The Kyntronics Advantage
Historically there were Two Actuation Options: Electro-Mechanical Actuators (EMA) and Traditional Hydraulics.
But Now There is a Better Option
The Kyntronics SMART Electro-Hydraulic Actuator SHA, combines the Benefits of Both Electro-Mechanical Actuators (EMA) and Traditional Hydraulics while eliminating their shortcomings. Resulting in an actuation solution with superior functionality at a lower price point.
See Why the Kyntronics SHA Electro-Hydraulic Actuator is the Superior Solution over traditional hydraulics and electro-mechanical actuator solutions.
- SHA Product Design Elements
- Designed for Maximum Reliability and Minimal Maintenance
- Actuator Reliability Comparison: SHA vs. Ball Screw / Roller Screw Actuator
- Annual Operating Cost Comparison Kyntronics SMART Electro-Hydraulic Actuators (SHA) vs Traditional Hydraulic system (HPU)
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SHA Product Design Elements
Designed For Maximum Reliability and Minimal Maintenance
Design Features Include:
- No metal-to-metal wear points
- Rod seal tested to over 50 million inches of travel without failure (load independent)
- Closed system eliminates contamination, moisture and air infiltration
- Oversize wear rings and bearings provide extra support during rod-extension
- Servo control eliminates pressure spikes
- Relief valves eliminate over pressure
- Temperature monitoring eliminates over-temperature conditions
- Minimal fluid; for example: estimated volume of fluid is 30 fluid ounces for a 2.0” bore X 3.0” stroke with a 1.0” rod diameter
Actuator Reliability Comparison: SHA vs. Ball Screw / Roller Screw Actuator
- EMA Life is load dependent. Improving EMA life requires larger and more expensive size screws
- EMA Metal-to-Metal Wear further decreases reliability and requires regular lubrication
- EMAs are highly susceptible to damage from shock loads and side-loading
- SHA is rated at 50,000,000 inches of travel (before a simple rod seal change) regardless of load.
Annual Operating Cost Comparison
Kyntronics SMART Electro-Hydraulic Actuators (SHA) vs Traditional Hydraulic
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| Operating Cost Component | SHA | HPU | Assumptions / Cost Basis (April 2022) |
|---|---|---|---|
Environmental |
200 Gallon HPU Tank Hydraulic Fluid Index (HFI) = 4.1 SHA is sealed - no fluid replacement or disposal is required |
||
| Oil Replenishment Used Oil Disposal |
$0 $0 |
$33,600 $16,000 |
$42/gal X 800 gallons (4:1 HFI) $20/gal X 800 gallons (4:1 HFI) |
Energy |
SHA Uses Power on Demand 30 HP Hydraulic Power Unit that Runs Continuously SHA is 70% efficient (based on Kyntronics testing) HPU 22% is efficient (based on IFPE paper) |
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| Energy Usage | $1,642 | $16,429 | Using $0.17 per KWh (rates vary from - $0.08 to $0.19 KWh) |
Floor Space Utilization / Maintenance Time |
SHA is All-In-One, no floor space required HPU requires space of 10'x10' = 100 Sq-Ft @ $20 per sq-ft |
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| Floor Space Maintenance Time |
$0 $1,750 |
$2,000 $5,250 |
SHA @ 1 hr/week @ Labor $35/hr HPU @ 3 hrs/week @ Labor $35/hr |
Human Factor |
HPU oil leaks create hazardous conditions and safety risk SHA is totally sealed, no oil leak risk |
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| Time off / Medical / Legal | $0 | $2,000 | Lost days + Medical costs + Legal costs |
Machine Downtime / Product Scrap |
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| 80% of unplanned machine downtime is caused by contaminated lubricants Product Spoilage |
$0 $0 |
$10,000 $10,000 |
SHA is totally sealed, no oil leak risk, minimal downtime risk. $10,000 $4k-$6k average downtime costs per incident. Assuming two downtime events. 1% scrap from product contamination due to leaky connections |
Annual Operating Costs |
$3,392 |
$95,279 |
An $91,887 Annual Savings Opportunity! |
References:
The basis for several of the assumptions used in the annual operating cost table originate from Fluid Power Industry published statistics and sources noted below:
