The AirTAC AirTAC SDA25X45S Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 45mm 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 SDA25X45S 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 25 mm bore features a hard-anodized inner wall and a two-way piston seal for low-friction operation.
Equipped with a built-in piston magnet (-S option), this model is ready for position sensing using an AirTAC reed or electronic switch housed in the grooves around the body. The 10 mm piston rod utilizes an M5x0.8 female thread end, operating at speeds between 30 and 500 mm/s. End-of-travel deceleration is handled by a fixed NBR bumper, which absorbs impact energy but is not a field-adjustable air cushion.
| Model | AirTAC SDA25X45S Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 45 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. |
| ×45 | 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 cut circuit boards from a routing fixture without stressing the 10 mm rod with heavy side loads.
Cycles at 45 mm to tuck minor flaps on small packaging lines, benefiting from the short riveted body to fit within tight conveyor side frames.
Uses the built-in magnet with an electronic switch to confirm the 45 mm stroke position when pushing microtiter trays into a diagnostic analyzer.
When sizing this actuator, 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. For the SDA25X45S, the safe working load is approximately 147 N (about 60% of the 245.4 N figure at 0.5 MPa), translating to a vertical lift capacity of roughly 12.5 kg with a 2:1 safety margin. Ensure your ordering essentials match the 25 mm bore, 45 mm stroke, M5x0.8 port, female rod thread, and the required magnetic sensor option.
Keep in mind that a standard compact cylinder cannot hold a load if air pressure is lost or the directional valve is centered; the piston will drift, and the fixed NBR bumper only decelerates the stroke end without acting as a mechanical lock. If your application demands position holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This double-acting cylinder generates 245.4 N push and 206.2 N pull at 0.5 MPa, increasing to 343.6 N push and 288.6 N pull at 0.7 MPa. The theoretical maximum push force is 50 kgf at 1.0 MPa. It operates between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and supports a speed range of 30-500 mm/s.
No, the SDA25X45S uses a fixed NBR bumper at each end to absorb impact energy; it is not an adjustable air cushion. For high-speed or high-energy cycles, you should slow the approach speed or mount an external shock absorber. Additionally, this bumper only decelerates the piston near the stroke end and does not function as a brake to hold a load.
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