The AirTAC Airtac SCD Standard Cylinder SCD200X700 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, 700mm stroke, PT3/4 ports and adjustable end cushioning.
The SCD200X700 is a heavy-duty double-acting pneumatic cylinder engineered for applications demanding identical thrust in both directions. With a 200 mm bore and a 40 mm through-rod extending from both end caps, it provides a balanced 15080 N of force at 0.5 MPa—rising to 27143 N at the maximum operating pressure of 0.9 MPa—making it ideal for large-scale symmetrical tooling.
This model features a 700 mm standard stroke, well within the 1500 mm maximum for the bore. The adjustable air cushion on each end is 33 mm long, effectively decelerating high-inertia loads. The body length A(SCD) is 362 mm, and the rod carries an M36x2 thread for robust attachment of fixtures on either side.
| Model | Airtac SCD Standard Cylinder SCD200X700 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø200 mm |
| Rod diameter | Ø40 mm (both ends) |
| Stroke | 700 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. |
| ×700 | 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 force and speed in both directions make the SCD200X700 perfect for heavy transfer shuttles, ensuring smooth, predictable motion when moving large pallets or frames between stations.
With an M36x2 rod protruding from both ends, it can drive two identical press platens simultaneously, doubling throughput in laminating or forming operations with a single cylinder.
The through-rod design is ideal for cable or web tensioning where a sensor flag on the rear rod monitors position, providing closed-loop feedback without adding offset load to the main carriage.
For applications requiring slightly less force, the SCD160X700 offers 9425 N at 0.5 MPa from a 160 mm bore, which can reduce energy consumption if the load permits. If the task involves a significant off-centre load, a single-rod SC200 cylinder might be paired with an external guide, but the SCD's dual-rod support inherently provides better resistance to deflection than a single rod. For a drop-in replacement, match the 200 mm bore, 700 mm stroke, PT port thread, and ensure any mounting accessories from the FA, LB, or TC subset are correctly specified.
Double-rod checklist
Because the piston rod passes through both ends of the cylinder, the effective pressure area is identical for extension and retraction. At the standard 0.5 MPa operating pressure, the force is 15080 N in both directions. This increases to 21111 N at 0.7 MPa and reaches a maximum of 27143 N at 0.9 MPa.
Choose the SCD200X700 when your application requires equal thrust and speed in both directions, or when you need to mount tooling, a mechanical stop, or a position sensor on the rear rod. The dual-rod support also provides superior guidance and anti-rotation compared to a single-rod cylinder, though it is not a replacement for a fully guided unit under high side loads.
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