The AirTAC Airtac SC40 Standard Cylinder SC40X325N is a genuine double-acting standard air cylinder with a Ø40mm bore and 325mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X325N is a double-acting tie-rod cylinder with a 40 mm bore and 325 mm stroke, fitted with NBR (nitrile) seals for general-purpose pneumatic applications. It produces a push force of 628 N at 0.5 MPa and 1130 N at the maximum operating pressure of 0.9 MPa, making it a capable mid-range actuator for automation tasks.
This model features a 16 mm diameter piston rod with an M12x1.25 rod-end thread and PT1/4 port connections. The 21 mm adjustable air cushion at each end decelerates the piston smoothly, reducing end-of-stroke impact. With a body length A of 142 mm, the total extended length is approximately 467 mm.
| Model | Airtac SC40 Standard Cylinder SC40X325N |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 325 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. |
| ×325 | 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.
Operates diverter gates and stops on light to medium-duty conveyor lines, where the 628 N push force at standard line pressure is sufficient for reliable part sorting.
Provides consistent clamping force for jigs and assembly fixtures. The NBR seals offer good wear resistance for the repetitive cycling common in manufacturing cells.
Suited for actuating levers and linkages on seeding or spraying equipment, where the 40 mm bore provides a robust force reserve for mechanical adjustments in the field.
Select the SC40 bore when your application requires a push force between roughly 630 N and 1130 N. If your load demands more force, consider stepping up to the SC50 bore, which provides 982 N of push force at the same 0.5 MPa pressure. For lighter, more compact requirements, the SC32 bore delivers 402 N.
For this 325 mm stroke length, be mindful of side loads. Long, unsupported piston rods are susceptible to bending under lateral forces. If your application involves any off-axis loading, use an external guide rail or a guided cylinder to protect the rod bearings and ensure reliable service life. When replacing this cylinder, match the 40 mm bore, 325 mm stroke, PT port thread, basic mounting, and NBR seal material.
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 SC40X325N is a double-acting cylinder and will not hold its position if air pressure is exhausted or lost. The piston rod can drift or drop. For load holding without live pressure, you must add an external mechanical lock, a rod brake, or a pilot-operated check valve in the circuit.
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