The AirTAC Airtac SCD Standard Cylinder SCD200X250 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, 250mm stroke, PT3/4 ports and adjustable end cushioning.
The SCD200X250 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. With a substantial 40 mm diameter rod extending from both ends, this model provides superior guidance and symmetric loading, making it ideal for large-scale tooling that requires a rear connection point for a stopper or sensor flag.
At 0.9 MPa, the thrust reaches a powerful 27143 N each way, controlled by adjustable air cushioning over a 33 mm stroke-end distance. The retracted body length (A dimension) is 362 mm, and the PT3/4 ports supply the high flow needed for the 200 mm bore. This genuine AirTAC cylinder is built for demanding, balanced-force applications.
| Model | Airtac SCD Standard Cylinder SCD200X250 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø200 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, 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. |
| ×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.
Operates tooling on both ends of the cylinder simultaneously, such as dual clamps or opposing press plates, with perfectly equal force and speed in each direction.
Drives a heavy transfer mechanism back and forth with 15080 N of force, using the rear rod to mount a counterbalance or a secondary limit switch for end-of-stroke detection.
The dual-rod design inherently resists rotation, making it a strong choice for pushing large, off-center loads without requiring additional external anti-rotation guides.
For applications needing more force, the SCD250X250 steps up to 23562 N at 0.5 MPa. If your task only requires force in one direction, a single-rod SC200X250 cylinder provides a higher push force of 18840 N at the same pressure, as the full bore area is used. For direct replacement, match the 200 mm bore, 250 mm stroke, PT3/4 port thread, and any SCD-specific mounting accessory like the F-SC200TC centre trunnion. A stroke of 250 mm on this large bore is stable, but for longer unsupported strokes, consider an external guide to prevent rod bending under side loads.
Double-rod checklist
The push and pull forces are identical. At 0.5 MPa, the output is 15080 N. At the maximum operating pressure of 0.9 MPa, the force is 27143 N in both directions.
Choose the SCD200 when you need equal force and speed in both directions, a rear rod end for mounting sensors or additional tooling, and better inherent rod guidance. The single-rod SC200 provides a higher push force (18840 N at 0.5 MPa) but a lower pull force, making it better for unidirectional work.
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