Roller screw actuator
Exlar FTX Series
Heavy-duty motorless planetary roller-screw cylinder in four frame sizes, accepting inline or parallel-belt motor mounting, used as a direct replacement for large hydraulic cylinders.
Key specifications
| Ingress protection | IP65 |
|---|---|
| Force (max) | 177,900 N |
| Stroke (max) | 1,200 mm |
| Linear speed (max) | 1,500 mm/s |
| Screw lead | 5, 10, 20 (FTX095, FTX125) / 6, 12, 30 (FTX160, FTX215) |
| Screw type | planetary roller screw |
| Sizes | FTX095 (95 mm): 22.2 kN max; strokes 150-1200 mm; up to 1,500 mm/s (20 mm lead); 4,500 rpm max input, FTX125 (125 mm): 44.5 kN max; up to 1,166 mm/s; 3,500 rpm, FTX160 (160 mm): 89 kN max; up to 1,000 mm/s; 2,000 rpm, FTX215 (215 mm): 177.9 kN max; up to 875 mm/s; 1,750 rpm |
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 as printed. Manufacturer labels the figure 'max continuous force' in quick data but defines it as the maximum routinely applied force (22/44/89/178 kN in overview, 22.2/44.5/89/177.9 kN in spec tables). Per-frame stroke maxima for FTX125-215 not stated on page; series max 1200 mm. Low-temperature grease option rated -40 to 85 C ambient (lubricant rating, not a general actuator temperature spec, so not entered in specs). No backlash, repeatability or duty figures specific to FTX. 2026 FTX catalog PDF linked but not separately read.
Specify Motion is not affiliated with Curtiss-Wright Actuation Group. Exlar and FTX Series 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.
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 | FTX Series | RSA-HT (high thrust) |
|---|---|---|
| Force | 177,900 N | 58,000 N |
| Stroke | 1,200 mm | 1,524 mm meets or exceeds |
| Speed | 1,500 mm/s | 3,124 mm/s meets or exceeds |
High-force planetary roller-screw (and ball-screw) rod actuator up to 294 kN, positioned as a direct hydraulic cylinder replacement, with oil-cooled and food-grade versions.
| Published maximum | FTX Series | RSX Extreme Force |
|---|---|---|
| Force | 177,900 N | 294,000 N meets or exceeds |
| Stroke | 1,200 mm | 1,500 mm meets or exceeds |
| Speed | 1,500 mm/s | 760 mm/s |
Steel-belt driven linear module with integral guide rail, intended as a long-stroke, high-speed replacement for pneumatic cylinders.
| Published maximum | FTX Series | LB Belt-Drive Linear Actuator |
|---|---|---|
| Force | 177,900 N | — |
| Stroke | 1,200 mm | 3,050 mm meets or exceeds |
| Speed | 1,500 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.
Other roller screw actuator series
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