The AirTAC Airtac SCD Standard Cylinder SCD160X250S is a genuine double-acting DOUBLE-ROD air cylinder: the Ø40mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø160mm bore, 250mm stroke, PT3/4 ports and adjustable end cushioning.
The SCD160X250S is a heavy-duty double-rod pneumatic cylinder delivering equal force in both directions—9425 N at 0.5 MPa—thanks to its through-rod design that subtracts the 40 mm rod area from both piston sides. With a 250 mm stroke and a body length A of 352 mm, this cylinder is built for applications where a rear rod extension is needed for tooling, stroke sensing, or symmetrical load distribution.
This model includes a built-in magnet (denoted by the -S suffix), allowing CMSG, DMSG, or EMSG sensors to be mounted directly onto the tie-rod barrel for non-contact position feedback. Operating on filtered air from 0.15 to 1.0 MPa, it features an adjustable pneumatic cushion (29 mm length) at both ends to decelerate large inertial loads smoothly, and uses PT3/4 ports with an M36x2 rod thread.
| Model | Airtac SCD Standard Cylinder SCD160X250S |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø160 mm |
| Rod diameter | Ø40 mm (both ends) |
| Stroke | 250 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 29 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 | 9425 N | 9425 N |
| 0.7 MPa | 13195 N | 13195 N |
| Max (@1.0 MPa) | 1922 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). |
|---|---|
| 160 | Bore size in mm. |
| ×250 | 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 40 mm through-rod extends from both ends, allowing a die to be mounted on each rod for simultaneous two-sided stamping or embossing with perfectly synchronized motion.
With 9425 N of force available in both directions, this cylinder powers heavy transfer shuttles. The rear rod can carry a sensor flag for end-of-stroke confirmation without adding external brackets.
The equal push and pull force makes this cylinder ideal for pressing or straightening fixtures where the load resistance is the same in both directions, ensuring consistent cycle times.
Choose the SCD160 bore when your application needs roughly 9425 N of balanced thrust at standard plant pressure. If you can accept slightly less force and a smaller footprint, the SCD125 bore provides 5734 N at 0.5 MPa. For higher thrust requirements, the SCD200 bore steps up to 15080 N at the same pressure. This double-rod unit is the right choice when you need to attach tooling or a cam to the rear rod; if you only need force from one end, a single-rod SC160 cylinder is a more economical alternative. For a direct replacement, match the 160 mm bore, 250 mm stroke, PT port thread, basic mounting, and the integrated magnet (-S) of this SCD model.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it produces 9425 N, at 0.7 MPa it produces 13194 N, and at the maximum operating pressure of 0.9 MPa it produces 16964 N of force in both directions.
Choose the SCD when you need a rear rod extension to mount tooling, a stopper, or a sensor target. The through-rod also provides better guidance and anti-rotation than a single-rod cylinder, though it is not a substitute for an externally guided unit under high side loads. It also guarantees equal speed and force in both directions, which a single-rod cylinder cannot do.
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