The AirTAC AirTAC SDA25X45H 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 SDA25X45H is a double-acting single-rod compact cylinder engineered for tight machinery footprints. Its riveted assembly merges the barrel, rear cover, piston, and rod to drastically reduce overall length compared to round-body units. Delivering 245.4 N of push force at 0.5 MPa, this 25 mm bore model handles short-stroke actuation with a 45 mm travel distance. The -H designation indicates a fluororubber (FKM) seal, providing enhanced resistance to higher temperatures and oil exposure.
This specific SKU omits a piston magnet, so position sensing is not supported out of the box. End-of-stroke deceleration relies on a fixed NBR bumper rather than an adjustable air cushion, meaning operators should moderate approach speeds or utilize external shock absorbers for heavy loads. The 10 mm piston rod features an M5x0.8 female thread, and the body accepts standard AirTAC compact-cylinder mounting accessories.
| Model | AirTAC SDA25X45H 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).
Secures aluminum workpieces in CNC machining centers, utilizing the 45 mm stroke to position jaws rapidly while the FKM seal withstands cutting fluid spray.
Drives mechanical arms to fold corrugated box flaps on automated packaging lines, where the short riveted body minimizes interference in dense conveyor setups.
Actuates routing gates for parcel sortation, providing reliable 245.4 N push force to deflect packages without consuming excessive axial mounting depth.
Selecting this 25 mm bore involves balancing force and spatial limits. If your application requires less thrust, stepping down to the SDA20 yields 157.1 N of push at 0.5 MPa, while upgrading to the SDA32 provides 402.1 N for heavier payloads. Based on the 245.4 N output at 0.5 MPa, this model offers a safe working load of roughly 147 N (about 60% capacity) and can vertically lift approximately 12.5 kg with a 2:1 safety margin.
When ordering, verify the 45 mm stroke, M5x0.8 port, female rod thread, and FKM seal configuration. Crucially, a standard compact cylinder cannot hold a load if air pressure drops or the valve centers; the piston will drift, and the fixed bumper only decelerates near the stroke end. For suspended or vertical loads, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 25 mm bore 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. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa, and the operational speed spans 30-500 mm/s.
No, the piston drifts if air is lost or the valve centers, as the fixed NBR bumper only decelerates the stroke end and acts as neither a lock nor a brake. An external rod lock or pilot-operated check valve is required for position holding. Additionally, the bumper is not an adjustable air cushion, so high-speed approaches require external shock absorption.
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