Rephasing Hydraulic Cylinders

April 13, 2006

Rephasing cylinders offer an innovative and costsaving solution for synchronized linear-actuator applications.

The system includes two or more cylinders plumbed in series, with bore and rod diameters sized such that all rods extend or retract equally when flow routes to the first, or last, cylinder in the series. This hydraulic synchronization eliminates the need for a separate flow divider or mechanical torque tube. There's also no need for external circuitry, devices, or plumbing for synchronization.

Rephasing cylinders combine the functions of flow dividing/combining components with that of actuators, saving space and weight. In addition, accuracy reportedly equals or exceeds that of more-costly methods. Other advantages include lower parasitic power losses, pressure intensification, and the ability to transfer power between actuators. Both tie-rod and welded cylinders can be modified to take advantage of rephasing technology.

Energy Mfg. Co., 204 Plastic Lane, Monticello, IA 52310, (319) 465-3537, energymfg.com

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Comments

rephasing cyl concepts

On March 25th, 2011 art (not verified) says:

could someone knowledable please comment to following; why must the slave cyl in a rephasing system always be 1/4inch smaller,bore dia. Every piece of machinery in my fleet is this way. I would like to standardize my replacement parts supply and i need to understand the dynamics of the master/slave relationship. Any help would be greatly appreciated.

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hydraulic cylinders

On September 16th, 2009 ross edgar (not verified) says:

Does the rephasing setup exist for differential cylinders - I suppose not but I thought I'd ask at it would simplify considerably my design which requires two synchronised cylinders able to resist both push and pull loading.

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