The AirTAC AirTAC SDA25X55S Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 55mm stroke, M5×0.8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA25X55S is a double-acting, single-rod compact cylinder engineered to deliver a push force of 245.4 N at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, piston, and rod into a highly abbreviated unit, drastically reducing axial mounting depth where a conventional round-body actuator simply cannot fit. The hard-anodized bore wall minimizes friction, while the integrated -S piston magnet enables position detection via an AirTAC reed or electronic switch seated in the body grooves.
This specific configuration provides a 55 mm stroke and utilizes an M5x0.8 port paired with a 10 mm piston rod. End-of-travel deceleration relies on a fixed NBR bumper rather than an adjustable air cushion, meaning operators must slow the approach speed or mount an external shock absorber for high-energy loads. The unit operates reliably between 0.15 and 1.0 MPa, yielding a safe working load of roughly 147 N (about 60 percent of the 0.5 MPa push figure) and a vertical lift capacity near 12.5 kg with a 2:1 safety margin.
| Model | AirTAC SDA25X55S Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 55 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M5×0.8 female / M8×1.25 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
| Max standard stroke | Up to 120 mm |
Specifications follow the official AirTAC SDA compact-cylinder datasheet. Confirm against the product label before installation. Port thread: PT (standard). Rod: female thread (blank) / male thread (B).
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 25 | Bore size in mm. |
| ×55 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| B | Male-thread piston rod (omit = female-thread rod). |
Thread: PT standard. Related SDA-family variants: SSA (single-acting push), STA (single-acting pull), SDAD (double rod), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Provides the 245.4 N push force needed to drive a cutting head through assembled printed circuit boards, utilizing the 55 mm stroke to clear the routing spindle during tool changes.
Actuates folding arms on a continuous packaging line to tuck corrugated box flaps, where the short riveted body conserves valuable axial space within tight conveyor side frames.
Serves as an adjustable end-stop for saw feed systems, using the built-in magnet to trigger an AirTAC electronic switch that confirms material positioning before the cutting cycle begins.
When sizing this actuator, evaluate your force requirements bidirectionally: stepping down to the SDA20 reduces the 0.5 MPa push output to 157.1 N, whereas upgrading to the SDA32 increases it substantially to 402.1 N. To finalize your order for this model, confirm the 25 mm bore, 55 mm stroke, M5x0.8 port, female rod-end thread (M5x0.8), and the required -S magnet option. Remember that a standard compact cylinder drifts when air pressure is lost or the directional valve centers; the fixed bumper only slows the piston near stroke end and will not lock the load. If your application demands strict position holding without live pressure, incorporate an external rod lock or a pilot-operated check valve.
Quick checklist
This double-acting cylinder generates a push force of 245.4 N and a pull force of 206.2 N at 0.5 MPa. At 0.7 MPa, the push increases to 343.6 N. The theoretical maximum push is 50 kgf at 1.0 MPa. It operates within a pressure range of 0.15-1.0 MPa and travels at speeds between 30 and 500 mm/s.
Deceleration is managed by a fixed NBR bumper at each end, which is not field-adjustable and differs from an air cushion; for high kinetic energy loads, an external shock absorber is recommended. The -S option includes a piston magnet designed for AirTAC reed or electronic switches, allowing precise end-position detection without adding external sensors.
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