Auotomative Rubber bellow
Rubber bellows form an important component of automobiles, especially the steering
system of cars. Designed for keeping dirt and debris out of the steering rack, bellows
are cylindrical vessels that come in a comprehensive variety of shapes, sizes,
constructions and elastomer coated fabrics or rubbers to fit diverse applications
requirements of vehicles. Being easily compressible and extensible due to different
annular convolutions, they are known for providing excellent cushioning effect and are
therefore used to cover, protect and enhance the service life of a range of precision
machine parts like lead screws, shafts, spindles, guide ways, cylinders, pistons, etc.,
from dust and other foreign particles.
Apart from the automotive industry, rubber bellows also find application in areas like
Motion Coupling, Chemical, Electrical Contacts, HVAC, Petrochemical, among others.
To suit specific industrial application, different types of rubber bellows are available in
the market including Single ended bellows, Double ended bellows, and bellows with
ribs and without ribs.
Materials Used In Rubber Bellows
Depending upon the end use requirements, rubber bellows are manufactured using
various synthetic polymers like:
SBR
Neoprene
HNBR
Ethylene Propylene Diene Monomer (EPM, EPDM), etc.
Application Areas of Rubber Bellows
Both molded and hand-built variety of rubber bellows are designed in different sizes and specifications to
address multiple automotive and general industrial applications. A few industries
where rubber bellows enjoy a huge demand are:
Automotive
Aerospace
Chemical
Marine
Motion Coupling
Petrochemical
Fluid Coupling
HVAC
Electrical Contacts
Semiconductor
High Purity
Factors To Consider While Buying Rubber Bellows
Find below certain features that are to be considered while purchasing rubber bellows:
Material used in designing the bellow (the inside material should be suited to oil,
lubricants and grease, and on the outside it should be susceptible to conditions like
UV and ozone)
Shape of the bellow (rectangular, round, square, tapered, C-type, hexagon, octagon, polygon, to name a few)
Inside diameter of the bellow
Outside diameter of the bellow
The free or the unloaded length of the bellow along the convolutions
The spring rate or the spring force that the bellow applies
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