The AirTAC Airtac SC40 Standard Cylinder SC40X250STC 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 SC40X250STC is a double-acting pneumatic cylinder delivering 628 N of push force at 0.5 MPa, rising to 1130 N at 0.9 MPa. With a 40 mm bore and 250 mm stroke, it suits medium-duty linear tasks where a compact tie-rod body is preferred. The 16 mm diameter piston rod and 21 mm adjustable air cushion provide reliable end-of-stroke deceleration.
This model includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, plus a centre trunnion mount (TC) supplied with the TCM1 bracket for pivoting applications. The total extended body length is approximately 392 mm. As a genuine AirTAC component, it is factory-tested to 1.5 MPa proof pressure and operates on filtered air from -20 to +70 °C.
| Model | Airtac SC40 Standard Cylinder SC40X250STC |
|---|---|
| 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 centre trunnion mount allow the cylinder to pivot smoothly, making it ideal for actuating diverter arms or sorting gates on packaging and material-handling conveyors.
With 1130 N of clamping force at 0.9 MPa and magnetic piston sensing, this cylinder is well-suited for automated workholding fixtures where end-of-stroke confirmation is required.
The integrated TC centre trunnion mount handles pivoting loads directly, simplifying installation in toggle mechanisms, press linkages, and articulated machine arms.
Choose the SC40 when your application needs around 628 N of force at standard plant pressure. If you require more thrust, stepping up to the SC50 bore provides 982 N at the same 0.5 MPa. For strokes of 250 mm and above, ensure the rod is not subjected to significant side load; if side forces are present, add an external linear guide or consider a guided cylinder to protect the rod bearing from bending.
For direct replacement, match five key points: 40 mm bore, 250 mm stroke, PT port thread, centre trunnion (TC) mounting with the F-SC40TC bracket, and the built-in magnet for sensor compatibility. This tie-rod cylinder is shorter than an ISO 15552 profile and is not dimensionally interchangeable with those standards.
Quick checklist
At 0.5 MPa, the cylinder provides 628 N extending (push) and 528 N retracting (pull). At the maximum operating pressure of 0.9 MPa, the extending force reaches 1130 N. The theoretical maximum at 1.0 MPa is 128 kgf.
No. The AirTAC SC series is a tie-rod cylinder with a shorter overall body length than an ISO 15552 profile cylinder. It is not dimensionally interchangeable. It is a direct replacement only for another AirTAC SC40 cylinder matching the bore, stroke, PT ports, TC trunnion mount, and magnet option.
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