The AirTAC Airtac SC40 Standard Cylinder SC40X250SFB is a genuine double-acting standard air cylinder with a Ø40mm bore and 250mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X250SFB is a double-acting pneumatic cylinder delivering 628 N of push force at 0.5 MPa and up to 1130 N at 0.9 MPa operating pressure. With a 40 mm bore and 250 mm stroke, it is built on a durable tie-rod construction that is shorter than an equivalent ISO 15552 cylinder, saving machine space.
This model includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, and a rear rectangular flange (FB, part F-SC40FB) for rigid end-face mounting. The 16 mm diameter piston rod and PT1/4 port ensure reliable pneumatic connections, while the adjustable air cushion decelerates the 250 mm stroke smoothly.
| Model | Airtac SC40 Standard Cylinder SC40X250SFB |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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. |
| ×250 | 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 628 N push force at 0.5 MPa is ideal for actuating part stops or diverting gates on light to medium-duty conveyor lines, with the FB flange providing a rigid fixed mounting point.
Delivers consistent clamping pressure for CNC jigs and welding fixtures. The built-in magnet allows end-of-stroke sensing to confirm the clamp is fully engaged before a cycle starts.
Smoothly pushes cartons or products into packaging machines. The adjustable cushion absorbs impact at the end of the 250 mm stroke, protecting the cylinder and product from shock.
For applications needing more force, stepping up to the 50 mm bore SC50 series provides 982 N at 0.5 MPa. If space is a constraint, the 32 mm bore SC32 offers 402 N. This cylinder is a direct replacement only for another AirTAC SC40 tie-rod cylinder matching the 250 mm stroke, PT1/4 port, FB rear flange mount, and -S magnet option. At this 250 mm stroke, ensure the load is guided if any side forces are present, as the 16 mm rod can experience bending moments under off-axis loads.
Quick checklist
At the standard 0.5 MPa operating pressure, the push force is 628 N and the pull force is 528 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 1130 N.
No. The AirTAC SC series is a tie-rod cylinder with a shorter overall body length than an ISO 15552 profile cylinder. It is dimensionally interchangeable only with another AirTAC SC40 tie-rod cylinder of the same stroke, port thread, and mounting configuration.
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