The AirTAC AirTAC SDA25X75S Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 75mm 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 SDA25X75S is a double-acting single-rod compact cylinder engineered to deliver 245.4 N of push force and 206.2 N of pull force 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 would be too long. The bore is hard-anodized and relies on a two-way piston seal for reliable operation.
Because this configuration includes the S option, a built-in piston magnet enables position detection via an AirTAC reed or electronic switch seated in the body grooves. The 75 mm stroke moves a 10 mm piston rod featuring a standard female M5x0.8 rod-end thread. Deceleration at the travel limits is handled strictly by a fixed NBR bumper, which slows the mass near the end caps rather than acting as a lock or field-adjustable air cushion.
| Model | AirTAC SDA25X75S Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 75 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. |
| ×75 | 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).
Deploys 75 mm to push singulated circuit boards out of a routing fixture, using the 245.4 N extend force to clear the cutting area without overhanging the machine frame.
Actuates a short mechanical arm to tuck minor flaps on small packaging lines, where the compact riveted body minimizes interference with adjacent conveyor guides.
Cycles a 10 mm rod to block advancing DIN rail segments at an assembly station, triggering an AirTAC electronic switch to verify the gate is closed before drilling.
When sizing this actuator, evaluate your force requirements against the adjacent bores: stepping down to the SDA20 provides 157.1 N of push at 0.5 MPa, while stepping up to the SDA32 yields 402.1 N at the same pressure. At 0.5 MPa, this 25 mm bore achieves a safe working load of roughly 147 N (about 60 percent of its 245.4 N capacity) and can vertically lift approximately 12.5 kg with a 2:1 safety margin. To confirm your ordering essentials, verify the 25 mm bore, 75 mm stroke, M5x0.8 port, female M5x0.8 rod thread, and the S magnet option.
Keep in mind that a standard double-acting cylinder does not hold its position if air pressure drops or the directional valve centers. The piston will drift, and the fixed NBR bumper only decelerates it near the stroke end without acting as a brake. If your fixture must maintain a load without live pressure, incorporate an external rod lock or a pilot-operated check valve into the pneumatic circuit.
Quick checklist
At 0.5 MPa this 25 mm bore cylinder generates 245.4 N of push and 206.2 N of pull. Raising the pressure to 0.7 MPa yields 343.6 N push and 288.6 N pull. The theoretical maximum push is 50 kgf at the 1.0 MPa operating limit, with a proof pressure of 1.5 MPa and a speed range of 30-500 mm/s.
No, the SDA25X75S uses a fixed NBR bumper at each end to decelerate the piston. It is not an adjustable air cushion. For high kinetic energy or fast cycling, you should slow the approach speed or mount an external shock absorber to prevent premature wear.
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