The AirTAC Airtac SC40 Standard Cylinder SC40X75N is a genuine double-acting standard air cylinder with a Ø40mm bore and 75mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X75N is a double-acting tie-rod cylinder delivering 628 N of push force at 0.5 MPa and up to 1130 N at the maximum operating pressure of 0.9 MPa. With a 40 mm bore and 75 mm stroke, this model uses a 16 mm diameter piston rod with M12x1.25 male threads and PT1/4 ports.
The N suffix specifies NBR (nitrile) seals, making this cylinder suitable for standard industrial environments within the standard -20 to +70 °C temperature range. The adjustable air cushion at both ends, with a 21 mm cushion length, decelerates the piston smoothly to reduce end-of-stroke impact without locking the load.
| Model | Airtac SC40 Standard Cylinder SC40X75N |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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. |
| ×75 | 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 reliably actuates diverter gates on light-duty conveyor lines, directing packages or components with consistent speed.
Ideal for pneumatic clamping in machining or assembly fixtures, the 40 mm bore provides secure holding force without damaging delicate workpieces.
NBR seals handle outdoor air quality in covered farming equipment, powering hatch lifts or small implement adjustments with the 75 mm stroke.
For applications requiring more force, stepping up to the 50 mm bore SC50 series provides 982 N at 0.5 MPa. If a shorter stroke or lighter actuator is acceptable, the 32 mm bore offers 402 N. The 75 mm stroke is a standard length and well-supported; for strokes over 300 mm, always evaluate side-loading on the 16 mm rod and consider an external guide to prevent rod bearing damage.
To replace an existing unit, match five points: 40 mm bore, 75 mm stroke, PT1/4 port thread, NBR seal material, and basic (no bracket) mounting. This cylinder is a direct replacement for another AirTAC SC40X75N tie-rod cylinder.
Quick checklist
At the standard operating pressure of 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, the push force increases to 1130 N. The theoretical maximum force at 1.0 MPa is 128 kgf.
No. The SC40X75N is a double-acting cylinder that requires continuous air pressure to maintain position. If pressure is exhausted or the directional valve is centered, the piston will drift. For load-holding, add a pilot-operated check valve or an external mechanical rod lock.
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