The AirTAC AirTAC SDA40X30SH Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 30mm stroke, PT1/8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA40X30SH is a double-acting single-rod compact cylinder engineered to deliver 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. Its riveted body assembly drastically reduces axial mounting depth compared to round-body alternatives, making it ideal for space-constrained machinery. This specific configuration includes an -S piston magnet for position sensing and an -H fluororubber (FKM) seal variant for enhanced thermal and oil resistance.
The 40 mm bore features a 16 mm piston rod and PT1/8 porting. Instead of an adjustable air cushion, the ends rely on a fixed NBR bumper to decelerate the stroke. Because this is a compact body, avoid side loading the 16 mm rod. For position feedback, the internal magnet works seamlessly with AirTAC reed or electronic switches mounted in the body grooves.
| Model | AirTAC SDA40X30SH Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 mm |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 housings during machining cycles, utilizing the 628.3 N extend force to hold parts rigidly against the table without excessive bulk.
Drives mechanical folders on automated boxing lines where the short 30 mm stroke rapidly tucks flaps before tape application, fitting within tight conveyor frames.
Acts as a pneumatic stop pin on roller conveyors to halt incoming pallets, with the FKM seals surviving elevated ambient temperatures near shrink-wrap tunnels.
When sizing this actuator, stepping down to the SDA32 yields 402.1 N of push at 0.5 MPa, while stepping up to the SDA50 provides 981.7 N. For the SDA40X30SH, a safe working load is approximately 377 N (about 60% of the 0.5 MPa push figure), translating to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin. Confirm your ordering essentials: 40 mm bore, 30 mm stroke, PT1/8 port, male M14x1.5 rod thread (B option), magnet (S), and FKM seals (H). Note that a standard cylinder drifts when air is lost or the valve is centered; the fixed bumper only decelerates near stroke end and does not function as a lock. To hold a load securely without live pressure, integrate an external rod lock or pilot-operated check valve.
Quick checklist
The SDA40X30SH generates 628.3 N push and 527.8 N pull at 0.5 MPa. At 0.7 MPa, push is 879.6 N and pull is 738.9 N. The theoretical maximum push is 128 kgf at 1.0 MPa, which is the absolute maximum operating pressure.
It uses a fixed NBR bumper at each end to decelerate the piston; it is not an adjustable air cushion. For high cycling speeds, you should add an external shock absorber. The included -S magnet allows tracking via AirTAC reed or electronic switches fitted into the body grooves.
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