The AirTAC Airtac SCD Standard Cylinder SCD80X380S is a genuine double-acting DOUBLE-ROD air cylinder: the Ø25mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø80mm bore, 380mm stroke, PT3/8 ports and adjustable end cushioning.
The SCD80X380S is a double-acting, double-rod pneumatic cylinder where identical force is produced in both directions because the 25 mm rod passes through both end caps. At 0.5 MPa it provides 2268 N of thrust each way, making motion symmetrical for tooling mounted on either end of the piston rod.
This 380 mm stroke model includes a built-in magnet (the -S suffix) so CMSG, DMSG or EMSG reed and solid-state sensors can be clamped directly onto the tie-rod barrel for non-contact position sensing. The body length A(SCD) is 257 mm and the adjustable air cushion at each end is 28 mm, giving smooth deceleration of the moving mass before the end cap is reached.
| Model | Airtac SCD Standard Cylinder SCD80X380S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 380 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| 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, 28 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SCD (double-rod) datasheet. Because the rod runs through both caps, the effective area is (bore² − rod²) in both directions. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | 3175 N |
| Max (@1.0 MPa) | 463 kgf | |
Push and pull are EQUAL on a double-rod cylinder — both chambers lose the rod area, so effective area = (bore² − rod²) each way. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | Bore size in mm. |
| ×380 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod), SCJ (adjustable stroke), SCT (multi-position). SCD mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
The through-rod design allows identical tooling plates to be mounted on both ends, enabling a single cylinder to shuttle parts between two parallel conveyor lines with equal speed and force in each direction.
The built-in magnet works across the full barrel length. Mount a DMSG sensor on the rear rod side to confirm the piston has fully retracted, even when the front rod area is obstructed by tooling.
With two rod bearings supporting the piston rod at both ends, the SCD80X380S offers better resistance to rod rotation than a single-rod cylinder, helping maintain alignment in simple push applications without adding an external guide.
With 2268 N of force available at 0.5 MPa, the SCD80 suits mid-range transfer and pressing tasks. If you need roughly 40% more thrust, the SCD100 bore offers 3681 N at the same pressure, while stepping down to the SCD63 reduces force to 1402 N. For applications where the rear rod extension is not needed, a single-rod SC80 cylinder is a lighter and more compact alternative.
When replacing an existing unit, match five points: 80 mm bore, 380 mm stroke, PT port thread, basic mounting (no bracket), and the -S magnet for sensor compatibility. The 380 mm stroke is within the 1500 mm maximum standard stroke for this bore, but at longer strokes the unsupported rod mass increases—if side loads are present, consider an external guide rail or a guided cylinder instead of relying solely on the double-rod bearing support.
Double-rod checklist
Because it is a double-rod cylinder, the effective piston area is the same on both sides. The force is 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at the maximum operating pressure of 0.9 MPa. The theoretical force at 1.0 MPa is 463 kgf.
Choose the SCD when you need to attach tooling, a stopper, or a sensor flag to the rear rod, or when you require perfectly equal force and speed in both directions. The dual-rod bearing setup also provides better guidance and reduces piston rod rotation compared to a single-rod cylinder, though it is not a substitute for a fully guided cylinder under heavy side loads.
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