The AirTAC Airtac SC40 Standard Cylinder SC40X900S 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 SC40X900S is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, combining a 40 mm bore with a 900 mm stroke. At 0.5 MPa air pressure, it generates 628 N of push force and 528 N of pull force, making it a capable mid-range actuator for linear transfer and positioning tasks. The built-in magnet (denoted by the -S suffix) allows direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors on the barrel for non-contact position feedback.
This model features a 16 mm diameter piston rod with an M12x1.25 male thread and PT1/4 ports. The adjustable air cushion at each end (21 mm cushion length) decelerates the piston smoothly, reducing end-of-stroke impact. The body length A is 142 mm, giving an approximate extended length of 1042 mm. The standard operating temperature range with the default TPU seals is -20 to +70 °C.
| Model | Airtac SC40 Standard Cylinder SC40X900S |
|---|---|
| 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 and 628 N push force efficiently shuttle components between distant conveyors or workstations in automated assembly lines.
The built-in magnet enables CMSG/DMSG sensors to confirm open/closed jaw positions on a long-stroke welding or gluing fixture.
Operates a tall diverter gate on a packaging line, using the adjustable cushion to softly stop the 16 mm rod at each end of the 900 mm travel.
Select the SC40X900S when your application requires a thrust around 628 N at standard shop air. If you need more force, stepping up to the 50 mm bore (SC50) provides 982 N of push force at the same 0.5 MPa. For lighter, more compact needs, the 32 mm bore (SC32) delivers 402 N. Always ensure the rod is not subjected to significant side loading, especially at this 900 mm stroke length.
For a 900 mm stroke, the long, unsupported 16 mm rod is susceptible to bending under side loads. If the load is not guided externally, consider adding an external linear guide rail or switching to a guided cylinder to protect the rod bearing and seals from premature wear. When replacing an existing cylinder, match these five points: 40 mm bore, 900 mm stroke, PT1/4 port thread, the basic mounting (no bracket), and the built-in magnet (-S) for sensor compatibility.
Quick checklist
At 0.7 MPa (7 bar), the theoretical push force on the 40 mm bore is 879 N. The pull force on the retract stroke is lower due to the 16 mm rod area, delivering 528 N at 0.5 MPa.
Yes. The -S suffix in the model code SC40X900S confirms a built-in magnetic piston. You can clamp AirTAC CMSG (reed) or DMSG/EMSG (solid-state) sensors directly onto the barrel's sensor groove to detect piston position without any additional brackets.
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