The AirTAC Airtac SC40 Standard Cylinder SC40X38S is a genuine double-acting standard air cylinder with a Ø40mm bore and 38mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X38S is a double-acting tie-rod cylinder with a 40 mm bore and 38 mm stroke, factory-equipped with a built-in magnet for easy sensor mounting. At 0.5 MPa air pressure it generates 628 N pushing force, making it a capable actuator for short-stroke clamping and sorting tasks.
This model uses a 16 mm diameter piston rod with M12x1.25 male threads and PT1/4 ports. The adjustable air cushion at each end (21 mm length) decelerates the piston smoothly, and the -S suffix means CMSG/DMSG/EMSG reed or solid-state sensors clamp directly onto the barrel without extra brackets.
| Model | Airtac SC40 Standard Cylinder SC40X38S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 38 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. |
| ×38 | 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 38 mm stroke and 628 N force at 0.5 MPa suit compact jigs and fixtures where a part must be clamped quickly and released with sensor confirmation via the built-in magnet.
Use the SC40X38S to flip a small diverter gate on a conveyor line. The magnetic piston lets you confirm gate position with a CMSG sensor at each end of travel.
Push a finished part off a scale or checkweigher. The 16 mm rod is stiff enough for a short, direct push, and the adjustable cushion prevents impact bounce.
Choose the SC40 bore when your application needs between 400 and 600 N of force at standard plant pressure; the next step down is the 32 mm bore (402 N push at 0.5 MPa), and stepping up to the 50 mm bore delivers 982 N. This 38 mm stroke is a standard length within the 40 mm bore’s 1200 mm maximum.
For a direct replacement, match five points: 40 mm bore, 38 mm stroke, PT1/4 ports, the built-in magnet (-S), and the basic (no accessory) mounting. If you later need a pivoting mount, the F-SC40CA rear clevis or F-SC40TC centre trunnion can be ordered separately.
Quick checklist
At 0.7 MPa the SC40 bore generates 879 N of force on the push stroke and 528 N on the pull stroke at 0.5 MPa (pull force at 0.7 MPa is approximately 739 N based on the rod area). Always confirm the pull force from the datasheet for your specific pressure.
Yes, provided the original was also a 40 mm bore, 38 mm stroke, PT-port tie-rod cylinder. The -S magnet adds sensor capability without changing the envelope, so it drops into the same space. If your original did not have a magnet, the SC40X38S still works mechanically; you simply gain the option to add sensors.
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