The AirTAC Airtac SC40 Standard Cylinder SC40X250SFA is a genuine double-acting standard air cylinder with a Ø40mm bore and 250mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X250SFA is a double-acting single-rod cylinder delivering 628 N of push force at 0.5 MPa and up to 1130 N at 0.9 MPa, making it a solid mid-range actuator for general automation. Its 250 mm stroke is well within the 1200 mm maximum standard stroke for the 40 mm bore, and the 16 mm diameter rod provides good column strength for linear pushing tasks.
This model includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, enabling precise end-of-stroke detection without external brackets. The FA front rectangular flange (F-SC40FA) allows rigid panel mounting on the rod side, and the PT1/4 port threads ensure straightforward pneumatic connections. The adjustable air cushion at both ends decelerates the piston smoothly, protecting the end caps during high-cycle operation.
| Model | Airtac SC40 Standard Cylinder SC40X250SFA |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SC series datasheet. Operating pressure 0.15–1.0 MPa, proof pressure 1.5 MPa, temperature −20 to +70 °C. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (approx.) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SC | Standard tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related variants: SCD (double rod), SCJ (adjustable stroke), SCT (multi-position). Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
The 250 mm stroke and 628 N push force reliably actuate part stops and diverter gates on conveyor lines, with the magnetic piston enabling sensor feedback to the PLC.
Delivers up to 1130 N at 0.9 MPa for light pressing or clamping fixtures in assembly cells, where the front flange mount secures the cylinder rigidly to the machine frame.
Ideal for case packing and carton erecting, pushing products into boxes with consistent force. The adjustable cushion prevents impact damage to packaged goods at the stroke end.
Choose the SC40 bore for applications needing around 628 N of force at standard plant pressure; if your load approaches 900 N, stepping up to the SC50 bore (982 N at 0.5 MPa) provides a safer margin. For strokes of 250 mm and above, ensure the rod is guided externally if any side load is present—the 16 mm rod can bend under off-axis forces, which accelerates seal wear and reduces bearing life.
This cylinder is a direct replacement only for another AirTAC SC40X250 tie-rod unit matching the front flange mount, PT ports, and built-in magnet. It is not dimensionally interchangeable with ISO 15552 profile cylinders, as the SC tie-rod design is shorter in overall length.
Quick checklist
At 0.5 MPa the push force is 628 N and pull force is 528 N. At the maximum operating pressure of 0.9 MPa, push force reaches 1130 N. The theoretical maximum at 1.0 MPa is 128 kgf.
No. The AirTAC SC series is a tie-rod cylinder that is physically shorter than an ISO 15552 cylinder, so mounting dimensions and overall length differ. It is a direct fit replacement only for another AirTAC SC40 tie-rod cylinder with the same stroke, front flange mount, and magnet option.
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