Standard formed bellows 1Product catalogCAD drawing

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


All can be used under the following pressure, temperature, and specific 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 KF, KP, and PF standard products.

Technical information

How to select standard formed bellows

IF standard products (formed bellows with JIS vacuum flanges)

CAD drawing download (member registration required)

if
Pressure conditions (Internal) vacuum (External) atmospheric pressure
Temperature conditions 20°C (baking temp. max. 250°C)
Leak rate 1×10-7 Pa・m3/s or lesss
Bellows material SUS316L
Flange material SUS304
Flange shape JIS B 2290 flange A: VG
flange B: VF
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
Plate
thickness
PCD Mounting
hole
Bi Bo - PDF
IF20 22.9 33.0 44 80 8 60 4-10 54~64 10.0 6.1 2D
3D
IF25 28.6 40.0 49 90 8 70 4-10 57~70 8.4 9.2 2D
3D
IF40 43.6 58.0 70 105 10 85 4-10 74~100 5.1 20.3 2D
3D
IF50 50.1 65.0 85 120 10 100 4-10 85~118 5.0 26.0 2D
3D
IF65 61.9 80.0 90 145 10 120 4-12 83~128 3.6 39.5 2D
3D
IF80 77.6 95.0 86 160 12 135 4-12 89~124 6.0 58.5 2D
3D
IF100 106.5 125.0 86 185 12 160 8-12 88~124 7.8 105.2 2D
3D
IF125 134.7 153.0 76 210 12 185 8-12 82~112 11.7 162.5 2D
3D
IF150 157.2 176.0 76 235 12 210 8-12 82~112 13.6 218.0 2D
3D
IF200 199.8 230.0 93 300 16 270 8-15 98~144 33.2 362.7 2D
3D
IF250 254.3 290.0 93 350 16 320 12-15 105~140 80.9 581.7 2D
3D
IF300 306.0 340.0 118 400 16 370 12-15 130~162 92.9 819.4 2D
3D
IF350 340.2 378.2 110 450 20 420 12-15 128~162 90.5 1013.4 2D
3D
IF400 380.9 423.7 110 520 20 480 12-19 128~163 80.3 1271.1 2D
3D
IF500 497.0 528.0 106 625 22 585 16-19 134~160 530.6 2062.9 2D
3D

(Unit:mm)

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

CF standard products (formed bellows with conflat flanges)

CAD drawing download (member registration required)

cf
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 SUS304L
Flange shape Standard type:
Stationary at both ends with through holes
Letter “K” suffix attached to model number:
Stationary×rotating with through holes
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
Plate
thickness
PCD Mounting
hole
Bi Bo -
CF34 9.7 13.5 30.6 33.8 7.2 27.0 6-4.4 44~46 58.5 1.1 2D
3D
CF34_K 2D
3D
CF70 30.2 41.0 54.6 69.3 12.7 58.7 6-6.8 72~88 9.1 10.0 2D
3D
CF70_K 2D
3D
CF114 50.1 65.0 60.0 113.5 17.5 92.2 8-8.5 83~107 6.8 26.0 2D
3D
CF114_K 2D
3D
CF152 90.1 107.0 65.4 151.6 19.8 130.3 16-8.5 92~118 9.7 76.3 2D
3D
CF152_K 2D
3D
CF203 134.7 153.0 70.2 202.4 22.4 181.1 20-8.5 101~129 12.8 162.5 2D
3D
CF203_K 2D
3D
CF253 180.0 208.0 80.8 253.2 24.6 231.9 24-8.5 114~146 42.5 295.6 2D
3D
CF253_K 2D
3D

(Unit:mm)

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

IC standard products

formed bellows for conflat flange connection and pipe end connection

CAD drawing download (member registration required)

ic
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 SUS304L
Flange shape For conflat flange connection
and end pipe connection
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
Plate
thickness
Mounting
hole
Bi Bo LY
IC18A 12.9 19 50 18.0 1.0 10 67~72 17.0 2.0 2D
3D
IC18B 100 114~124 8.6 2D
3D
IC25A 17.4 26 50 25.4 1.5 10 65~73 9.2 3.7 2D
3D
IC25B 100 110~126 4.7 2D
3D
IC32A 22.9 33 50 31.8 1.5 10 64~74 9.4 6.1 2D
3D
IC32B 100 108~128 4.8 2D
3D
IC40A 30.2 42 50 38.1 1.5 10 63~74 7.7 10.2 2D
3D
IC40B 100 105~130 3.9 3D
3D
IC65A 50.1 65 50 63.5 2.0 15 67~88 8.1 26.0 2D
3D
IC65B 100 108~144 4.3 2D
3D
IC100A 90.1 109 50 101.6 2.0 15 64~90 9.3 77.8 2D
3D
IC100B 100 102~148 5.0 2D
3D
IC150A 134.7 153 50 152.4 3.0 20 77~98 17.1 162.5 2D
3D
IC150B 100 115~156 9.0 2D
3D
IC200A 180.0 213 45 203.2 3.0 30 86~117 47.1 303.3 2D
3D
IC200B 90 112~175 24.1 2D
3D

(Unit:mm)

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

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