The AirTAC AirTAC SDA25X20SH Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 20mm 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 SDA25X20SH is a double-acting single-rod compact cylinder engineered for tight machinery footprints. A riveted assembly keeps the barrel, rear cover, and piston axially short, delivering 245.4 N of push force at 0.5 MPa. This specific configuration includes a 20 mm stroke, a built-in piston magnet for position sensing, and high-temperature fluororubber (FKM) seals.
It features a 10 mm piston rod and an M5x0.8 air port. The bore is hard-anodized for longevity, and the body incorporates grooves for AirTAC reed or electronic switches. End-of-travel deceleration relies on a fixed NBR bumper rather than an adjustable air cushion, meaning operators should externally slow high-energy approaches.
| Model | AirTAC SDA25X20SH Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 20 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. |
| ×20 | 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).
Actuates a low-profile routing head in electronics manufacturing, using the 20 mm stroke to plunge and cut circuit boards accurately.
Drives horizontal sealing jaws on a flow wrapper, where the short riveted body minimizes axial length and the FKM seals withstand heat.
Opens and closes a precision fluid dispenser, utilizing the built-in magnet to trigger an electronic switch for exact dosing volumes.
When sizing this 25 mm bore, stepping down to the SDA20 yields 157.1 N of push at 0.5 MPa, while stepping up to the SDA32 provides 402.1 N. The SDA25X20SH provides a safe working load of roughly 147 N (about 60% of its 245.4 N capacity) and can vertically lift approximately 12.5 kg with a 2:1 safety margin. To finalize your order, confirm the 25 mm bore, 20 mm stroke, M5x0.8 port, female rod-end thread, the S magnet option, and the H FKM seal variant.
Because this is a standard double-acting cylinder, it will not hold a load if air pressure drops or the valve is centered; the piston drifts until the bumper catches it. If your application demands position holding without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa, the push force is 245.4 N and the pull force is 206.2 N. At 0.7 MPa, the push force is 343.6 N and the pull force is 288.6 N. The theoretical maximum push force is 50 kgf at 1.0 MPa.
It uses a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion or a locking brake. The S option includes a piston magnet designed to trigger AirTAC reed or electronic switches along the body grooves.
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