The AirTAC AirTAC SDA25X70 Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 70mm 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 SDA25X70 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 shortened unit, drastically reducing axial mounting depth where a conventional round-body actuator would be too bulky. The bore is hard-anodized and utilizes a two-way piston seal for reliable operation across the 30-500 mm/s speed range.
This specific configuration features a 70 mm stroke, a 10 mm piston rod, and an M5x0.8 air port. End-stop deceleration is handled strictly by a fixed NBR bumper at each end rather than an adjustable air cushion. Because this SKU lacks the -S suffix, it has no piston magnet and cannot support position sensing; adding an -S variant enables the use of reed or electronic switches in the body grooves.
| Model | AirTAC SDA25X70 Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 70 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. |
| ×70 | 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 stroke needed to eject separated circuit boards from a depanelling fixture, where the 70 mm travel and minimal axial length fit neatly alongside routing spindles.
Drives a short mechanical arm to fold minor carton flaps prior to tape sealing, utilizing the compact body to avoid interfering with the conveyor guide rails.
Pushes metal blanks against a fixed stop to square them up before a stamping press, taking advantage of the non-magnetic piston and fixed NBR bumpers for consistent mechanical positioning.
When sizing this model, evaluate your force requirements bidirectionally: 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. The SDA25X70 itself offers 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, 70 mm stroke, M5x0.8 port, female rod-end thread (M5x0.8), and the absence of a sensor magnet.
Keep in mind that a standard double-acting cylinder like this will not hold a load if air pressure drops or the valve is centered—the piston will drift, and the fixed NBR bumper only decelerates the stroke near its end without acting as a mechanical lock. If your application demands strict position holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
Quick checklist
At 0.5 MPa, this 25 mm bore cylinder outputs 245.4 N of push (extend) force and 206.2 N of pull (retract) force. At 0.7 MPa, push increases to 343.6 N and pull to 288.6 N. The theoretical maximum push force is 50 kgf at the 1.0 MPa operating pressure limit.
No adjustable air cushion exists; end-stop energy is absorbed solely by a fixed NBR bumper at each end, so you may need an external shock absorber for high-speed approaches. Additionally, this specific SKU lacks a piston magnet, meaning it cannot support reed or electronic switches unless you switch to the -S variant.
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