Carlsbad, CA. ETI Systems is drawing attention to a reality that controls and design engineers know well, but project schedules often obscure: a small set of Linear Actuator selection decisions determines how an entire piece of equipment performs for years, and most of those decisions are difficult and costly to reverse once the machine is built. Drive mechanism, duty cycle, load holding, mounting, and position feedback are all chosen early, yet they govern accuracy, reliability, and maintenance cost across the full service life. Settling them correctly at selection is far cheaper than correcting them in the field after the equipment ships.
ETI Systems, a control-product manufacturer since 1958, supports actuator-driven equipment through the precision position feedback that keeps these systems accurate over time. While the actuator moves the load, the feedback component reports where that load actually sits, and the quality of that signal shapes how well the system holds its performance as operating hours accumulate. ETI manufactures the linear-motion and rotary potentiometers that supply this feedback, helping engineers preserve the value of strong actuator selection decisions throughout the life of the equipment.
Why Linear Actuator Selection Is a Long-Horizon Decision
Unlike a setting that can be tuned after commissioning, the core actuator choices are embedded in the mechanical design. The screw type, the motor size, the mounting interface, and the feedback method are fixed once the equipment is assembled, and changing any of them later usually means redesigning the surrounding structure. A choice that looked adequate against the initial specification can constrain the machine for a decade, capping its load, speed, or accuracy long after the original requirement has changed. Experienced teams, therefore, weigh these decisions against the full duty the equipment will see over its life, treating actuator selection as a commitment with a long payback rather than a line item to close quickly.
The Drive Mechanism Sets Load Capacity and Service Life
The drive mechanism inside a Linear Actuator is the single decision with the longest reach. Roller screws carry the highest loads with the longest life under continuous duty, ball screws balance capacity and cost across a wide range of work, and lead screws offer self-locking holding at lower duty. Choosing a mechanism below the application's true load and cycle demand guarantees early wear, rising maintenance, and eventual failure, while the correct choice runs for years with minimal intervention. Because the mechanism cannot be swapped without rebuilding the actuator, it warrants the most scrutiny of any selection decision, and it should be sized to the genuine duty the equipment will face rather than the minimum needed to move the load on day one.
Duty Cycle, Load Holding, and Mounting Decisions That Compound Over Time
Three further choices quietly shape long-term reliability, and each is inexpensive at selection but expensive to correct after the equipment is in service. Sizing the motor for the sustained duty cycle, not just the peak instant of force, prevents the thermal stress that shortens motor life across thousands of cycles. Defining how the actuator holds its load, through a self-locking screw or a power-off brake, sets both safety behavior and wear for the life of the machine. Mounting the actuator so it carries force along its axis, free of side loading from misalignment, protects the screw and bearings from the uneven wear that ends many units prematurely. Together, these decisions determine whether the actuator fades into the machine and stays reliable or becomes a recurring service item.
Position Feedback Determines Accuracy Across the Actuator's Life
How a Linear Actuator reports its position decides whether the equipment stays accurate or drifts as it ages. Open-loop systems move on command but cannot confirm position, so wear accumulates unseen until the machine misses its target. Closed-loop systems read continuous position feedback, letting the controller hold repeatable stops, approach the end of travel under control, and detect a developing fault before it stops the line. The feedback element, therefore, carries much of the responsibility for long-term accuracy, and a stable, linear sensor preserves the positioning performance that the actuator was selected to deliver. Specifying reliable feedback at the selection stage is what keeps accuracy from eroding across the years the equipment operates, and it gives maintenance a measurable reference for catching decline early.
A Linear Actuator Selection Checklist for Lasting Performance
ETI Systems recommends weighing these long-horizon decisions deliberately during selection:
- Match the drive mechanism: Size the screw type to the true load and duty the equipment will see, with a margin.
- Size for sustained duty: Account for the full duty cycle and thermal load, not only the peak force.
- Define load holding: Choose a self-locking or a brake to suit the safety and wear requirements.
- Protect against side loads: Mount and couple the actuator to keep force along its axis.
- Specify position feedback: Select a stable, well-scaled sensor for the accuracy the application needs over time.
- Set a commissioning baseline: Record feedback at key positions to track performance through service.
ETI Systems Support for Linear Actuator Feedback and Control
ETI Systems helps engineers protect their Linear Actuator selection decisions with precision feedback built for the long term. The company's linear-motion and rotary potentiometers deliver smooth, repeatable position signals across the full travel, with conductive plastic, wirewound, and hybrid elements and life ratings suited to demanding duty. Its engineering team matches resistance value, linearity, stroke, and mounting to the actuator and control system, and develops custom feedback components when a standard part cannot fit the design. By treating feedback as a controllable part of system performance, ETI helps equipment hold the accuracy and reliability that sound actuator selection set out to achieve.
Contact
- Business Name: ETI Systems
- Business Address: 1954 Kellogg Avenue, Carlsbad, CA 92008
- Email: [email protected]
- Tel: (760) 929-0749
