Sewn bellows

Product catalog summary

Overview
This document provides technical specifications and guidelines for sewn and thermowelded bellows, which offer excellent protection for mechanical components such as shafts, worm screws, and ball recirculation screws. The bellows are constructed from rings of specific materials sewn or thermowelded together, depending on the application requirements.

Types of Bellows

Sewn Bellows: Made with nylon or Kevlar thread, available in fold heights of 15 mm, 20 mm, and 25 mm.
Thermowelded Bellows: Suitable for environments with large quantities of liquid or pressurized conditions, ensuring waterproofing.

Materials and Construction
The document references a variety of materials used in the construction of bellows, detailed on page 16. These materials include polyester, glass fiber, Kevlar, and others, each with specific coatings and thicknesses to provide resistance to oil, abrasion, and mechanical stress. Temperature resistance ranges from -40°C to +450°C, depending on the material.

Fixing and Assembly

Fixing options include stainless steel or PVC flanges with thicknesses of 2 or 3 mm, and collars.
Bellows can be mounted horizontally or vertically.

Technical Specifications
The document provides a technical key for understanding various dimensions and parameters related to bellows, such as collar diameter, external diameter, fold height, and more. It also includes formulas for calculating the closed pack and the number of folds in the bellow.

Material Properties
A table lists different materials used for bellows, detailing their fabric insert, coating, thickness, and resistance properties. Each material is rated for oil resistance, abrasion resistance, mechanical resistance, and temperature limits.

Catalog excerpts

SOFFIETTO CUCITO SEWN BELLOWS

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SOFFIETTO ESECUZIONE CIRCOLARE CUCITA O SALDATA bellows sewn execution or thermowelded Esecuzione cucita Sewn execution Eseguita con filo di nylon o kevlar. Altezza piega: 15 mm, 20 mm, 25 mm... It is done with nylon or Kevlar thread. Fold height: 15 mm, 20 mm, 25 mm... Esecuzione saldata Thermowelded execution In presenza di elevate quantita di liquido o in ambienti pressurizzati, garantiscono la tenuta stagna. In the presence of large quantities of liquid or in pressurized environments, they are waterproofed. MATERIALI A PAGINA 16 MATERIALS ON PAGE 16 Soffietto esecuzione circolare cucita bellows...

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POSSIBILITÀ DI MONTAGGIO E FORME ASSEMBLY POSSIBILITIES AND FORMS Montaggio orizzontale Horizontal assembly Montaggio verticale Vertical assembly Df Pattini di scorrimento in PVC PVC sliding bushing Legenda tecnica Tecnical key Dc = Diametro collare De = Diametro esterno soffietto Lp = Larghezza pattino di guida External diameter of bellow bushing width Df = Diametro foratura telaio di testa Collar diameter Diameter of head frame holes Dp = Diametro pattino di guida Bushing diameter maximum closure of bellow Sp = Spessore piega soffietto fold thickness of bellow = Numero e diametro fori telaio...

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MATERIALI SOFFIETTI BELLOWS MATERIALS SOFFIETTO CUCITO SEWN BELLOWS

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Inserto tela fabric insert Spalmatura coating thickness refrigeranti [mm] oil resistance Resistenza abrasione abrasion resistance Resistenza meccanica taglio mechanic resistance T° Contatto istantaneo T° instant contact

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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