The AirTAC Airtac SCD Standard Cylinder SCD200X175 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. Ø200mm bore, 175mm stroke, PT3/4 ports and adjustable end cushioning.
The SCD200X175 is a heavy-duty double-rod pneumatic cylinder that outputs an identical 15080 N of force in both directions at 0.5 MPa, thanks to its through-rod design where the 40 mm rod subtracts the same area from each piston face. This symmetry eliminates force differentials, making it perfect for tooling that must cycle with balanced thrust and speed in both extend and retract.
With a 175 mm stroke and a robust 362 mm body length, this cylinder handles large-scale transfer and clamping tasks. The adjustable air cushion (33 mm) decelerates the piston smoothly, while the PT3/4 ports supply ample flow for rapid cycling. It operates reliably on filtered air from 0.15 to 1.0 MPa.
| Model | Airtac SCD Standard Cylinder SCD200X175 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø200 mm |
| Rod diameter | Ø40 mm (both ends) |
| Stroke | 175 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, 33 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 | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | 21111 N |
| Max (@1.0 MPa) | 3075 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). |
|---|---|
| 200 | 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.
Moves heavy pallets or weldments between stations with equal force and speed in both directions, preventing the load from shifting due to asymmetric thrust.
A rear rod can mount a secondary forming die or stripper plate, allowing one cylinder to perform a two-step pressing or ejection operation in a compact footprint.
The protruding rear rod provides an ideal surface for attaching sensor flags or a cam for external limit switches, enabling full-stroke confirmation without barrel-mounted sensors.
For applications needing slightly less force, the SCD160 bore generates 9425 N at 0.5 MPa, while this 200 mm bore provides a substantial step up to 15080 N. If your task requires force in only one direction, a single-rod SC series cylinder might be a simpler choice, but for dual-sided tooling or where a rear rod is needed for stroke sensing, the SCD is the correct pick. A direct replacement must match the 200 mm bore, 175 mm stroke, PT3/4 ports, basic mounting, and the absence of a magnet.
At a 175 mm stroke, rod bending under side load is less critical than on very long strokes, but the dual-rod support still provides superior guidance compared to a single-rod cylinder. For any application imposing a perpendicular load on the rod end, an external guide rail or a dedicated guided cylinder is strongly recommended to protect the rod bearings and seals.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it delivers 15080 N, at 0.7 MPa it is 21111 N, and at the maximum operating pressure of 0.9 MPa it reaches 27143 N. The theoretical force at 1.0 MPa is 3075 kgf.
Choose the SCD when you need equal force and speed in both directions, or when you need to mount tooling, a stopper, or a sensor flag on the rear rod. The through-rod also provides better guidance and inherent anti-rotation compared to a single-rod cylinder, though it is not a substitute for an external guide under significant side loads.
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