The Kyntronics SHA, also known as an Electro-Hydraulic Actuator (EHA), combines the best features of hydraulic power with the precision of servo control (used in ball screw & roller screw electro-mechanical actuators), without the inherent disadvantages of those approaches. The result is an actuation solution with up to 170,000 LBs (755kN) of force and superior functionality at a lower price point.
Design Advantages of the SHA Include:
All-In-One Complete Solution
- Servo Motor, Controller, Software and Actuator
- Factory tuned, setup & tested, ready to install, saves time
Small Footprint – Energy Efficient
- Maximum force density; superior to electro-mechanical and pneumatic actuators
- Saves energy, uses power on demand
Precision Servo Control
- Accurate control of position, force and speed
- Simple integration into machine control systems with built-in IoT functionality
Eliminates the Hydraulic Infrastructure – Cost Effective
- No hoses, no leaks
- Fewer components, less engineering and manufacturing time
Reliable and Durable
- No metal-to-metal wear points unlike roller or ball screw actuators
- Shock load resistant
- Exceptional long life
The Reasons Kyntronics SHA, Electro-Hydraulic Actuator Provides a Better Solution
Kyntronics SHA
- No Infrastructure
- No leaks
- Only consumes power when it operates
- Built-in servo control
vs
Hydraulic Cylinder Actuators
- Expensive Infrastructure
- Prone to leaks
- Energy Inefficient
- Difficult to precisely control
Kyntronics SHA
- Highest force-density
- Small cost increase as force requirements grow
- Highest reliability available
- Minimal maintenance
vs
Ball Screw / Roller Screw Actuators
- Larger space required
- Expensive in high-force applications
- Pre-mature / localized wear
- Require regular lubrication/maintenance
Actuator Reliability Comparison (Ball screw / Roller Screw)
EMA (Electro-Mechanical Actuation)
- At 10,000lbf (44kN) EMA is at 100,000 inches (254,000 cm) of travel
- At 1,000lbf (4.4kN), EMA is at 10,000,000 inches (25,400,000 cm) of travel
Kyntronics SHA (SMART Hydraulic Actuator)
- Exceeds 50,000,000 in (127,000,000 cm) of travel with no Maintenance
- Exceeds 100,000,000 in (254,000,000 cm) of travel with a simple Rod Seal Cartridge change
- No metal to metal contact leads to increased reliability (load independent)
- The SHA Provides 10X – 100X Better Reliability compared with Ball Screw / Roller Screw Actuators
Actuator Cost Comparison
Kyntronics SHA
Kyntronics SHA is significantly more cost effective compared to EMA solutions as the load increases.
Feature Comparison – Actuation Technologies
| Requirement | Hydraulic Cylinder | Ball & Roller Screw | Kyntronics SHA Features and Benefits | |
|---|---|---|---|---|
| High Force Density in a Small Footprint | Hydraulics provides the highest force density which allow for a smaller space envelope | |||
| Variable Speed Servo Technology – Precise control of speed, force and position | Precise servo-controlled functionality of position, force and speed | |||
| Energy Efficiency | Use power-on-demand technology and eliminates metal-to-metal contact points reducing friction compared with EMA technology. | |||
| All-In-One Solution | Combines the motor, pump, manifold, cylinder and drive all into a single system shipped from the factory pre-tuned and ready to install. | |||
| Ability to Sustain “Shock Loading” Conditions | Designed to absorb “shock loads” in contrast with EMA which can incur significant screw and drive train damage. | |||
| Cost Effective / Lower Equipment Cost | Eliminates expensive Hydraulic infrastructure used with hydraulic cylinders. Ball / Roller Screw EMAs are inherently more expensive than SHAs particularly in higher force applications. | |||
| Reliability / Low Maintenance | Hydraulics provide the highest reliability numbers of any technology. There is no metal to metal wear items experienced with EMAs. | |||
| Simple Fieldbus Control Connectivity, IoT Integration | Like EMA actuators, SHA can be integrated into Field-Bus control architecture and can provide IoT data collection interfaces. | |||
| No Back Driving | Locks into place when power is removed unlike EMAs that are capable of being back-drive and require a brake to hold position. | |||
SHA Modular Building Blocks Provide Maximum Flexibility and Shorter Lead-times
Over 500 Million Combinations
