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High-force linear motion: How to convert from hydraulic cylinders to electric actuators and why.

 

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A Tolomatic White Paper comparison of hydraulic cylinders and electric actuators

By Aaron Dietrich, Director of Marketing Tolomatic, Inc.

Hydraulic cylinders are traditionally the go-to technology for high-force linear motion, for good reasons. They deliver high force at a low cost per unit of force, they are rugged and simple to deploy. However, there’s a new technology to consider. Electric cylinders with high-force capacities are now available, and they are more flexible, precise and reliable than their hydraulic counterparts.

Following is a comparison of the performance and cost of each technology, as well as recommended methods for converting an application from hydraulic to electric actuation.

We will begin with a comparison of key parameters: force capabilities; motion control; system footprint; temperature tolerance; data collection; environmental concerns; and life cycle costs.

Force: Hydraulic cylinders have high operating pressures [124.1 to 206.8 bar (1800 to 3000 psi)]. Because Force = Pressure x Area, even a 76.2mm (3-inch cylinder) at 151.8 bar (2200 psi) can achieve 66.3 kN (15,000 lbf).

Roller screw-powered electric linear actuators can deliver forces of over...

 

Tolomatic, Inc.
3800 County Road 116
Hamel , MN 55340
United States