The AirTAC Airtac SC40 Standard Cylinder SC40X1250S is a genuine double-acting standard air cylinder with a Ø40mm bore and 1250mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X1250S is a double-acting single-rod pneumatic cylinder with a 40 mm bore and an extended 1250 mm non-standard stroke, factory-built with a built-in magnet for barrel-mounted sensors. At 0.5 MPa it generates 628 N pushing force, and at the maximum operating pressure of 0.9 MPa it reaches 1130 N, driven by a 16 mm diameter piston rod with M12x1.25 male threads.
This model uses PT1/4 ports, adjustable air cushioning with a 21 mm cushion length, and TPU seals rated for -20 to +70 °C. The body length A is 142 mm, giving a total extended length of approximately 1392 mm. The -S suffix equips the cylinder with a magnetic piston, allowing CMSG, DMSG, or EMSG reed and solid-state sensors to clamp directly onto the tie-rod barrel for reliable end-of-stroke detection.
| Model | Airtac SC40 Standard Cylinder SC40X1250S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 1250 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. |
| ×1250 | 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 1250 mm stroke and 628 N push force suit long-reach diverters on packaging lines, moving boxes or totes across wide conveyor sections with sensor-confirmed end positions.
With 528 N pull force at 0.5 MPa, this cylinder can raise and lower lightweight panels or access doors over a 1.25 m travel, using the built-in magnet for open/closed verification.
Provides a long, controlled linear stroke for moving a glue head or dispenser across large workpieces, with adjustable cushioning to soften the stop at each end of the 1250 mm sweep.
Choose the SC40 bore when 628 N at 0.5 MPa covers the load; for the next step up, the SC50 delivers 982 N at the same pressure. For this 1250 mm stroke—which exceeds the 1200 mm standard maximum for bore 40—the long unsupported rod is susceptible to bending under side load: add an external linear guide or switch to a guided cylinder if the load is not purely axial. When replacing an existing unit, match five points: 40 mm bore, 1250 mm stroke, PT1/4 port thread, basic mount (no factory bracket), and the -S magnetic piston.
Quick checklist
At 0.7 MPa the SC40 bore produces 879 N of pushing force. The maximum operating force at 0.9 MPa is 1130 N. These values are for a double-acting cylinder; pulling force is lower due to the 16 mm rod area.
Yes. The -S suffix indicates a built-in magnetic piston. You can clamp AirTAC CMSG, DMSG, or EMSG reed and solid-state sensors directly onto the cylinder's tie-rod barrel to detect piston position anywhere along the stroke, which is especially useful for intermediate or end-of-stroke confirmation on such a long travel.
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