The AirTAC Airtac SC40 Standard Cylinder SC40X25SFA is a genuine double-acting standard air cylinder with a Ø40mm bore and 25mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X25SFA is a 40 mm bore, 25 mm stroke double-acting tie-rod cylinder delivering 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa). Its short 25 mm stroke combined with a 16 mm diameter piston rod makes it ideal for compact clamping, ejecting, and sorting stations where space is tight.
This model includes a built-in magnet (-S suffix) for direct mounting of CMSG/DMSG/EMSG sensors, plus an FA front rectangular flange (F-SC40FA) for rigid panel mounting on the rod side. The body length A is 142 mm, giving a total extended length of approximately 167 mm. Ports are PT1/4 with M12x1.25 rod thread, and the adjustable air cushion (21 mm) provides smooth end-of-stroke deceleration.
| Model | Airtac SC40 Standard Cylinder SC40X25SFA |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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. |
| ×25 | 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 25 mm stroke and 628 N push force at 0.5 MPa suit small part clamping in CNC fixtures, with sensor confirmation via the built-in magnet.
Quick 25 mm extend/retract cycles for ejecting lightweight parts from conveyors or indexing tables, with front flange mounting for stable alignment.
The -S magnet allows CMSG/DMSG sensors to confirm gate position in sorting or diverting stations, ensuring reliable automation sequencing.
For higher force, step up to the SC50 bore (982 N at 0.5 MPa); for a lighter, more compact solution, the SC32 delivers 402 N. The 25 mm stroke is a standard length within the 1200 mm maximum for bore 40. The FA front flange mounts the cylinder rigidly to a panel on the rod side—ideal when the load is aligned axially. When replacing, match bore (40 mm), stroke (25 mm), PT1/4 port thread, FA front flange mounting, and the -S magnet for 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. The -S suffix indicates a built-in magnet, so AirTAC CMSG (reed) or DMSG/EMSG (solid-state) sensors can be clamped directly onto the barrel tie-rods for position sensing.
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