The AirTAC AirTAC SDA40X50H 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 SDA40X50H is a double-acting, single-rod compact cylinder engineered with a 40 mm bore and 50 mm stroke. It generates 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. This unit features an FKM (fluororubber) seal variant, providing enhanced resistance to higher temperatures and oily environments compared to standard NBR seals.
Its riveted body assembly minimizes axial mounting depth, saving valuable machine footprint where a conventional round-body cylinder would not fit. The bore is hard-anodized for longevity, while end-stops rely on a fixed NBR bumper that decelerates the piston near stroke end rather than an adjustable air cushion. This specific SKU lacks a piston magnet and therefore cannot support magnetic sensing.
| Model | AirTAC SDA40X50H 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).
Actuates the film carriage clamp on stretch wrap machines, where the compact 50 mm stroke and FKM seals withstand warm ambient packaging environments.
Pushes diverter gates on high-speed beverage lines, utilizing the 628.3 N extend force to positively redirect filled glass containers.
Drives secondary ejection arms in plastic molding cells, saving axial depth while handling the 32 kg vertical lift requirement.
When sizing this actuator, evaluate your force requirements against neighbouring bores. Stepping down, the SDA32 provides 402.1 N of push at 0.5 MPa; stepping up, the SDA50 yields 981.7 N at the same pressure. For the SDA40X50H, the computed safe working load is approximately 377 N (about 60% of the 628.3 N capacity), translating to a vertical lift capability of roughly 32 kg with a 2:1 safety margin.
This model utilizes a PT1/8 port and a 16 mm piston rod with a female M8x1.25 thread. Because a plain compact cylinder does not hold its position if air pressure is lost or the valve is centered—the piston will drift and the bumper only decelerates near the stroke end—an external rod lock or pilot-operated check valve is required for secure load holding. To order, confirm the 40 mm bore, 50 mm stroke, FKM seal option, and that no magnet is needed.
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 force 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, this specific SKU does not have a piston magnet and cannot take a magnetic switch. You would need to specify the -S option to add a magnet for AirTAC reed or electronic switches. Additionally, this unit uses a fixed NBR bumper for end-stop deceleration, not an adjustable air cushion.
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