The AirTAC Airtac SC40 Standard Cylinder SC40X255 is a genuine double-acting standard air cylinder with a Ø40mm bore and 255mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X255 is a double-acting single-rod pneumatic cylinder with a 40 mm bore and a 255 mm non-standard stroke, built for applications needing a specific extended reach beyond the standard catalog range. At 0.5 MPa air pressure, it provides a push force of 628 N and a pull force of 528 N, driven by a 16 mm diameter piston rod.
This tie-rod cylinder features an adjustable pneumatic cushion (21 mm length) at both ends to decelerate the piston smoothly, reducing end-of-stroke impact. The body length A is 142 mm, giving a total extended length of approximately 397 mm. Ports are PT1/4 with an M12x1.25 rod thread, and the standard TPU seals suit an operating temperature range of -20 to +70 °C.
| Model | Airtac SC40 Standard Cylinder SC40X255 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 255 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. |
| ×255 | 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 255 mm stroke provides an extended reach for diverting parts on wider conveyor lines. The 628 N push force at 0.5 MPa reliably actuates a flipper gate to sort medium-weight packages.
Ideal for a custom welding or assembly jig where a specific 255 mm clamping stroke is required. The adjustable cushion prevents vibration and part misalignment during clamp closure.
Pushes a dispensing shuttle across a 255 mm path to fill multi-cell trays. The double-acting control ensures consistent forward and return motion for accurate fill levels.
For a 40 mm bore, this model sits between the smaller SC32 (402 N push at 0.5 MPa) and the larger SC50 (982 N push at 0.5 MPa). If your load requires more force, stepping up to a 50 mm bore nearly doubles the output. For this 255 mm stroke, ensure the load is guided externally if side forces are present; long unsupported strokes on a 16 mm rod can experience bending under lateral loads.
When replacing an existing cylinder, confirm five key points for a direct match: 40 mm bore, 255 mm stroke, PT1/4 port thread, basic (no bracket) mounting, and the absence of a built-in magnet. This is a non-standard stroke length, so lead time may differ from standard catalog items.
Quick checklist
At the standard operating pressure of 0.5 MPa, the push force is 628 N and the pull force is 528 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 1130 N.
No, the maximum standard stroke for a 40 mm bore SC cylinder is 1200 mm, but 255 mm is not a standard catalog increment. Standard strokes include 250 mm and 300 mm. This 255 mm stroke is a non-standard, made-to-order configuration.
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