The AirTAC Airtac SCD Standard Cylinder SCD80X175 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, 175mm stroke, PT3/8 ports and adjustable end cushioning.
The SCD80X175 is an 80 mm bore double-rod pneumatic cylinder where the piston rod extends from both ends, delivering identical push and pull thrust in each direction. At a standard 0.5 MPa air supply, this model produces 2268 N of force on both the extend and retract strokes, rising to 4082 N at the maximum operating pressure of 0.9 MPa, making it a balanced choice for symmetric tooling or two-sided actuation tasks.
With a 175 mm stroke, the 25 mm diameter through-rod provides inherent anti-rotation stability and allows a rear rod extension to mount a sensor flag, limit stop, or secondary tool. The cylinder features an adjustable air cushion at both ends (28 mm cushion length) to decelerate the piston smoothly, and its PT3/8 ports connect to standard pneumatic circuitry. The retracted body length A is 257 mm.
| Model | Airtac SCD Standard Cylinder SCD80X175 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 175 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. |
| ×175 | 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 push-pull force of 2268 N at 0.5 MPa makes the SCD80X175 ideal for shuttling a workpiece or fixture between two stations, with the rear rod available to actuate a secondary mechanism or confirm position.
Use the front rod for a press tool and the rear rod for an ejector or counter-support. The balanced force output ensures both actions occur with the same power, simplifying the pneumatic circuit design.
Mount a DMSG magnetic sensor on the barrel to detect piston position, while using the exposed rear rod end as a mechanical flag for a secondary limit switch, providing redundant end-of-stroke confirmation.
Select the SCD80X175 when your application requires equal force and speed in both directions from a single actuator. If you need more thrust, the SCD100 bore provides 3681 N at 0.5 MPa; for a lighter, more compact solution, the SCD63 bore offers 1402 N. This double-rod unit is the right choice over a single-rod SC cylinder when you need to mount tooling or sensors on both sides of the piston, or when the improved rod guidance of a through-rod is beneficial—though it is not a substitute for a fully guided cylinder under significant side loads.
For a direct replacement, match the 80 mm bore, 175 mm stroke, PT port thread, basic mounting style, and the absence of a magnet. This ensures a drop-in fit for an existing AirTAC SCD80X175 unit.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it delivers 2268 N, at 0.7 MPa it delivers 3175 N, and at the maximum operating pressure of 0.9 MPa it delivers 4082 N in both directions.
Choose the SCD when you need to mount tooling, a stop, or a sensor target on the rear rod, or when the application demands perfectly equal force and speed in both directions. The through-rod also provides better guidance than a single-rod cylinder, though it does not replace a dedicated guided cylinder for high side loads.
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