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Standard Welded Bellows (discrete)
These standard products are simple welded bellows without fittings.They can be used where welding is carried out by the customer or where customer made fittings are supplied and welded by us.
For delivery times and prices please contact us using the enquiry form.
Notes on drawings.
Two types of drawings are available: Corrugated End fittings and Y-Shaped End fittings.Please note that the corrugated end fittings drawings show dimensions including end fittings.Bellows lengths can be modified as required to meet specifications.
Specifications common to standard welded bellows (discrete)
| Pressure Condition | (Internal) Vacuum (External) atmospheric pressure |
|---|---|
| Temperature Conditions | Ordinary temperature (baking temp. max 250℃) |
| Leak rate | 1×10-9 Pa・m3/s or less |
| Bellows Material | SUS316L・AM350 equivqlent |
| Repeat Life | 10,000, 100,000 or 1,000,000 times (For AM350 equivqlent, 10,000 repetitions are not available) |
NS Standard Products (Material：SUS316L)
10,000 repetiton life series
(Unit：mm)
■Product drawing download
■CAD drawing download (Member registration required)
| 10,000 repetiton life series | ||||||||
|---|---|---|---|---|---|---|---|---|
| Model | Inner diameter |
Outer diameter |
Specifications per 10mm displacement |
Effective area (cm2) |
1-block maximum allowable displacement (mm) |
|||
| Free length |
Operating range |
Axial direction spring constant (N / mm) |
||||||
| Lmin | Lmax | |||||||
| NS122-1 | 8 | 22 | 15 | 7 | 17 | 3.29 | 1.77 | 40 |
| NS130-1 | 17 | 30 | 13 | 6 | 16 | 5.82 | 4.34 | 60 |
| NS136-1 | 22 | 36 | 12 | 5 | 15 | 5.57 | 6.61 | 80 |
| NS151-1 | 36 | 51 | 10 | 4 | 14 | 7.13 | 14.9 | 120 |
| NS170-1 | 50 | 70 | 9 | 4 | 14 | 10.41 | 28.3 | 150 |
| NS190-1 | 60 | 90 | 9 | 4 | 14 | 11.07 | 44.2 | 130 |
| NS194-1 | 70 | 94 | 10 | 5 | 15 | 12.80 | 52.8 | 140 |
| NS1109-1 | 79 | 109 | 10 | 5 | 15 | 31.53 | 69.4 | 160 |
| NS1120-1 | 90 | 120 | 10 | 5 | 15 | 27.75 | 86.6 | 170 |
| NS1150A-1 | 100 | 150 | 10 | 5 | 15 | 31.21 | 122.7 | 170 |
| NS1150B-1 | 120 | 150 | 10 | 5 | 15 | 23.50 | 143.1 | 190 |
| NS1210-1 | 160 | 210 | 10 | 5 | 15 | 39.57 | 268.8 | 210 |
| NS1270-1 | 206 | 270 | 9 | 4 | 14 | 30.20 | 444.9 | 150 |
| NS1320-1 | 260 | 320 | 9 | 4 | 14 | 41.94 | 660.5 | 190 |
【PDF】Corrugated or Noncorrugated
■CAD drawing download (Member registration required)
100,000 repetiton life series
※左右にフリックしてご覧いただけます。
(Unit：mm)
■Product drawing download
■CAD drawing download (Member registration required)
| 100,000 repetiton life series | ||||||||
|---|---|---|---|---|---|---|---|---|
| Model | Inner diameter |
Outer diameter |
Specifications per 10mm displacement |
Effective area (cm2) |
1-block maximum allowable displacement (mm) |
|||
| free length |
Operating range |
Axial direction spring constant (N / mm) |
||||||
| Lmin | Lmax | |||||||
| NS1022-1 | 8 | 22 | 23 | 15 | 25 | 2.14 | 1.77 | 20 |
| NS1030-1 | 17 | 30 | 19 | 11 | 21 | 4.07 | 4.34 | 40 |
| NS1036-1 | 22 | 36 | 18 | 10 | 20 | 3.72 | 6.61 | 50 |
| NS1051-1 | 36 | 51 | 15 | 8 | 18 | 4.75 | 14.9 | 80 |
| NS1070-1 | 50 | 70 | 15 | 7 | 17 | 6.62 | 28.3 | 100 |
| NS1090-1 | 60 | 90 | 13 | 6 | 16 | 7.38 | 44.2 | 100 |
| NS1094-1 | 70 | 94 | 11 | 6 | 16 | 11.38 | 52.8 | 130 |
| NS10109-1 | 79 | 109 | 13 | 7 | 17 | 23.65 | 69.4 | 130 |
| NS10120-1 | 90 | 120 | 13 | 7 | 17 | 20.81 | 86.6 | 140 |
| NS10150A-1 | 100 | 150 | 15 | 8 | 18 | 20.81 | 122.7 | 130 |
| NS10150B-1 | 120 | 150 | 13 | 7 | 17 | 17.63 | 143.1 | 160 |
| NS10210-1 | 160 | 210 | 13 | 6 | 16 | 31.66 | 268.8 | 140 |
| NS10270-1 | 206 | 270 | 15 | 7 | 17 | 18.12 | 444.9 | 110 |
| NS10320-1 | 260 | 320 | 14 | 7 | 17 | 25.16 | 660.5 | 140 |
【PDF】Corrugated or Noncorrugated
■CAD drawing download (Member registration required)
1,000,000 repetiton life series
※左右にフリックしてご覧いただけます。
(Unit：mm)
■Product drawing download
■CAD drawing download (Member registration required)
| 1,000,000 repetiton life series | ||||||||
|---|---|---|---|---|---|---|---|---|
| Model | Inner diameter |
Outer diameter |
Specifications per 10mm displacement |
Effective area (cm2) |
1-block maximum allowable displa |
|||
| free length |
Operating range |
Axial direction spring constant (N / mm) |
||||||
| Lmin | Lmax | |||||||
| NS10022-1 | 8 | 22 | 31 | 24 | 34 | 1.54 | 1.77 | 20 |
| NS10030-1 | 17 | 30 | 25 | 18 | 28 | 3.02 | 4.34 | 30 |
| NS10036-1 | 22 | 36 | 24 | 16 | 26 | 2.79 | 6.61 | 40 |
| NS10051-1 | 36 | 51 | 22 | 14 | 24 | 3.39 | 14.9 | 50 |
| NS10070-1 | 50 | 70 | 21 | 14 | 24 | 4.55 | 28.3 | 70 |
| NS10090-1 | 60 | 90 | 17 | 10 | 20 | 5.53 | 44.2 | 80 |
| NS10094-1 | 70 | 94 | 16 | 9 | 19 | 7.88 | 52.8 | 100 |
| NS100109-1 | 79 | 109 | 18 | 10 | 20 | 17.20 | 69.4 | 100 |
| NS100120-1 | 90 | 120 | 16 | 9 | 19 | 16.65 | 86.6 | 120 |
| NS100150A-1 | 100 | 150 | 20 | 13 | 23 | 15.61 | 122.7 | 100 |
| NS100150B-1 | 120 | 150 | 18 | 10 | 20 | 12.82 | 143.1 | 120 |
| NS100210-1 | 160 | 210 | 18 | 10 | 20 | 22.61 | 268.8 | 130 |
| NS100270-1 | 206 | 270 | 21 | 13 | 23 | 12.94 | 444.9 | 110 |
| NS100320-1 | 260 | 320 | 17 | 10 | 20 | 20.97 | 660.5 | 150 |
【PDF】Corrugated or Noncorrugated
■CAD drawing download (Member registration required)
NA Standard Products (Material：AM350 equivalent)
100,000 repetiton life series
※左右にフリックしてご覧いただけます。
(Unit：mm)
■Product drawing download
■CAD drawing download (Member registration required)
| 100,000 repetiton life series | ||||||||
|---|---|---|---|---|---|---|---|---|
| Model | Inner diameter |
Outer diameter |
Specifications per 10mm displacement |
Effective area (cm2) |
1-block maximum allowable displacement (mm) |
|||
| free length |
Operating range |
Axial direction spring constant (N / mm) |
||||||
| Lmin | Lmax | |||||||
| NA1022-1 | 8 | 22 | 20 | 12 | 22 | 2.47 | 1.77 | 30 |
| NA1030-1 | 17 | 30 | 16 | 8 | 18 | 4.79 | 4.34 | 50 |
| NA1036-1 | 22 | 36 | 15 | 7 | 17 | 4.05 | 6.61 | 60 |
| NA1051-1 | 36 | 51 | 13 | 6 | 16 | 5.97 | 14.9 | 90 |
| NA1070-1 | 50 | 70 | 13 | 6 | 16 | 6.19 | 28.3 | 100 |
| NA1090-1 | 60 | 90 | 11 | 5 | 15 | 7.40 | 44.2 | 110 |
| NA1094-1 | 70 | 94 | 10 | 5 | 15 | 12.74 | 52.8 | 140 |
| NA10109-1 | 79 | 109 | 11 | 6 | 16 | 27.02 | 69.4 | 150 |
| NA10120-1 | 90 | 120 | 11 | 6 | 16 | 21.87 | 86.6 | 160 |
| NA10150A-1 | 100 | 150 | 13 | 6 | 16 | 24.97 | 122.7 | 150 |
| NA10150B-1 | 120 | 150 | 11 | 6 | 16 | 21.25 | 143.1 | 170 |
| NA10210-1 | 160 | 210 | 10 | 5 | 15 | 39.57 | 268.8 | 210 |
| NA10270-1 | 206 | 270 | 12 | 5 | 15 | 23.90 | 444.9 | 80 |
| NA10320-1 | 260 | 320 | 11 | 5 | 15 | 33.19 | 660.5 | 100 |
【PDF】Corrugated or Noncorrugated
■CAD drawing download (Member registration required)
1,000,000 repetiton life series
※左右にフリックしてご覧いただけます。
(Unit：mm)
■Product drawing download
■CAD drawing download (Member registration required)
| 1,000,000 repetiton life series | ||||||||
|---|---|---|---|---|---|---|---|---|
| Model | Inner diameter |
Outer diameter |
Specifications per 10mm displacement |
Effective area (cm2) |
1-block maximum allowable displacement (mm) |
|||
| Free length |
Operating range |
Axial direction spring constant (N / mm) |
||||||
| Lmin | Lmax | |||||||
| NA10022-1 | 8 | 22 | 22 | 14 | 24 | 2.24 | 1.77 | 20 |
| NA10030-1 | 17 | 30 | 18 | 10 | 20 | 4.29 | 4.34 | 50 |
| NA10036-1 | 22 | 36 | 17 | 9 | 19 | 3.57 | 6.61 | 60 |
| NA10051-1 | 36 | 51 | 14 | 7 | 17 | 5.54 | 14.9 | 90 |
| NA10070-1 | 50 | 70 | 15 | 7 | 17 | 5.63 | 28.3 | 90 |
| NS10090-1 | 60 | 90 | 13 | 6 | 16 | 6.58 | 44.2 | 100 |
| NA10094-1 | 70 | 94 | 11 | 6 | 16 | 11.32 | 52.8 | 130 |
| NA100109-1 | 79 | 109 | 11 | 6 | 16 | 27.02 | 69.4 | 150 |
| NS100120-1 | 90 | 120 | 11 | 6 | 16 | 21.87 | 86.6 | 160 |
| NA100150A-1 | 100 | 150 | 13 | 6 | 16 | 24.97 | 122.7 | 150 |
| NA100150B-1 | 120 | 150 | 13 | 7 | 17 | 18.60 | 143.1 | 160 |
| NA100210-1 | 160 | 210 | 13 | 6 | 16 | 31.66 | 268.8 | 140 |
| NA100270-1 | 206 | 270 | 15 | 7 | 17 | 19.12 | 444.9 | 120 |
| NA100320-1 | 260 | 320 | 14 | 7 | 17 | 26.55 | 660.5 | 140 |
【PDF】Corrugated or Noncorrugated
■CAD drawing download (Member registration required)
End fittings and fitting shapes
Welding grooves for fittings are also important dimensions that affect the performance of bellows.
When using our bellows, process fittings to the following dimensions.
(Unit：mm)
※The plate thickness of Y-type end fittings is 0.4mm.
| End fittings and fitting shapes | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Bellows Size | Y-type end fitting | Wave-shaped end fitting | |||||||
| Fitting length | D | A | Fitting length | D | A | e | f | ||
| 8×22 | 3 | 21.9 | 0.2 | 1.5 | 21.8 | 0.2 | C1.0 | 0.8 | |
| 17×30 | 3 | 30.1 | 0.2 | 1.5 | 30.1 | 0.2 | C1.0 | 0.6 | |
| 22×36 | 3 | 35.9 | 0.2 | 1.5 | 36.0 | 0.2 | C1.0 | 0.8 | |
| 36×51 | 3 | 50.9 | 0.2 | 1.5 | 51.0 | 0.2 | C1.0 | 0.8 | |
| 50×70 | 3 | 69.4 | 0.2 | 1.5 | 69.6 | 0.2 | C1.0 | 1.0 | |
| 60×90 | 4 | 89.4 | 0.2 | - | 89.5 | 0.2 | C1.0 | 1.3 | |
| 70×94 | 4 | 94.0 | 0.2 | - | 93.9 | 0.2 | C1.0 | 1.2 | |
| 79×109 | 4 | 108.9 | 0.2 | - | 108.9 | 0.2 | C1.5 | 1.7 | |
| 90×120 | 4 | 120.2 | 0.2 | - | 119.5 | 0.2 | C1.0 | 1.1 | |
| 100×150 | 4 | 149.3 | 0.2 | - | 149.4 | 0.3 | C1.0 | 1.8 | |
| 120×150 | 4 | 150.2 | 0.2 | - | 149.7 | 0.2 | C1.0 | 2.1 | |
| 160×210 | 5 | 209.2 | 0.2 | - | 208.1 | 0.3 | C3.0 | 2.8 | |
| 206×270 | 5 | 270.4 | 0.2 | - | 270.0 | 0.3 | C3.0 | 2.0 | |
| 260×320 | 5 | 320.3 | 0.2 | - | 318.9 | 0.3 | C3.0 | 2.8 | |
Related Information
Column
Solution Example
Technical Information
Please take a look at the technical information on bellows.
Inquiry
For document requests and inquiries,
Please contact us using the email form below or by phone.
