Integrated-motor actuator
Exlar GTX Series integrated-motor actuator
Servo motor and inverted roller screw combined in one compact rod-style body, offered in three frame sizes with AC or DC windings and a choice of drive feedback devices.
Key specifications
| Ingress protection | IP66S (splined rod option does not meet this) |
|---|---|
| Temperature | 0–65 °C |
| Force (max) | 30,784 N |
| Continuous force | 15,392 N |
| Stroke (max) | 450 mm |
| Linear speed (max) | 1,270 mm/s |
| Screw lead | 2.54, 5.08, 10.2 (GTX060) / 12.7 (GTX080, GTX100) |
| Screw type | inverted roller screw |
| Supply | 230/460 Vac windings; 24/48 Vdc windings on GTX060 and GTX080 only |
| Duty | described as suitable for continuous duty; no numeric duty cycle published |
| Sizes | GTX060 (60 mm frame): 2,668 N cont / 5,336 N peak; strokes 80, 150, 300 mm; max 1,270 mm/s AC, 847 mm/s DC, GTX080 (80 mm frame): 8,365 N cont AC (7,101 N DC) / 16,730 N peak AC (14,202 N DC); strokes 100, 150, 300, 450 mm; max 1,270 mm/s AC, 508 mm/s DC, GTX100 (100 mm frame, AC only): 15,392 N cont / 30,784 N peak; strokes 150, 300 mm; max 953 mm/s |
Summarised in our own words from Curtiss-Wright Actuation Group's published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1 · Source 2 · Source 3
Notes on this data
Metric values as printed by Curtiss-Wright alongside imperial (no conversion needed). Peak force taken from product page/overview quick data; the catalog itself says not to exceed 2x continuous force rather than tabulating peak N. Continuous ratings at 25 C ambient. Extended ambient -30 to 65 C listed (consult factory); storage -80 to 85 C. Backlash 0.102 mm (0.004 in); lead error 25 um/300 mm; no repeatability figure published. Product page links a newer catalog revision (2026 GTX Product Catalog.8-26.pdf) than the one read (.5-26).
Specify Motion is not affiliated with Curtiss-Wright Actuation Group. Exlar and GTX Series are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Exlar GTX Series model codes
Published model codes in the GTX Series range, with key figures from the manufacturer's data. Search this page for your part number, or send it to us for availability or an equivalent.
| Model code | Frame (mm) | Peak force, AC (N) | Continuous force, AC (N) | Max stroke (mm) |
|---|---|---|---|---|
| GTX060 | 60 | 5336 | 2668 | 300 |
| GTX080 | 80 | 16730 | 8365 | 450 |
| GTX100 | 100 | 30784 | 15392 | 300 |
Typical applications
Alternatives that meet or exceed these figures
Engineers often come to us with an Exlar part number and leave with an alternative that is easier to source, quicker to deliver or a better fit for the machine. These 3 series from our supply network are the closest match on published figures.
Rod actuator with a built-in servo motor driving a ball or roller screw, in four sizes up to 30.6 kN, offered in white food-grade and black heavy-duty finishes.
| Published maximum | GTX Series | IMA Integrated Motor Actuator |
|---|---|---|
| Force | 30,784 N | 30,600 N |
| Stroke | 450 mm | 457 mm meets or exceeds |
| Speed | 1,270 mm/s | 1,334 mm/s meets or exceeds |
Heavy-duty version of the RSA rod actuator with roller-screw options, matched angular-contact bearings and larger motor mounts, reaching 58 kN on size 64.
| Published maximum | GTX Series | RSA-HT (high thrust) |
|---|---|---|
| Force | 30,784 N | 58,000 N meets or exceeds |
| Stroke | 450 mm | 1,524 mm meets or exceeds |
| Speed | 1,270 mm/s | 3,124 mm/s meets or exceeds |
Steel-belt driven linear module with integral guide rail, intended as a long-stroke, high-speed replacement for pneumatic cylinders.
| Published maximum | GTX Series | LB Belt-Drive Linear Actuator |
|---|---|---|
| Force | 30,784 N | — |
| Stroke | 450 mm | 3,050 mm meets or exceeds |
| Speed | 1,270 mm/s | 2,000 mm/s meets or exceeds |
Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
What an integrated-motor actuator is
An integrated-motor actuator combines the servo motor and the screw in one body, often with the motor rotor driving the screw or nut directly instead of through a coupling or belt. Many use an inverted roller screw inside a hollow rotor for a very compact, stiff design. Some versions also integrate the servo drive and position controller, so the actuator needs only power and a command or fieldbus connection. The result is a shorter, sealed unit with fewer parts to align.
When engineers choose an integrated-motor actuator
Choose an integrated-motor actuator when space is tight, a clean sealed package is wanted, or decentralised control reduces cabinet size and cabling. It suits welding guns, robot cells and hygienic plant. The trade-offs are flexibility and service: the motor cannot be changed independently, thermal limits are shared and repairs may mean replacing the whole unit. A separate motor and actuator lets you change motor size or brand later and is often easier to source as spare parts.
How to specify the Exlar GTX Series
Send these with your enquiry and an engineer can confirm the right GTX Series variant or an equivalent:
- Force, peak and continuous (N)
- Stroke (mm) and speed (mm/s)
- Supply voltage: mains AC or low-voltage DC (V)
- Control interface: analogue, pulse, Modbus or industrial Ethernet
- Feedback and absolute position needs
- Duty cycle and ambient temperature (°C)
- Sealing and cleaning requirements (IP code)
Common mistakes to avoid
- Overlooking heat build-up when motor and screw share one housing
- Assuming any drive will run it, when integrated units may need a matched drive
- Not checking cable routing and connector orientation on the machine
- Forgetting spare strategy when the whole unit is one part
Exlar GTX Series: frequently asked questions
What is the Exlar GTX Series?
Servo motor and inverted roller screw combined in one compact rod-style body, offered in three frame sizes with AC or DC windings and a choice of drive feedback devices. Published series figures include temperature 0 °C, temperature 65 °C, force 30,784 N, continuous force 15,392 N. It is made by Curtiss-Wright Actuation Group; Specify Motion can help source it or propose an equivalent.
Who makes the Exlar GTX Series?
The Exlar GTX Series is made by Exlar (Curtiss-Wright Actuation Group) and is listed here for engineers comparing options. Specify Motion is not affiliated with Curtiss-Wright Actuation Group; brand names are used only to identify the product.
What model codes are in the Exlar GTX Series range?
The GTX Series range includes GTX060, GTX080, GTX100. The table on this page lists each published model code with its key figures. Send us the code you use, or the one you need to replace, and our engineers will confirm availability, lead time or the closest equivalent.
What is the temperature of the Exlar GTX Series?
The published series minimum temperature is 0 °C. Individual models and sizes in the GTX Series range vary, so check the exact variant against your duty cycle, mounting and environment, or ask our engineers to confirm the right size for you.
Is there an alternative to the Exlar GTX Series?
Yes. On published figures, Tolomatic IMA Integrated Motor Actuator and Tolomatic RSA-HT (high thrust) are the closest match from our supply network. An engineer confirms the fit against your application before recommending anything.
What are the advantages of an integrated motor actuator?
Combining motor and screw removes couplings, belts and the alignment that goes with them, so the actuator is shorter, stiffer and easier to seal. Versions with built-in drives also reduce cabinet space and cable runs. The downside is less flexibility for changing motor size and a larger, more expensive spare part.
Can an integrated actuator be controlled from a PLC?
Yes. Versions with built-in drives typically accept analogue, pulse and direction, discrete I/O or industrial Ethernet commands from a PLC. Versions without a drive need a compatible servo drive, often from a matched range. State the controller and network protocol at the outset so the right variant is selected.
Further reading: How to select a linear actuator · Ball screw vs roller screw · Linear actuators
Other integrated-motor actuator series
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