The AirTAC AirTAC SDA50X140S Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 140mm stroke, PT1/4 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA50X140S is a double-acting single-rod compact cylinder engineered to deliver 981.7 N of push force at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, and piston into a highly shortened unit, drastically reducing axial mounting depth where conventional round-body actuators cannot fit. This specific configuration includes a 140 mm stroke, which exceeds the 130 mm maximum standard length for this bore size, making it a made-to-order component.
Equipped with a built-in piston magnet (-S), the body is wrapped with sensor grooves designed to accept AirTAC reed or electronic switches for precise position detection. The hard-anodized 50 mm bore houses a 20 mm piston rod, while end-of-travel deceleration is handled strictly by a fixed NBR bumper rather than an adjustable air cushion.
| Model | AirTAC SDA50X140S Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 140 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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. |
|---|---|
| 50 | Bore size in mm. |
| ×140 | 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).
Drives a routing flap on a packaging conveyor to redirect 40 kg product pallets, utilizing the 140 mm extended reach to clear the belt lane completely.
Raises a lightweight materials handling elevator platform by 140 mm, safely lifting a 50 kg load capacity thanks to the 981.7 N extend force at 0.5 MPa.
Pushes corrugated cardboard flaps into position on a case erector, where the compact riveted body saves valuable axial space within the tight machine frame.
When sizing this actuator, stepping down to the SDA40 yields 628.3 N of push at 0.5 MPa, whereas stepping up to the SDA63 provides 1558.6 N, allowing you to scale your drive force accurately. Based on the 981.7 N output at 0.5 MPa, the safe working load is approximately 589 N (60% capacity), translating to a vertical lift capability of about 50 kg with a 2:1 safety margin.
Because this is a double-acting pneumatic unit, the piston will drift if air pressure is lost or the control valve is centered, as the fixed NBR bumper only decelerates the stroke end and does not function as a mechanical lock. To suspend a load safely without live pressure, an external rod lock or pilot-operated check valve must be integrated. To order, confirm the 50 mm bore, 140 mm non-standard stroke, PT1/4 port, female M10x1.5 rod thread, and the required -S magnet.
Quick checklist
This 50 mm bore double-acting cylinder provides 981.7 N push and 824.7 N pull at 0.5 MPa, and 1374.4 N push at 0.7 MPa. The theoretical maximum push force is 200 kgf at 1.0 MPa. It operates between 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and runs at speeds of 30-500 mm/s.
End stops are managed by a fixed NBR bumper that decelerates the piston near stroke end; it is not an adjustable air cushion. For high energy impacts, add an external shock absorber. Additionally, the cylinder will drift on air loss, so an external rod lock or pilot-operated check valve is required to hold a suspended load.
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