The AirTAC AirTAC SDA40X50SH Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 50mm 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 SDA40X50SH is a double-acting, single-rod compact cylinder engineered for tight machinery footprints. Its riveted assembly reduces axial mounting depth compared to conventional round-body units, while delivering 628.3 N of push force at 0.5 MPa. This specific configuration includes a male M14x1.5 piston rod end and a fluororubber (FKM) seal for enhanced thermal and oil resistance.
The body features integrated magnetic-switch grooves, and because this unit carries the -S option, it contains a built-in piston magnet ready for AirTAC reed or electronic switches. End-stopping relies on a fixed NBR bumper rather than an adjustable cushion, meaning operators should slow the approach or add external shock absorbers for high-energy cycles.
| Model | AirTAC SDA40X50SH Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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. |
| ×50 | 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 engine blocks during machining, utilizing the 628.3 N extend force to lock parts firmly against locators without over-stressing the casting.
Drives mechanical arms to tuck corrugated box flaps prior to sealing, where the 50 mm stroke and compact depth fit neatly within narrow side frames.
Pushes layered product rows off a staging bed onto a wooden pallet, relying on the 16 mm rod and FKM seals to withstand dusty warehouse environments.
This 40 mm bore generates 628.3 N push at 0.5 MPa, sitting between the SDA32 at 402.1 N and the SDA50 at 981.7 N. A safe working load is approximately 377 N (about 60 percent of the 0.5 MPa figure), translating to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin. If your application requires position holding on air loss, note that the piston will drift; you must integrate an external rod lock or pilot-operated check valve.
When ordering, confirm the 40 mm bore, 50 mm stroke, PT1/8 port, male M14x1.5 rod thread, the -S magnet for sensing, and the -H FKM seal option.
Quick checklist
At 0.5 MPa, the push force is 628.3 N and the pull force is 527.8 N. 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. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa.
No, a standard compact cylinder does not lock position upon air loss or valve centering; the piston will drift. The fixed NBR bumper only decelerates the stroke near the end and acts as neither a lock nor a brake. For suspended loads, install an external rod lock or pilot-operated check valve.
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