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Step Bellows

Features

  • Wide range of standard diameters
  • Large diameter range
  • Fits Imperial and Metric tubing
  • Low influence on Weighing process
  • Offset / misalignment
  • Rectangular to round
  • Antistatic version available
  • Seamless
  • Fast delivery of custom design
  • Low tooling cost for special designs

Step Bellows

Seamless Step bellows are for the flexible connection of mixers, feeders or vessels on weighing and loading cells to supply lines, drain pipes or other forms of air transport or powder transport with two different dimensions of tubing. Flexible connectors with two different diameters are more flexible than straight cylindrical sleeves. This makes them ideal for weighing or dosing equipment.

Step bellows and conical reducers are available in several materials, such as; Silicone, Polyurethane and even flexible PVC. Conical- and Step Bellows are now available in many shapes and sizes. These bellows have no seams, which makes them more hygienic. The bellows can be designed as offset if the pipes are not aligned.

Advantages

  • Air-tight
  • Dust-tight
  • No pile up
  • Low adjustment force and extremely flexible
  • Food contact safety
  • Dimensions custom made
  • Hygienic design
  • Two different diameters
  • No convolution in the design
  • No welding, no glue
  • Made in 1 single piece

Materials

The Step Bellow can be produced in various materials. For more information please go to our Materials Comparison Table.

  • Thermoplastic
  • Explosion Safe Poly Urethane with ATEX declaration
  • Materials;
    • Poly Urethane Transparent
    • Mipolan PVC honey Yellow
    • PVC transparent
  • Seamless diameter 60 – 350mm
  • Larger than diameter 350mm welded from several parts
  • Conical shape
  • Flat reducer shape
  • Bellow shapes
  • Offset / misalignment
  • Side branches / side connection
  • Low quantities upward from 1 pcs
  • Many standard tools cost free
  • Low tool costs

Materials comparison table

Silicone white / translucent / black antistatic

  • Production to your design upward from 50pcs
  • Tooling cost are higher
  • Only available as casted product
Parameter Explanation
T OD A Tube Outside Diameters
ID A Inside Diameter
HC A Hose Clamp Width
SES A Straight End Sleeve
CL Length Weighing Bellow
BIHA Length Between Tubes / Flanges
MAX Maximum Available Build in Height
SES B Straight End Sleeve
HC B Hose Clamp Width
OD B Inside Diameter
T OD B Tube Outside Diameter
Diameters Length Straight
End Sleeve ( R )
(mm) (Inch) range
10 0,39 10 – 12 20
13 0,51 13 – 15 20
17 0,67 17 – 19 20
21 0,83 21 – 23 15
21 0,83 21 – 23 20
25 0,98 25 – 27 20
27 1,06 27 – 30 20
27 1,06 27 – 30 25
30 1,18 30 – 32 20
33 1,30 33 – 35 20
33 1,30 33 35 25
38 1,50 38 – 41 20
41 1,61 41 – 45 20
48 1,89 48 – 52 40
60 2,36 60 – 64 15
60 2,36 60 – 64 40
65 2,56 65 – 69 40
73 2,87 73 – 77 40
76 2,99 76 – 80 40
80 3,15 80 – 84 40
85 3,35 85 – 88 40
88 3,46 88 – 92 40
95 3,74 95 – 99 40
99 3,90 99 – 104 40
104 4,09 104 – 108 25
105 4,13 105 – 109 40
109 4,29 109 – 113 40
114 4,49 114 – 120 40
116 4,57 116 – 122 40
120 4,72 120 – 125 40
126 4,96 126 – 131 40
129 5,08 129 – 135 40
139 5,47 139 – 144 40
150 5,91 150 – 156 40
156 6,14 156 – 160 40
162 6,38 162 – 166 40
168 6,61 168 – 175 25
168 6,61 168 – 175 40
180 7,09 180 – 185 40
200 7,87 200 – 206 40
211 8,31 211 – 216 40
219 8,62 219 – 225 40
250 9,84 250 – 256 40
265 10,43 265 – 272 40
273 10,75 273 – 280 40
300 11,81 300 – 306 40
315 12,40 315 – 321 40
319 12,56 319 – 325 40
350 13,78 350 – 356 40
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