Standard formed bellows 2Product catalogCAD drawing

Our line up includes six types of formed bellows with a flange or fittings at both ends.


All can be used under the following pressure, temperature, and specification life conditions to obtain predetermined operating strokes.The overall length of the bellows offered as standard products can be set as desired within a range that can meet the bellows performance as you request. Please feel free to ask us.


* For delivery time and price, feel free to ask us using the standard product estimate request form.


Detailed information about IF, CF, and IC standard products.

Technical information

How to select standard formed bellows

KF standard products (Formed bellows with ISO KF flanges)

They can be used for connecting KF flanges with use of clamp couplings.

CAD drawing download (member registration required)

With NW flanges
Pressure conditions (Internal) vacuum (External) atmospheric pressure
Temperature conditions 20°C (baking temp. max. 250°C)
Leak rate 1×10-9 Pa・m3/s or less
Bellows material SUS316L
Flange material SUS316
Flange shape ISO KF flange
Repetition life 10,000 repetitions
Model Bellows Flange Operating
range of L
Spring
constant
(N/mm)
Effective
area
(cm2)
Product
drawing
download
Inner
diameter
Outer
diameter
Length Outer
diameter
Inner
diameter
Length
Bi Bo PDF
KF10 12.9 19 50 30 12.2 20 87~93 15.7 2.0 2D_pdf
3D_pdf
KF16 16.1 23 50 30 17.2 20 86~94 14.7 3.0 2D_pdf
3D_pdf
KF25 22.9 33 65 40 26.2 20 96~111 7.0 6.1 2D_pdf
3D_pdf
KF40 43.6 58 75 55 41.2 20 100~130 5.4 20.3 2D_pdf
3D_pdf
KF50 50.1 65 85 75 52.2 20 110~140 5.2 26.0 2D_pdf
3D_pdf
KF63 76.3 92 85 87 70.2 20 108~142 7.6 55.6 2D_pdf
3D_pdf
KF80 90.1 109 100 114 83.2 25 130~170 5.3 77.8 2D_pdf
3D_pdf
KF100 106.5 125 100 134 102.2 25 130~170 6.9 105.2 2D_pdf
3D_pdf

(Unit:mm)

* For drawings, right click and click the “Save File” button.

PF standard products (Formed bellows with end pipes)

CAD drawing download (member registration required)

With pipe end
Pressure conditions (Internal) vacuum (External) atmospheric pressure
Temperature conditions 20°C (baking temp. max. 250°C)
Leak rate 1×10-9 Pa・m3/s or less
Bellows material SUS316L
Flange material SUS316
Flange shape End pipe
Repetition life 10,000 repetitions
Model Bellows End pipe Operating
range of L
Spring
constant
(N/mm)
Effective
area
(cm2)
Product
drawing
download
Inner
diameter
Outer
diameter
Length Outer
diameter
thickness Length
Bi Bo t1 PDF
PF10 12.9 19 50 17.3 1.65 10 67~73 15.7 2.0 2D_pdf
3D_pdf
PF16 16.1 23 50 21.7 2.1 10 66~74 14.7 3.0 2D_pdf
3D_pdf
PF25 22.9 33 65 27.2 2.1 15 87~103 7.0 6.1 2D_pdf
3D_pdf
PF40 43.6 58 75 42.7 2.8 15 90~120 5.4 20.3 2D_pdf
3D_pdf
PF50 50.1 65 85 60.5 2.8 20 110~140 5.2 26.0 2D_pdf
3D_pdf
PF63 76.3 92 85 76.3 3.0 20 108~142 7.6 55.6 2D_pdf
3D_pdf
PF80 90.1 109 100 89.1 3.0 20 120~160 5.3 77.8 2D_pdf
3D_pdf
PF100 106.5 125 100 114.3 3.0 25 130~170 6.9 105.2 2D_pdf
3D_pdf

(Unit:mm)

* For drawings, right click and click the “Save File” button.

KP standard products(Formed bellows with KF flanges +Pipe end)

CAD drawing download (member registration required)

NWflanges + end pipes
Pressure conditions ((Internal) vacuum (External) atmospheric pressure
Temperature conditions 20°C (baking temp. max. 250°C)
Leak rate 1×10-9 Pa・m3/s or less
Bellows material SUS316L
Flange material SUS316
Flange shape ISO KF flanges+ end pipes
Repetition life 10,000 repetitions
Model Bellows Flange End pipes Overall
length
Spring
constant
(N/mm)
Effective
area
(cm2)
Product
drawing
download
Inner
diameter
Outer
diameter
Length Unrestricted
length
Operating
range
Bi Bo PDF
KP10 12.9 19 50 See KF
standard
products.
See PF
standard
products.
80 77~83 15.7 2.0 2D_pdf
3D_pdf
KP16 16.1 23 50 80 76~84 14.7 3.0 2D_pdf
3D_pdf
KP25 22.9 33 65 100 92~108 7.0 6.1 2D_pdf
3D_pdf
KP40 43.6 58 75 110 95~125 5.4 20.3 2D_pdf
3D_pdf
KP50 50.1 65 85 125 110~140 5.2 26.0 2D_pdf
3D_pdf
KP63 76.3 92 85 125 108~142 7.6 55.6 2D_pdf
3D_pdf
KP80 90.1 109 100 145 125~165 5.3 77.8 2D_pdf
3D_pdf
KP100 106.5 125 100 150 130~170 6.9 105.2 2D_pdf
3D_pdf

(Unit:mm)

* For drawings, right click and click the “Save File” button.

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