The AirTAC AirTAC SDA25X40H Compact Cylinder | 25mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø25mm bore and 40mm 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 SDA25X40H is a double-acting, single-rod compact cylinder engineered with a 25 mm bore and 40 mm stroke. It generates 245.4 N of push force and 206.2 N of pull force at 0.5 MPa. The riveted body design significantly reduces axial mounting depth compared to round-body alternatives, making it highly effective for machinery where space is strictly limited. This specific H-suffix configuration utilizes fluororubber (FKM) seals for enhanced thermal and oil resistance.
The unit features a hard-anodized bore and a 10 mm piston rod with an M5x0.8 female rod-end thread. End-stop deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning external shock absorbers should be added for high-energy cycles. Because this SKU lacks the -S magnet option, it cannot directly host AirTAC reed or electronic switches.
| Model | AirTAC SDA25X40H Compact Cylinder | 25mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 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. |
| ×40 | 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 required to clamp circuit boards securely during high-speed routing operations, where the FKM seals resist thermal degradation from cutting friction.
Actuates the pressing head to seal small cartons, utilizing the short 40 mm stroke and compact riveted body to fit within tight packaging machine frames.
Drives a sorting flap on a materials handling line, moving the 10 mm rod rapidly at speeds up to 500 mm/s to redirect parcels without occupying excessive axial footprint.
When sizing this actuator, evaluate your force requirements carefully: 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. Based on the 245.4 N output at 0.5 MPa, the safe working load is approximately 147 N (about 60 percent of capacity), translating to a vertical lift capability of roughly 12.5 kg with a 2:1 safety margin.
This model operates on an M5x0.8 port and uses a female rod thread. Keep in mind that a standard compact cylinder drifts when air pressure is lost or the valve is centered, as the fixed bumper only decelerates the stroke end and does not function as a locking brake. If your application demands strict position holding without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 25 mm bore cylinder provides 245.4 N push and 206.2 N pull at 0.5 MPa, and 343.6 N push at 0.7 MPa. The theoretical maximum push force is 50 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa, with a speed range of 30-500 mm/s.
No, this specific SKU does not include the -S magnet option, so it cannot host AirTAC reed or electronic switches. You would need the SDA25X40HS variant to utilize the built-in sensor grooves. Additionally, end-stops rely on a fixed NBR bumper, not an adjustable cushion.
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