The AirTAC Airtac SC40 Standard Cylinder SC40X390SFA is a genuine double-acting standard air cylinder with a Ø40mm bore and 390mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X390SFA is a double-acting pneumatic cylinder delivering 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa). Its 390 mm stroke suits medium-reach clamping, pressing, and material-transfer tasks. The 16 mm diameter piston rod and PT1/4 ports provide a robust fluid path for consistent cycling.
This model includes a built-in magnet (-S suffix) for direct mounting of CMSG/DMSG/EMSG sensors, enabling precise end-of-stroke detection without external brackets. The FA front rectangular flange (F-SC40FA) allows rigid panel mounting on the rod side, keeping the cylinder body stable under axial loads.
| Model | Airtac SC40 Standard Cylinder SC40X390SFA |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 390 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. |
| ×390 | 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 390 mm stroke and 628 N force at 0.5 MPa suit medium-reach pneumatic clamps in CNC fixtures, holding workpieces securely during machining cycles.
Ideal for linear pushers on conveyor lines, moving components between stations with the front flange providing a stable, rigid mounting point.
The built-in magnet enables CMSG/DMSG sensors to confirm full extend and retract, critical for automated assembly sequences requiring position verification.
Choose the SC40 when 628 N at 0.5 MPa meets your load requirement. For higher force in the same bore class, step up to the SC50 (982 N at 0.5 MPa). At 390 mm stroke, the rod is well-supported within standard limits, but avoid direct side loads—use an external guide if the load is not purely axial. For replacement, match bore (40 mm), stroke (390 mm), PT1/4 ports, FA front flange mount, and the -S magnet option to ensure sensor compatibility.
Quick checklist
At 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, push force reaches 1130 N. The theoretical maximum at 1.0 MPa is 128 kgf.
Yes, if your existing cylinder is an AirTAC SC tie-rod type with 40 mm bore, 390 mm stroke, PT1/4 ports, FA front flange mount, and a magnetic piston for sensors. This is not an ISO 15552 cylinder, so dimensional interchangeability with ISO 15552 profiles is not guaranteed.
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