The AirTAC AirTAC SDA40X80S Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 80mm 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 SDA40X80S is a double-acting, single-rod compact cylinder engineered to deliver 628.3 N of push force at 0.5 MPa. Its riveted body assembly merges the barrel, rear cover, piston, and rod into an axially short unit, saving valuable mounting depth where a traditional round-body actuator would not fit. The 40 mm bore features a hard-anodized inner wall and a 16 mm piston rod.
This specific configuration includes the S option, meaning it has a built-in piston magnet ready for AirTAC reed or electronic switches along the body grooves. End-of-travel deceleration relies on a fixed NBR bumper rather than an adjustable air cushion. Operating speeds span 30-500 mm/s, and the PT1/8 ports supply air efficiently to the two-way piston seal.
| Model | AirTAC SDA40X80S Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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. |
| ×80 | 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 628.3 N push stroke needed to fold heavy corrugated cardboard flaps on automated packaging lines at cycle rates within the 30-500 mm/s range.
Actuates a routing gate on a conveyor system, utilizing the 16 mm rod and compact riveted body to fit within tight side-frame clearances.
Pushes finished stamped parts out of a shallow die, relying on the fixed NBR bumper to absorb the end-stop impact without requiring external cushions.
When sizing this model, 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 this 40 mm bore, a safe working load is approximately 377 N (about 60% of the 0.5 MPa figure), translating to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin. Keep in mind a standard SDA does not hold its position if air pressure drops or the valve is centered; the piston will drift. For suspended loads, integrate an external rod lock or a pilot-operated check valve. To order, confirm the 40 mm bore, 80 mm stroke, PT1/8 port, female M8x1.25 rod thread, and the required S magnet 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 force is 128 kgf at 1.0 MPa, which is the maximum operating pressure.
No, it uses a fixed NBR bumper at each end to decelerate the stroke, which is not a field-adjustable air cushion. Additionally, it does not function as a lock; if air is lost, the piston drifts, so an external rod lock is needed to hold a load.
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