Integrated-motor actuator
Exlar GTW Series (weld gun actuator)
Integrated servo roller-screw actuator packaged for resistance spot-weld guns on robot cells, with compatibility listed for major robot and 7th-axis controllers.
Key specifications
| Force (max) | 30,784 N |
|---|---|
| Continuous force | 15,392 N |
| Stroke (max) | 300 mm |
| Linear speed (max) | 1,270 mm/s |
| Screw lead | 2.54, 5.08, 12.7 |
| Screw type | inverted roller screw |
| Supply | up to 460 Vac (GTW080 table also lists 115-460 Vac and 24-48 Vdc windings; GTW100 AC only) |
| Sizes | GTW080 (80 mm): up to 8,365 N cont / 16,730 N peak (2.54 mm lead); strokes 150, 300 mm; up to 1,270 mm/s (12.7 mm lead), GTW100 (100 mm): up to 15,392 N cont / 30,784 N peak (2.54 mm lead); strokes 150, 300 mm; up to 953 mm/s (12.7 mm lead) |
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
Notes on this data
Metric as printed. Manufacturer claims >30 million welds under typical profiles. Page quick-data headline for GTW080 (9,480 N peak / 4,740 N cont) and GTW100 (24,196 / 12,098 N) reflects the 5.08 mm lead; the table maxima above are for the 2.54 mm lead. Page lists GTW100-300-01 with 150 mm stroke, conflicting with its model code. IP rating and temperature range not published numerically. Listed robot compatibility: KUKA KRC4/KRC5, ABB, Comau, Fanuc; Bosch Rexroth and Festo 7th-axis drives.
Specify Motion is not affiliated with Curtiss-Wright Actuation Group. Exlar and GTW Series (weld gun actuator) are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
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 | GTW Series (weld gun actuator) | IMA Integrated Motor Actuator |
|---|---|---|
| Force | 30,784 N | 30,600 N |
| Stroke | 300 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 | GTW Series (weld gun actuator) | RSA-HT (high thrust) |
|---|---|---|
| Force | 30,784 N | 58,000 N meets or exceeds |
| Stroke | 300 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 | GTW Series (weld gun actuator) | LB Belt-Drive Linear Actuator |
|---|---|---|
| Force | 30,784 N | — |
| Stroke | 300 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.
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