The AirTAC Airtac SC40 Standard Cylinder SC40X1280S is a genuine double-acting standard air cylinder with a Ø40mm bore and 1280mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X1280S is a double-acting tie-rod cylinder delivering 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa). With a 40 mm bore and a 16 mm diameter piston rod, this model is configured with a non-standard 1280 mm stroke, exceeding the standard maximum of 1200 mm for this bore size.
This unit includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors on the barrel for contactless position sensing. The body length A is 142 mm, giving a total extended length of approximately 1422 mm. It uses PT1/4 ports and an M12x1.25 rod thread, with adjustable air cushioning for smooth deceleration.
| Model | Airtac SC40 Standard Cylinder SC40X1280S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 1280 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. |
| ×1280 | 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 1280 mm stroke pushes or pulls components across wide conveyor gaps or between distant workstations, with sensor feedback for end-of-stroke confirmation.
Operates a tall diverter gate in a material handling line, using the built-in magnet to signal open and closed positions to the PLC for high-speed sorting.
Drives a lightweight lifting mast or pusher plate in a packaging machine, where the long stroke is essential and an external guide system handles the off-center loads.
For higher force requirements, stepping up to a 50 mm bore provides 982 N of push force at 0.5 MPa. If space is a constraint, the 32 mm bore offers 402 N. This cylinder is a genuine AirTAC SC tie-rod type, not an ISO 15552 profile, so replacements must match bore, stroke, PT port thread, and the integrated magnet option.
With a stroke of 1280 mm, the long, slender 16 mm rod is susceptible to bending under side loads. An external guide rail or a self-guided cylinder is strongly recommended to prevent rod bearing damage and ensure linear motion stability.
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. The theoretical maximum at 1.0 MPa is 128 kgf.
The -S suffix indicates a magnetized piston, which allows AirTAC CMSG (reed) or DMSG/EMSG (solid-state) sensors to be clamped directly onto the cylinder barrel. The sensors detect the piston's magnetic field to provide a non-contact switching signal at any point along the stroke.
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