Innovation in Motion

Comparing Types of Actuator Technologies - Servo Electro-Hydraulic (SHA) vs. Electro-Mechanical (EMA) vs. Hydraulic (HPU with Cylinder)

Servo Electro-Hydraulic (SHA) vs.Electro-Mechanical (EMA) vs.Hydraulic (HPU with Cylinder)

 

Reliability / Maintenance

Comparing Reliability and Maintenance for Different Types of Actuator Technologies (SHA vs. EMA vs. HPU)
  • EMAs are damaged by shock loads and wear from metal-to-metal contact. Must be oversized to extend life.
  • EMAs require frequent lubrication to extend service life.
  • SHA requires no PM other than a rod seal change (after years of use).
  • Hydraulics require regular replacement of oil, filters, hoses and other components.

Space / Ergonomics / Environment

Comparing Space, Ergonomics and Environment for Different Types of Actuator Technologies (SHA vs. EMA vs. HPU)
  • SHA has Force density of a hydraulic cylinder without the HPU. SHA contains minimal fluid.
  • EMA Force-density is lower than a Hydraulic Cylinder.
  • Hydraulics frequently leak, are dirty and create noisy and unsafe conditions.

Economics / Cost of Ownership

Comparing Economics and Cost of Ownership for Different Types of Actuator Technologies (SHA vs. EMA vs. HPU)
  • Power-on-Demand saves energy.
  • Metal-to-Metal Friction reduces efficiency.
  • Hydraulics run continuously, are very inefficient, and require regular fluid changes. • SHA is all-in-one while Hydraulics have many components.

Precision Control

Comparing Precision Control for Different Types of Actuator Technologies (SHA vs. EMA vs. HPU)
  • EMAs require expensive load cells for force measurement.

Data Collection

Comparing Data Collection for Different Types of Actuator Technologies (SHA vs. EMA vs. HPU)
  • Hydraulics require expensive instrumentation for IoT.