Circular bellows

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

• 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:

SYSTEM 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

Sketch of arrangement for fastening external frames.

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

Fabrics

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