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Standard Formed Bellows



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.


IF standard products (formed bellows with JIS vacuum flanges)

 

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
※左右にフリックしてご覧いただけます。
* For drawings, right click and click the “Save File” button.    (Unit:mm)
IF standard products
Model Bellows Flange Operating
range of L
Spring
constant
(N/mm)
Effective
area
(cm2)
Product
drawing
download
【PDF】
Inner
diameter
Outer
diameter
Length Outer
diameter
Plate
thickness
PCD Mounting
hole
Bi Bo D T C -
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  88 ~ 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

CF standard products (formed bellows with conflat 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 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
※左右にフリックしてご覧いただけます。
* For drawings, right click and click the “Save File” button.    (Unit:mm)
CF standard products
Model Bellows Flange Operating
range of L
Spring
constant
(N/mm)
Effective
area
(cm2)
Product
drawing
download
【PDF】
Inner
diameter
Outer
diameter
length Outer
diameter
Plate
thickness
PCD Mounting
hole
Bi Bo D T C -
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  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  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  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  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  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  3D

IC standard products

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
※左右にフリックしてご覧いただけます。
* For drawings, right click and click the “Save File” button.    (Unit:mm)
IC standard products
Model Bellows Flange Operating
range of L
Spring
constant
(N/mm)
Effective
area
(cm2)
Product
drawing
download
【PDF】
Inner
diameter
Outer
diameter
Length Outer
diameter
Plate
thickness
Mounting
hole
Bi Bo D T 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 2D 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

KF standard products (Formed bellows with ISO KF flanges)


They can be used for connecting KF flanges with use of clamp couplings.
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
* For drawings, right click and click the “Save File” button.    (Unit:mm)
KF standard products (Formed bellows with ISO KF flanges)
Model Bellows Flange Operating
range of L
Spring
constant
(N/mm)
Effective
area
(cm2)
Product
drawing
download
【PDF】
Inner
diameter
Outer
diameter
Length Outer
diameter
Inner
diameter
Length
Bi Bo D A t
KF10 12.9 19 50 30 12.2 20  87 ~ 93  15.7 2.0 2D 3D
KF16 16.1 23 50 30 17.2 20  86 ~ 94  14.7 3.0 2D 3D
KF25 22.9 33 65 40 26.2 20  96 ~ 111 7.0 6.1 2D 3D
KF40 43.6 58 75 55 41.2 20  100 ~ 130 5.4 20.3 2D 3D
KF50 50.1 65 85 75 52.2 20  110 ~ 140 5.2 26.0 2D 3D
KF63 76.3 92 85 87 70.2 20  108 ~ 142 7.6 55.6 2D 3D
KF80 90.1 109 100 114 83.2 25  130 ~ 170 5.3 77.8 2D 3D
KF100 106.5 125 100 134 102.2 25  130 ~ 170 6.9 105.2 2D 3D

PF standard products (Formed bellows with end pipes)

Pressure conditions (Intermal) 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
* For drawings, right click and click the “Save File” button.    (Unit:mm)
PF standard products (Formed bellows with end pipes)
Model Bellows End pipe Operating
range of L
Spring
constant
(N/mm)
Effective
constant
(cm2)
Product
drawing
download
【PDF】
Inner
diameter
Outer
diameter
Length Outer
diameter
thickness Length
Bi Bo D t1 T
PF10 12.9 19 50 17.3 1.65 10  67 ~ 73  15.7 2.0 2D 3D
PF16 16.1 23 50 21.7 2.1 10  66 ~ 74  14.7 3.0 2D 3D
PF25 22.9 33 65 27.2 2.1 15  87 ~ 103 7.0 6.1 2D 3D
PF40 43.6 58 75 42.7 2.8 15  90 ~ 120 5.4 20.3 2D 3D
PF50 50.1 65 85 60.5 2.8 20  110 ~ 140 5.2 26.0 2D 3D
PF63 76.3 92 85 76.3 3.0 20  108 ~ 142 7.6 55.6 2D 3D
PF80 90.1 109 100 89.1 3.0 20  120 ~ 160 5.3 77.8 2D 3D
PF100 106.5 125 100 114.3 3.0 25  130 ~ 170 6.9 105.2 2D 3D

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

Pressure conditions (Internal) vacuum
(External) atmospheric pressur
Temperture 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
※左右にフリックしてご覧いただけます。
* For drawings, right click and click the “Save File” button.    (Unit:mm)
KP standard products(Formed bellows with KF flanges +Pipe end)
Model Bellows Flange End pipes Overall length Spring
constant
(N/mm)
Effective
area
(cm2)
Procuct
drawing
download
【PDF】
Inner
diameter
Outer
diameter
Length Outer
diameter
Length Outer
diameter
thickness Length Unrestricted
length
Operating
range
Bi Bo D T A t1 T L L
KP10 12.9 19 50 30 20 17.3 1.65 10 80 77 ~ 83 15.7 2.0 2D 3D
KP16 16.1 23 50 30 20 21.7 2.1 10 80 76 ~ 84 14.7 3.0 2D 3D
KP25 22.9 33 65 40 20 27.2 2.1 15 100 92 ~ 108 7.0 6.1 2D 3D
KP40 43.6 58 75 55 20 42.7 2.8 15 110 95 ~ 125 5.4 20.3 2D 3D
KP50 50.1 65 85 75 20 60.5 2.8 20 125 110 ~ 140 5.2 26.0 2D 3D
KP63 76.3 92 85 87 20 76.3 3.0 20 125 108 ~ 142 7.6 55.6 2D 3D
KP80 90.1 109 100 114 25 89.1 3.0 20 145 125 ~ 165 5.3 77.8 2D 3D
KP100 106.5 125 100 134 25 114.3 3.0 25 150 130 ~ 170 6.9 105.2 2D 3D

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