The AirTAC Airtac SC40 Standard Cylinder SC40X25FB 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 SC40X25FB is a compact double-acting tie-rod cylinder delivering 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa). With a short 25 mm stroke and a 16 mm diameter piston rod, it is ideal for clamping, ejecting, and short-transfer tasks where space is tight.
This model comes configured with an FB rear rectangular flange (part F-SC40FB) for rigid end-face mounting. The standard TPU seals provide reliable operation from -20 to +70 °C, and the PT1/4 port thread connects directly to common pneumatic fittings.
| Model | Airtac SC40 Standard Cylinder SC40X25FB |
|---|---|
| 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 force at 0.5 MPa make it a direct fit for pneumatic clamping fixtures on milling and drilling workstations.
Rigid FB rear-flange mounting and a 16 mm rod provide stable alignment for ejecting small parts from injection-moulding tools.
Short, fast actuation suits light diverter gates on packaging conveyors, where the 30-800 mm/s speed range allows rapid cycling.
For higher force in the same mounting footprint, the SC50 series offers 982 N at 0.5 MPa. The short 25 mm stroke keeps the overall extended length to just 167 mm (body length A=142 mm + stroke), making it a good fit where axial space is limited. When replacing, match bore, stroke, PT port thread, FB rear flange mount, and confirm the magnet option (this model has no built-in magnet).
Quick checklist
At 0.7 MPa the SC40 bore generates 879 N of push force. The pull force at the same pressure is 528 N, accounting for the 16 mm rod area.
No. The SC series is a tie-rod cylinder and is physically shorter than an ISO 15552 profile cylinder, so it is not dimensionally interchangeable. Replace only with another AirTAC SC40 tie-rod cylinder matching the bore, stroke, PT port, and FB rear flange mount.
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