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Circular bellows

Fuelles circulares

Characteristics

Made from a core of rigid polyamide fabric with layers of PVC on either side.

These systems are applied to protect spindles, shafts and columns and the optical fibre in laser machines.

Parts of the circular bellows

Fuelles circulares

  • Nylon fabric with layers of PVC.
  • Stitching.
  • Silicon coating.
  • PVC slides.
  • Steel hoop for large bellows.
  • Air outlet holes.
  • Support for fastening bellows to machine.
  • Collar for fastening to the machine.

Opening systems

For very heavy vertical protective elements, tecnifuelle has a number of opening systems:

Fuelles circularesSYSTEM 1
Stretching device using staples located on the support frame, on as many folds as required, depending on the size of the bellows.

SYSTEM 2
Scissors-type stretching device, ideal for elements that are not guided by the intermediary frames.

Information on working conditions

Fuelles circularesSketch of arrangement for fastening external frames.

  • (Flat at one end and collar at the other)
  • (Flat at both ends)
  • (Collar at both ends)

Fabrics

Fuelles circulares

FT: Heat-welded bellows
FC: Stitched bellows

      Temperature ºC      
Ref.
material
Type of fabric and coating Thickness
(mm)
Temporary Continuous Operating conditions FT FC
        Min Max      
TPP-23 POLIESTER + PVC 0,23 110 -25 70 DUST GUARD,
ACID MEDIUMS
USABLE USABLE
TPP-35 POLIESTER + PVC 0,35 110 -25 70 DUST GUARD,
ACID MEDIUMS
USABLE USABLE
TPP-60 POLIESTER + PVC 0,6 110 -25 70 DUST GUARD,
ACID MEDIUMS
  USABLE
TPP-100 POLIESTER + PVC 1 110 -25 70 DUST GUARD,
ACID MEDIUMS
  USABLE
TPPU-23 POLIESTER + POLYURETHANE 0,23 220 -25 150 RESISTANT TO OILS IN
EMULSION AND GREASE
USABLE USABLE
TPPU-35 POLIESTER + POLYURETHANE 0,35 220 -25 150 RESISTANT TO OILS IN
EMULSION AND GREASE
USABLE USABLE
TPPU-60 POLIESTER + POLYURETHANE 0,60 220 -25 150 RESISTANT TO OILS IN
EMULSION AND GREASE
  USABLE
TPHY-50 POLIESTER + HYPALON 0,50 250 -15 140 RESISTANT TO MINERAL
OIL, GREASE
  USABLE
TPHY-100 POLIESTER + HYPALON 1 250 -15 140 RESISTANT TO MINERAL
OIL, GREASE
  USABLE
TNPU-35 NOMEX + POLYURETHANE 0,35 400 -30 200 HOT SWARF,
LASER BEAMS, OILS
USABLE USABLE
TARPU-35 ARAMIDE + POLYURETHANE 0,35 400 -20 200 HOT SWARF,
OILS, GREASE
USABLE USABLE
TFVS-35 FIBREGLASS  +
SILICONING + PVC
0,35 400 -40 250 FOR HIGH TEMPERATURES CYLINDERS, CEILINGS... USABLE USABLE
TFCAL-35 CARBON FIBRE + ALUMINIUM 0,35 500 -40 280 FOR HIGH TEMPERATURES   USABLE
TFVV-35 FIBREGLASS  + VITON + POLYURETHANE 0,35 600 -40 280 FOR HIGH TEMPERATURES USABLE USABLE

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