designed like a cone-shaped ring, capable of absorbing large axial forces with relatively small spring travel. Mubea has proudly manufactured Belleville springs in our Daaden, Germany plant since 1960.

Disc springs can be designed to meet the specific requirements of a variety of applications. These requirements can typically be met with springs from Mubea’s standard product line. Our standard product line includes disc springs designed per the requirements of DIN 2093, our own internal factory standards, as well as other specal sizes. Disc springs from our standard product ine are typically available from stock for immediate delivery.

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Disc springs can also be designed with non-standard dimensions. Depending upon the availability of material and tooling requirements, delivery times may be longer.

Stainless Steel Disc Springs

Mubea
P/N
OD
(De, mm)
ID
(De, mm)
Thickness
(t, mm)
LO Weight
(kg/1000)
 
1710068.004.200.400.60.114Quote
17101310.005.200.250.550.112Quote
17101410.005.200.400.70.18Quote
17101510.005.200.500.70.225Quote
17101612.004.200.400.80.311Quote
17101712.004.200.500.80.389Quote
17102412.506.200.500.850.363Quote
17102512.506.200.7010.508Quote
17102714.007.200.500.90.444Quote
17102814.007.200.801.10.711Quote
17103715.008.200.801.20.778Quote
17103916.008.200.601.050.698Quote
17122016.008.200.801.20.94Quote
17104016.008.200.901.251.047Quote
17104418.006.200.701.41.232Quote
17104718.008.200.801.31.266Quote
17104818.008.201.001.51.582Quote
17105018.009.200.701.21.033Quote
17105118.009.201.001.41.476Quote
17122818.0010.501.001.41.476Quote
17105220.008.200.501.151.026Quote
17105620.008.200.901.51.846Quote
17015920.0010.200.601.21.101Quote
17106020.0010.200.801.351.46Quote
17015820.0010.200.901.41.642Quote
17106220.0010.201.001.551.824Quote
17106320.0010.201.101.552.007Quote
17106522.5011.200.801.451.878Quote
18100122.5011.201.251.752.935Quote
18100223.0012.201.251.852.929Quote
17107225.0012.200.701.62.055Quote
17107325.0012.200.901.62.642Quote
18100425.0012.201.5024.403Quote
17107428.0010.200.801.753.354Quote
18100528.0010.201.252.055.238Quote
17107828.0014.201.001.83.59Quote
18100928.0014.201.252.14.468Quote
18101028.0014.201.502.155.386Quote
17107931.5016.300.801.853.583Quote
18101131.5016.301.252.155.599Quote
18101331.5016.301.752.457.939Quote
18101431.5016.302.002.758.956Quote
18310634.0012.301.502.49.288Quote
18102135.5018.301.252.257.131Quote
18102235.5018.302.002.811.41Quote
18103140.0020.401.502.6510.948Quote
18103645.0022.401.753.0516.434Quote
18105050.0025.402.003.422.872Quote
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Disc Spring Theory

Belleville Washer TheoryAccording to the disc spring theory, Belleville springs (also known as Belleville washers) are shallow conical rings that are subjected to axial loads. Normally, the ring thickness is constant and the applied load is evenly distributed over the upper inside and lower outside edges. Disc springs are generally manufactured from spring steel and can be subjected to static loads, rarely alternating loads, and dynamic loads. Disc springs can meet the most stringent fatigue life and set loss requirements. 

Creating a Belleville Disc Spring

Use the arrows below to navigate through how Belleville disc springs are made.

> <
  • 1. Production
  • 2. Tool Making
  • 3. Raw Material
  • 4. Fine Blanking
  • 5. Flame Cutting
  • 6. Deburring
  • 7. Heat Treating
  • 8. Shot Peening
  • 9. Corrosion Protection
  • 10. Quality Assurance
  • 11. Final Product

Common Disc Spring Alloys

  • Copper Beryllium (CuBe)
  • Cr-Ni-Mo Stainless Steel
  • Nickel-Beryllium (NiBe)
  • Inconel
  • Nimonic
  • SAE Grade Steel
  • Chromoly Steel
  • More Materials

Belleville Washer Features

  • High temperature resistance & High fatigue life
  • Different assemblies can be designed to achieve the desired load characteristics
  • Special materials and various surface coatings available
  • Better space utilization when compared to other spring types
  • Low creep tendency with the correct dimensioning
  • High load capacity with a small spring deflection
  • DIN 2093 standards

DIN 2093 Standards

Group Production Method Surface Finish**)
Upper and lower surfaces µ Inner and outer edges µ
1 stamped, cold-formed, edges rounded R2 < 3.2 R2 < 12.5
2*) stamped, cold-formed, De and Di turned, edges rounded R2 < 6.3 R2 < 6.3
fine-blanked, cold-formed, edges rounded R2 < 6.3 R2 < 3.2
3 cold- or hot-formed, turned on all sides, edges rounded R2 < 12.5 R2 < 12.5
*) Unless otherwise specified, the manufacturing process is left to the discretion of the manufacturer (see Section 5 in DIN 2093).
**) The specified values do not apply to shot-peened disc springs.

Disc Spring Applications

Belleville springs have become indispensable in a host of applications and industries. Belleville disc springs are used everywhere from the automotive, food processing, and chemical industries and found in applications from boilers and industrial furnaces to superconductors and satellites.

They are commonly used in applications requiring high spring force and small deflections. The washers are also used in applications requiring a high degree of safety.

Tolerances For Spring Geometry, Load & Hardness

  Material thickness t or t'
(mm)
allowable tolerance in material thickness t allowable tolerance in free height Io
(mm)
allowable tolerance in spring force F at Io-s during loading with s = 0.75 ho (%) Hardness (HRC)
Group 1 springs without contact surfaces 0.2 to 0.6 + 0.02
- 0.06
+ 0.10
- 0.05
+ 25
- 7.5
42-52
> 0,6 but < 1,25 + 0.03
- 0.09
Group 2 springs without contact surfaces 1.25 to 2.0 + 0.04
- 0.12
+ 0,15
- 0.08
+15
- 7.5
> 2.0 to 3.0 + 0.20
- 0.10
> 3.0 to 3.8 + 0.30
- 0.15
+ 10
- 5
> 3.8 to 6.0 + 0.05
- 0.15
Group 3 springs with contact surfaces > 6.0 to 15 ± 0.10 ± 0.30 ± 5
> 15 to 25 ± 0.12 ± 0.50*
> 25 to 40 ± 0.125 ± 1.0*
* applies only to disc springs with a ratio De/t ≤ 20

When the ratio De/t > 20, a larger tolerance for the free height is typically required. In this case, actual tolerances should be reviewed with Mubea.

Outside diameter De inside diameter Di
De or Di
(mm)
Deh12
(mm)
Allowable
tolerance Dih12(mm)
Concentricity
tolerance for De(mm)
3 to 6 0 to -0,12 0 to +0,12 0,15
> 6 to 10 0 to -0,15 0 to +0,15 0,18
> 10 to 18 0 to -0,18 0 to +0,18 0,22
> 18 to 30 0 to -0,21 0 to +0,21 0,26
> 30 to 50 0 to -0,25 0 to +0,25 0,32
> 50 to 80 0 to -0,30 0 to +0,30 0,60
> 80 to 120 0 to -0,35 0 to +0,35 0,70
> 120 to 180 0 to -0,40 0 to +0,40 0,80
> 180 to 250 0 to -0,46 0 to +0,46 0,92
> 250 to 315 0 to -0,52 0 to +0,52 1,04
> 315 to 400 0 to -0,57 0 to +0,57 1,14
> 400 to 500 0 to -0,63 0 to +0,63 1,26
> 500 to 600 0 to -0,68 0 to +0,68 1,36
Outside diameter De Inside diameter Di

To access our disc springs calculations program or a list of standard parts check out the Downloads page or you may contact our sales experts today for further assistance.

 

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