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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