The AirTAC AirTAC SDA50X65S Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 65mm 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 SDA50X65S is a double-acting single-rod compact cylinder engineered to deliver 981.7 N of push force and 824.7 N of pull force at 0.5 MPa. Its riveted assembly minimizes axial mounting depth, providing a distinct footprint advantage in machinery where a conventional round-body unit would be too long. The 50 mm bore features a hard-anodized inner wall and a 20 mm piston rod.
This unit includes the S option, meaning it has a built-in piston magnet for position sensing. You can mount AirTAC reed or electronic switches directly into the grooves around the body. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, which effectively absorbs impact but requires an external shock absorber if operating at the top end of the 30-500 mm/s speed range.
| Model | AirTAC SDA50X65S Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 65 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. |
| ×65 | 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 a routing flap on a high-speed logistics conveyor, utilizing the 65 mm stroke to redirect parcels weighing up to 50 kg into secondary sorting lanes.
Drives the mechanical folding arms on a continuous motion case erector, where the short riveted body saves axial space inside the compact machine frame.
Raises lowerator platforms in an assembly line, taking advantage of the 981.7 N push force to elevate lightweight tooling fixtures between processing tiers.
Choosing this 50 mm bore provides a safe working load of roughly 589 N (about 60% of the 981.7 N push at 0.5 MPa), translating to a vertical lift capacity of approximately 50 kg with a 2:1 safety margin. If you need less force, the SDA40 steps down to 628.3 N at 0.5 MPa; if your application demands more power, the SDA63 steps up to 1558.6 N at 0.5 MPa. When ordering, confirm the 65 mm stroke, PT1/4 port, female M10x1.5 rod-end thread, and the required S magnet code.
Keep in mind that a standard double-acting cylinder like this does not hold its position when air pressure is lost or the directional valve is centered. The piston will drift, and the fixed bumper only decelerates the stroke near the end points without acting as a lock. For applications requiring suspended load security, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa, the push force is 981.7 N and the pull force is 824.7 N. At 0.7 MPa, the push force is 1374.4 N and the pull force is 1154.5 N. The theoretical maximum push force is 200 kgf at the maximum operating pressure of 1.0 MPa.
No, the piston will drift if air is lost or the valve is centered. The fixed NBR bumper only decelerates the piston near the stroke end and does not function as a brake. To maintain a vertical load safely, you must add an external rod lock or a pilot-operated check valve.
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