The AirTAC Airtac SC40 Standard Cylinder SC40X250N 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 AirTAC SC40X250N is a double-acting single-rod pneumatic cylinder delivering 628 N of push force when supplied with 0.5 MPa air pressure. With a 40 mm bore and 250 mm stroke, this model uses NBR (nitrile) seals, making it a cost-effective choice for general industrial environments within the standard -20 to +70 °C temperature range.
This tie-rod cylinder features a 16 mm diameter piston rod with M12x1.25 male threads and PT1/4 ports. The body length A is 142 mm, resulting in an extended length of approximately 392 mm. An adjustable pneumatic cushion at each end decelerates the piston over the final 21 mm of travel, reducing end-of-stroke impact for smoother machine cycles.
| Model | Airtac SC40 Standard Cylinder SC40X250N |
|---|---|
| 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 628 N push force at 0.5 MPa is ideal for actuating product stops and diverter gates on light-to-medium-duty conveyor lines, providing reliable part separation.
Used in jigs and assembly fixtures, the SC40X250N applies consistent clamping pressure for woodworking, light metal fabrication, or plastic joining processes.
With NBR seals offering good resistance to oils and greases, this cylinder suits actuating chutes, hatches, or sorting mechanisms on farming equipment.
For applications requiring more force, stepping up to the 50 mm bore SC50 series provides 982 N of push force at the same 0.5 MPa pressure. If space is a constraint and less force is acceptable, the 32 mm bore SC32 series offers 402 N. This 250 mm stroke is well within the 1200 mm maximum standard stroke for the 40 mm bore, ensuring standard availability.
When replacing an existing cylinder, match five key points to ensure drop-in compatibility: identical bore and stroke, the same PT1/4 port thread, NBR seal material, basic (no bracket) mounting configuration, and the absence of a built-in magnet. For strokes of 300 mm or longer, always assess side loads; an unsupported rod can bend under lateral force, and an external guide or guided cylinder should be considered.
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 reaches 1130 N.
No. The AirTAC SC series is a tie-rod cylinder and is physically shorter than a comparable ISO 15552 profile cylinder. It is not dimensionally interchangeable with ISO 15552 mounts. It is a direct replacement only for another AirTAC SC tie-rod cylinder with the same bore, stroke, mounting, and port thread.
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