The AirTAC Airtac SCD Standard Cylinder SCD80X75S 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, 75mm stroke, PT3/8 ports and adjustable end cushioning.
The SCD80X75S delivers a balanced 2268 N of thrust in both directions at 0.5 MPa, thanks to its double-rod design where the 25 mm rod passes through both end caps. This symmetry eliminates force differential, making it ideal for applications where a return stroke must match the power of the advance stroke, such as operating a dual-sided clamp or a shuttle gate.
With a 75 mm stroke and a body length A of 257 mm, this cylinder is compact yet robust. The built-in magnet, denoted by the -S suffix, allows for direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for precise, non-contact end-of-stroke or mid-stroke position sensing without external brackets.
| Model | Airtac SCD Standard Cylinder SCD80X75S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 75 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. |
| ×75 | 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 equal 2268 N force in both directions at 0.5 MPa makes this cylinder perfect for a two-sided clamp that must grip a part with identical pressure from both sides simultaneously.
Use the integrated magnet to mount CMSG sensors and confirm the position of a shuttle table at both ends of the 75 mm stroke, ensuring a part has fully transferred before the next cycle begins.
The through-rod design allows you to mount a tool on the front and a counter-balance or secondary stripper plate on the rear rod, synchronizing two actions with a single pneumatic circuit.
Choose this 80 mm bore when the 63 mm model's 1402 N at 0.5 MPa is insufficient for your dual-sided tooling. If your application only requires force from one end, a single-rod SC80 cylinder offers a higher push force because the full bore area is available. For direct replacement, match the 80 mm bore, 75 mm stroke, PT port thread, basic mounting, and the -S magnet option; the rear rod protrusion means the overall length is longer than a standard SC80 of the same stroke, so verify your machine envelope.
Double-rod checklist
The push and pull forces are identical because the rod area is subtracted from both sides of the piston. At 0.5 MPa it provides 2268 N, at 0.7 MPa it provides 3175 N, and at the maximum operating pressure of 0.9 MPa it delivers 4082 N.
Choose an SCD when you need equal force and speed in both directions, or when you need to attach tooling, a sensor flag, or a mechanical stop to the rear rod. The through-rod also provides better guidance and anti-rotation than a single-rod cylinder, though it is not a replacement for a fully guided cylinder under high side loads.
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