Rolling diaphragm

Rolling diaphragm

  • Rolling Diaphragm is a hat shaped reinforced rubber diaphragms. These diaphragms are specially designed to offer longer stroked in a cylinder. Due to longer stroke cycle controlled thrust can be generated which is advantageous in sensitive pneumatic applications. Rolling Diaphragms are generally reinforced with a fabric to offer maximum service life. The type of fabric depends on environment, life cycles and cost factors. Nylon® is  the most commonly used reinforcement fabric.

     

    Rolling diaphragm sectional view

    Rolling diaphragm sectional view

     

    Types of reinforcements for rolling diaphragms

    • Nylon®
    • Kevlar®
    • Polyester
    • Nomex®
    • Cotton ( rarely used )

     

    Advantage of Rolling Diaphragm

    • It is accurate.
    • long stroke length and no spring rate.
    • Rolling diaphragms withstand high pressures.
    • No lubrication required.
    • Super sensitivity.
     
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