The AirTAC Airtac SC40 Standard Cylinder SC40X250 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 SC40X250 is a double-acting tie-rod cylinder with a 40 mm bore and 250 mm stroke, delivering a push force of 628 N at 0.5 MPa and up to 1130 N at the maximum operating pressure of 0.9 MPa. Its 16 mm diameter piston rod and 21 mm adjustable air cushion provide reliable deceleration for mid-range linear tasks.
With a compact body length A of 142 mm, the total extended length reaches approximately 392 mm, making it a space-efficient choice for automation frames. This genuine AirTAC SC series actuator uses filtered air and operates within a standard temperature range of -20 to +70 °C with TPU seals.
| Model | Airtac SC40 Standard Cylinder SC40X250 |
|---|---|
| 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 reliably actuates gates or diverters on light to medium-duty conveyor lines, sorting cartons by size or destination.
Provides consistent holding force for jigs in CNC machining or assembly stations, with the 16 mm rod offering good rigidity for the 250 mm stroke.
Operates louvers or airflow gates in agricultural or HVAC systems, leveraging the adjustable cushion to handle frequent cycling with smooth end-of-stroke deceleration.
For applications needing more force, stepping up to the 50 mm bore SC50 series provides 982 N at 0.5 MPa, while the 32 mm bore offers 402 N for lighter, faster cycles. At a 250 mm stroke, ensure the rod is not subjected to significant side loads; if the load is not guided, consider adding an external linear guide to prevent rod bearing wear and bending.
When replacing an existing cylinder, match five key points: the 40 mm bore, 250 mm stroke, PT1/4 port thread, the specific mounting accessory (this basic model uses no bracket), and the magnet option (this model has no built-in magnet). The SC series is a tie-rod design, not an ISO 15552 profile, so dimensional interchangeability is limited to other AirTAC SC40 cylinders.
Quick checklist
At the standard 0.5 MPa operating pressure, 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. The theoretical maximum force at 1.0 MPa is 128 kgf.
No. The AirTAC SC series is a tie-rod cylinder and is physically shorter than an ISO 15552 cylinder of the same bore and stroke. It will only directly interchange with another AirTAC SC40 tie-rod cylinder with matching port thread (PT1/4) and mounting configuration.
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