The AirTAC Airtac SC40 Standard Cylinder SC40X900 is a genuine double-acting standard air cylinder with a Ø40mm bore and 900mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X900 is a double-acting pneumatic cylinder delivering 628 N of push force at 0.5 MPa and up to 1130 N at 0.9 MPa operating pressure. With a 40 mm bore and 900 mm stroke, it uses a 16 mm diameter piston rod and PT1/4 ports, making it a practical choice for medium-length linear transfer tasks.
This tie-rod cylinder features an adjustable air 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 1042 mm. Operating temperature range is -20 to +70 °C with its standard TPU seals.
| Model | Airtac SC40 Standard Cylinder SC40X900 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 900 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. |
| ×900 | 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 900 mm stroke is ideal for pushing boxes or components across a conveyor line, with 628 N of force at standard shop air pressure.
Suitable for clamping fixtures in woodworking or assembly jigs where the clamping point is set back, requiring an extended reach.
Actuates a diverter gate on a gravity chute or conveyor, using its long stroke to fully extend and retract a sorting mechanism.
For applications needing more force, stepping up to the SC50 bore provides 982 N at 0.5 MPa, while the SC32 bore offers a more compact 402 N alternative. The SC40X900 is a standard stroke model, as the maximum standard stroke for bore 40 is 1200 mm.
At 900 mm stroke, ensure the rod is not subjected to significant side loading, as long, unsupported rods can bend. For guided motion, consider pairing this cylinder with an external linear guide. When replacing, match bore (40), stroke (900), PT port thread, basic mounting, and the absence of a magnet to ensure drop-in compatibility with another AirTAC SC40 series cylinder.
Quick checklist
At 0.7 MPa operating pressure, the theoretical push force is 879 N. The pull force on the retract stroke at the same pressure is lower due to the 16 mm rod area, calculated at 739 N.
No. The SC series is a standard double-acting cylinder and will drift or drop if pressure is exhausted. To hold a position without live air pressure, you must add an external rod brake, a mechanical lock, or a pilot-operated check valve.
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