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ROUND RUBBER BELLOWS

 

The round rubber bellows are the most often used component to protect organs with axial movement, but they are also ideal in case of different movements or lack of movement.
It’s also necessary to choose carefully the size of the bellows, to obtain a proper use and aesthetically pleasant. 

AVAILABLE RANGE: 

The choice is between 300 different sizes of rubber bellows , but these are not available in stock, with some exceptions.
For
urgent needs or measures perfectly adaptable to the device on which the bellows is installed, see also
modular bellows, always in stock.  

CUSTOMIZED:
 
The production of rubber bellows is done with injection moulding technology, using steel moulds already existing, with fixed geometries and not changeable. To get custom sizes or shapes it’s necessary to create a new mould. 

MATERIALS:

Our bellows are typically made of rubber NBR ozone protected, so they are resistant to oil and grease (even if immersed), but also moderately resistant to weather conditions. Some models are made, however, of EPDM rubber, excellent for applications in air and irradiated by the sun, but not resistant to prolonged contact with oils and greases. If requested and for orders above 100 €, it’s possible to produce the same bellows with other materials: Silicone, Neoprene, Dutral, Viton ®, FKM, CR, VMQ, HNBR and others

 

OPTIONS: In addition to the bellows you can consider various options to obtain different characteristics:

Hole for air passage, in case of relatively large internal volume changes

  • Filter for air passage hole, for particularly aggressive environments
  • steel rings o support the form, in case of internal depression
  • Fixing strips plastic collars

FOR A PROPER SELECTION OF BELLOWS:
  • Rubber is elastic, so the collars can widen up to 10-15% of their diameter, see the table below.
  • It is always better to choose the bellows collars smaller, at least a 3% of the diameter on which    must be fitted.
  • The drawing shown below is standard, but many of the bellows in the table do not exactly have a similar geometry, always ask for the specific drawing.
  • Check the correctness of the internal diameter
  • Check if there are no encumbrances for the external diameter

AVAILABLE DIMENSIONS:

Evaluate at the bottom of this page a wide range of size, if you don't find a suitable model, you can use the Universal Bellows (see the home page: "Modular Bellow"). In addition we are able to realize in  30 days a mould as your drawing. 
Just the articles with "yes" in column "Avail." could be ready for delivery, otherwise delivery = 40gg.
 
 

MINIMUM LOT:     
                                                                                                                        
Minimum amount: € 500.
We are ready to study geometry and application together with your engineers and supply the required samples.
For small quantities please contact our dealer. (Click the item in the menu above) 

DRAWINGS:

The drawing below is just indicative, any bellows is similar to that represented, ask the design of specific codes for the right analysis

 

 

    

Code Ø d1 Ø d2 L max L L min Availability
(mm) (mm) (mm) (mm) (mm)
SOF 02X24 2 7 30 24 15 NO
SOF 04X18 4 15,4 25 18 8,5 NO
SOF 04X45 4 10   45 40 NO
SOF 04X66 4 12 66 50 10 NO
SOF 04X70 4 11 100 70 50 NO
SOF 05X57 5 18   57   NO
SOF 05X46 5 25   46   NO
SOF 05X16 5 8   16   NO
SOF 05X40 5 7 40 40 25 NO
SOF 05X45 5 10 55 42 15 NO
SOF 05X60 5 17 80 60 35 NO
SOF AMM 5,8 6,8 55 44 23 YES
SOF 06X48 6 17   48   NO
SOF 07X32 7 16   32   NO
SOF 07X52 7 16   52 35 NO
SOF 07X25 7 14 30 25 12 NO
SOF 07X33 7 25 40 33 12 YES
SOF 08X50 8 20   50   NO
SOF 08X57 8 20 57 57 32 NO
SOF 09X58 9 17   58   NO
SOF 09X25 9 26   25   NO
SOF 09X36 9 11 40 36 28 NO
SOF 09,5X36 9,5 11 40 36 28 NO
SOF 10X20 10 20   20   NO
SOF 10X270 10 20   270 110 YES
SOF 10X38 10 20   38   NO
SOF 10X40 10 10 50 40 20 NO
SOF 10X86 10 10   86 84 NO
SOF 10X36 10 10 40 36 17 NO
SOF 10X90 10 10 110 90 35 NO
SOF 14X62 11 32   62 32 YES
SOF 11X22 11 11   22   NO
SOF 11X47 11 40   47 42 NO
SOF 11X80 11 25 90 80 40 NO
SOF 11X87 11 25 130 77 20 NO
SOF 11X77 11 25 160 77 20 YES
SOF 12X30 12 16 40 30 16 NO
SOF 12X27 12 20 40 27 14 YES
SOF 12X28 12 20   28 7 NO
SOF 14X19 14 18 100 80 65 YES
SOF 14X20  14 24 24 20 10 YES
SOF 14X54 14 33 55 54 30 NO
SOF 14X65 14 50 70 65 48 NO
SOF 14X73 14 33 75 73 40 YES
SOF 14X19 14 18 100 80 65 NO
SOF 15X43 15 46 43 43 20 NO
SOF 15X74 15 36   74   NO
GAL SOF 28172 15 29 28 26 21 YES
SOF 15X95 15 15 110 95 45 NO
SFT.ECO 15 15 120 100 40 YES
SOF 16x20 16 22   20 15 NO
SOF 16X36 16 48 36 36 36 NO
SOF 16x57 16 38 70 57 35 NO
SOF 16x87 16 21 125 87 50 NO
SOF 16X163 16 30 175 163 70 NO
SOF 16X126 16 28 200 126 85 NO
SOF 17X55 17 23 80 55 33 NO
SOF 17X103 17 17 120 103 32 NO
SOF 17X140 17 37 170 140 25 NO
SOF 18X57 18 26   57 50 NO
SOF 18X134 18 54 210 134 70 NO
SOF 40X70 18 33 85 65 27 NO
SOF 19X20 19 20   20 18 NO
SOF 01/A 19 19 40 28 16 NO
SOF 19X70 19 32 110 70 25 NO
SOF 19X90 19 32 160 90 30 NO
SOF 20X40 20 64   40   NO
SOF 20X85 20 46 85 85 50 NO
SOF 20X110 20 100 130 110 17 NO
SOF 20X100 20 20 150 100 50 NO
SOF 20X94 20 28 190 94 50 NO
SOF 20X155 20 20 200 155 75 NO
SOF 20X215 20 32 300 215 90 NO
SOF 21X40 21 35   40   NO
SOF 21X125 21 32 125 120 55 NO
SOF 21X113 21 30 160 113 55 NO
SOF 22X58 22 22   58 55 NO
221/SFTALG 22 24 160 122 50 NO
SOF 22X125 22 32 170 125 60 NO
SOF 22X140 22 18 170 140 45 NO
SOF 22X185 22 30 190 180 90 NO
SOF 23X215 23 95 250 215 60 NO
SOF 24X93 24 24   93 73 NO
SOF 24X100 24 24 100 80 34 NO
SOF 24X145 24 33 175 145 85 NO
SOF 25X23 25 25   23 15 NO
SOF 25X70 25 25   70 35 NO
SOF 25X175 25 25 230 175 46 NO
SOF 25X155 25 40 190 155 40 NO
SOF 26X66 26 26   66 42 NO
SOF 26X90 26 54   90   NO
SOF 26X70 26 49 90 70 50 NO
SOF 26X110 26 86 110     NO
SOF 26X90X52 26 52 200 90 50 NO
SOF 27X104 27 27   104 95 NO
SOF 27X170 27 27   170 55 NO
SOF 22X104 28 30   104 55 NO
SOF 28X120 28 30 130 120 110 NO
SOF 28X160 28 33 200 160 70 NO
SOF 29X60 29 32 60 60 20 NO
SOF 29X55 29 29 70 55 26 NO
SOF 29X78 29 70 100 78 50 NO
SOF 29X150 29 72 200 150 25 NO
SOF 30X79 30 64 85 79 40 NO
SOF 30X68 30 45 90 68 45 NO
SOF 30X70 30 49 90 70 50 NO
SOF 30X135 30 30 157 135 57 NO
SOF 30X155 30 30 210 155 85 NO
SOF 30X130 30 45 210 130 55 NO
SOF 30X164 30 30 220 164 70 NO
SOF 30X170 30 30 280 180 45 NO
SOF 30X182 30 30 250 182 60 NO
SOF 30X210 30 30 340 210 90 NO
SOF 32X70 32 32   70 60 NO
SOF 32X26 32 32   26   NO
SOF 32X85 32 32 100 85 35 NO
SOF 32X170 32 32 290 170 100 NO
SOF 32X200 32 47 300 200 140 NO
SFTC 30/140 33 33   143 85 NO
SOF 33X149 33 45 270 149 40 NO
SOF 33X200 33 35 290 200 65 NO
SOF 33.5X180 33,5 33,5 250 180 115 NO
EL 0013 34 35 140 100 33 YES
SOF 34X122 34 34 200 122 50 NO
SOF 35X164 35 35 220 164 70 NO
SOF 35X140 35 35 230 140 45 NO
SOF 35X186 35 43 260 186 85 NO
SOF 35X230 35 35 354 230 84 NO
SOF 36X92 36 49   92   NO
SOF 36X81 36 52 120 81 30 NO
SOF 36X190 36 41 195 190 85 NO
SOF 36X180 36 41 200 180 80 NO
SOF 36X193 36 36 223 193 80 NO
SOF 36X184 36 40 250 184 90 NO
SOF 37X78 37 56 145 78 35 NO
SOF 37X125 37 41 215 125 65 NO
SOF MECRI 38 40   95 65 YES
SOF 38X55 38 40   55   NO
SOF 38X62 38 38 83 62 30 NO
SOF 38X150 38 68 235 150 37 NO
SOF 39X68 39 55 70 68 50 NO
SOF 39X137 39 52 160 137 70 NO
SOF 39X155 39 39 220 155 85 NO
SOF 39X200 39 39 320 200 95 NO
SOF 40X180X60 39 39 240 170 60 NO
PRO SOF 41 40 50 130 110 78 YES
SOF 40X90 40 45 140 90 50 NO
SOF 40X120 40 48 200 120 50 NO
SOF 40X135 40 73 240 135 60 NO
SOF 40X92 40 40 210 92 42 NO
SOF 40X210 40 40 300 210 70 NO
SOF 40X230 40 55 450 230 95 NO
SOF 40-52X300 40 52 370 300 100 NO
SOF 41X162 41 41   162   NO
SOF 41X118 41 41   118   NO
SOF 42X91 42 61 145 91 50 NO
SOF 42X90 42 55 150 90 25 NO
SOF LAV P 43 43 280 220 90 YES
SOF 44X97 44 44 110 97 50 NO
SOF 44X96 44 55 120 96 30 NO
SOF 45X45 45 45   45   NO
SOF 45X65 45 60 80 65 40 NO
SOF 45X97 45 45 101 97 60 NO
SOF 45X145 45 45 170 150 80 NO
SOF 45X126 45 45 190 126 70 NO
SOF 45X180 45 45 250 180 70 NO
SOF 45X210 45 60 290 210 90 NO
SOF 45X220 45 45 290 220 70 NO
SOF 47X120 47 65 150 120 45 NO
SOF 48X102 48 83   102 40 NO
SOF 48X85 48 48 80 70 25 YES
SOF 48X60 48 69 90 60 30 NO
PRO SOF 48 48 61 110 90 50 YES
PRO SOF 375 48 61 110 100 65 NO
SOF 48X280 48 48 450 280 170 NO
SOF 49X102 49 49   102   NO
SOF 49X86 49 75   86 56 NO
SOF 49X320 49 49 520 320 170 NO
SOF 50x130 50 50 140 130 40 NO
SOF 50X170 50 74 210 170 75 NO
SOF 50X150 50 50 240 180 120 NO
SOF 50X210 50 50 280 210 70 NO
SOF 50X140 50 63 295 140 68 NO
SOF 51X210 51 51 280 210 60 NO
SOF 52X78 52 52   78 40 NO
SOF 52X195 52 52 240 195 100 NO
SOF 52X160 52 60 260 160 90 NO
SOF 53X140 53 90 300 140 80 NO
SOF 53.5X235 53.5 90 300 235 110 NO
SOF 54X180 54 54 400 180 95 NO
SOF 55X60 55 60 60 60 30 NO
SOF 55X210 55 55 280 210 70 NO
SOF 55X240 55 70 400 240 120 NO
SOF 56X140 56 64 170 140 75 NO
SOF 58X105 58 58   105   NO
SOF 58X140 58 58   140   NO
SOF 58X138 58 61 180 138 50 NO
SOF 60X120 60 66 125 120 95 NO
SOF 60X132 60 60 170 132 55 NO
SOF 60X210 60 60 310 210 80 NO
SOF 60X300 60 70 450 300 90 NO
SOF 62X150 62 62 200 150 56 NO
SOF 64X125 64 82 160 125 55 NO
SOF 64X95 64 84 160 95 50 NO
SOF 65X210 65 65 310 210 80 NO
SOF 66X88 66 75 140 88 25 NO
SOF 67X56 67 77 70 60 32 YES
SOF 70X80 70 70   80   NO
SOF 70X150 70 70 250 150 75 NO
SOF 70X210 70 70 320 210 85 NO
SOF 70X240 70 70 400 240 120 NO
SOF 70X290 70 70 450 290 80 NO
SOF 71X38 71 71   38 30 NO
SOF 72X120 72 90   120   NO
SOF 72X105 72 72 210 105 40 NO
SOF 73X34 73 73 55 34 30 NO
SOF 73X77 73 73 110 77 35 NO
SOF 75X200 75 100 300 200 100 NO
SOF 75X210 75 75 340 210 75 NO
SOF 76X106 76 76 170 106 30 NO
SOF 80X210 80 80 320 210 100 NO
SOF 80X240 80 80 340 240 110 NO
SOF 80X230 80 80 350 230 60 NO
SOF 81X85 81 81 110 85 32 NO
SOF 85X75 85 85 130 75 37 NO
SOF 85X170 85 85 260 170 87 NO
SOF 85X210 85 85 330 210 85 NO
SOF 85X285 85 85 445 285 70 NO
SOF 89X62 89 105 190 62 26 YES
SOF 90X80 90 90 100 80 30 NO
SOF 90X88 90 90 180 88 50 NO
SOF 90X210 90 90 350 210 80 NO
SOF 91X175 91 91 360 120 50 YES
SOF 92X87 92 118 215 87 45 NO
SOF 95X105 95 95 210 105 55 NO
SOF 95X230 95 95 350 230 90 NO
SOF 100X88 100 173 88 70   NO
SOF 100X90 100 100 120 90 55 NO
SOF 100X95 100 100 190 95 60 NO
SOF 100X107 100 100 220 107 60 NO
SOF 100X210 100 100 330 210 85 NO
SOF 200X103 103 103 290 180 100 YES
SOF 200X110 110 110 280 160 100 NO
SOF 110X225 110 110 360 225 95 NO
SOF 115X70 115 160 120 70 45 NO
SOF 120X100 120 150   100 40 NO
SOF 120X45 120 165 65 45 25 NO
SOF 120X86 120 250   86   NO
SOF 120X170 120 120 250 170 80 NO
SOF 120X235 120 120 400 235 100 NO
SOF 127X185 127 127 240 185 75 NO
SOF 129X95 129 129 200 95 50 NO
SOF 130X100 130 130 150 100 70 NO
SOF 130X235 130 130 400 235 100 NO
SOF 137X310 137 137 500 310 130 NO
SOF 140X102 140 140 160 102 60 NO
SOF 140X95 140 176 170 95 50 NO
SOF 150X120 150 150 145 120 65 NO
SOF 150X140 150 180 260 140 80 NO
SOF 150X150 150 194 160 150 100 YES
SOF 150X300 150 150 530 300 120 NO
SOF 154X180 154 170 300 180 75 NO
SOF 160X70 160 170 90 70 45 NO
SOF 160X330 160 190 330 220 75 NO
SOF 180X350 180 180   350 250 NO
SOF 180X75 180 220 140 75 58 NO
SOF LAV G 183 200   88 40 YES
SOF 210X200 210 210 350 200 65 NO
SOF 260X600 260 280 600 230 100 NO



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