The AirTAC Airtac SC40 Standard Cylinder SC40X71 is a genuine double-acting standard air cylinder with a Ø40mm bore and 71mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X71 is a non-standard stroke variant in the AirTAC SC tie-rod cylinder family, delivering a push force of 628 N at 0.5 MPa. Its 40 mm bore and 16 mm diameter piston rod make it a compact yet robust choice for light-to-medium pneumatic tasks where a standard 75 mm stroke is too long.
With a body length A of 142 mm, the total extended length reaches approximately 213 mm. The adjustable air cushion (21 mm) at both ends decelerates the piston smoothly, protecting end caps from impact. This model uses the default TPU seals for a standard operating range of -20 to +70 °C and PT1/4 threaded ports.
| Model | Airtac SC40 Standard Cylinder SC40X71 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 71 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. |
| ×71 | 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.
Pushes lightweight components off a conveyor line where a 71 mm stroke precisely matches the lane width, using its 628 N force at 0.5 MPa.
Applies consistent clamping pressure in a machining jig, with the 16 mm rod providing good rigidity for the short 71 mm extension.
Cycles a test probe or sensor into position repeatedly, leveraging the double-acting design for controlled extension and retraction.
This 40 mm bore cylinder generates 628 N at 0.5 MPa. If your load requires more force, stepping up to a 50 mm bore (SC50 series) provides 982 N at the same pressure. For a smaller footprint with less force, the 32 mm bore offers 402 N. Always match replacement cylinders on bore, stroke, port thread (PT), and mounting style.
For this 71 mm stroke, side loading is generally not a concern in typical applications. However, ensure the load is guided externally if any lateral force is present, as the SC series relies on its internal bushings for axial loads only.
Quick checklist
At 0.5 MPa (5 bar), 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.
Yes, provided the original was a 40 mm bore SC series with a 71 mm stroke, PT1/4 ports, and basic (no bracket) mounting. The SC is a tie-rod design, so it is not dimensionally interchangeable with ISO 15552 profile cylinders.
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