The AirTAC Airtac SCD Standard Cylinder SCD200X200 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, 200mm stroke, PT3/4 ports and adjustable end cushioning.
The SCD200X200 is a heavy-duty double-rod pneumatic cylinder that delivers identical force in both directions—15080 N at 0.5 MPa—because the 40 mm rod passes through both end caps. This symmetry eliminates force differentials and makes the cylinder ideal for large transfer shuttles, dual-sided tooling, and applications where a rear rod extension is needed for stroke sensing or a mechanical stop.
With a 200 mm stroke and a body length A(SCD) of 362 mm, this model provides substantial reach within a robust tie-rod construction. The adjustable air cushion (33 mm) decelerates the piston mass smoothly at each end, protecting the end caps during high-cycle operation. The PT3/4 ports and M36x2 rod threads handle high flow rates, supporting speeds from 30 to 500 mm/s in this ISO 6430 class bore size.
| Model | Airtac SCD Standard Cylinder SCD200X200 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø200 mm |
| Rod diameter | Ø40 mm (both ends) |
| Stroke | 200 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. |
| ×200 | 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 15080 N force in both directions moves large pallets or fixtures smoothly between stations without speed or force asymmetry, simplifying pneumatic circuit design.
The through-rod design lets you mount a sensor flag or cam on the rear rod extension, keeping the front tooling area clear while providing accurate end-of-stroke detection.
Operate two identical press tools—one on each rod end—with perfectly synchronized motion and balanced force, doubling throughput in a single cycle.
For applications needing more force, the SCD250X200 steps up to 23562 N at 0.5 MPa with a 50 mm rod. If your load requires only one-sided actuation, the single-rod SC200X200 provides a higher push force (25120 N at 0.5 MPa) by using the full bore area on the push stroke. When replacing an existing SCD200X200, match all five points: 200 mm bore, 200 mm stroke, PT3/4 port thread, the specific SCD mounting accessory (such as the F-SC200TC centre trunnion if equipped), and the magnet option (-S) if sensors are fitted.
At this 200 mm stroke, the dual 40 mm rods provide better guidance than a single-rod cylinder, but they are not a substitute for a guided cylinder under significant side loads. For long-stroke applications with off-axis forces, consider adding an external linear guide or switching to a dedicated guided cylinder to prevent rod bending and premature bearing wear.
Double-rod checklist
Because the 40 mm rod occupies both piston sides, push and pull forces are equal. At 0.5 MPa you get 15080 N, at 0.7 MPa it is 21111 N, and at the maximum operating pressure of 0.9 MPa the force reaches 27143 N. The theoretical force at 1.0 MPa is 3075 kgf.
Choose the SCD when you need identical force and speed in both directions, or when you require a rear rod extension for mounting sensors, stops, or secondary tooling. The through-rod also improves rod guidance and bearing load distribution compared to a single-rod cylinder, though it does not replace a fully guided actuator for high side loads.
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