The AirTAC Airtac SCD Standard Cylinder SCD200X400S 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, 400mm stroke, PT3/4 ports and adjustable end cushioning.
The SCD200X400S is a heavy-duty double-rod pneumatic cylinder that provides exactly 15080 N of thrust in both directions at 0.5 MPa, making it ideal for large-scale tooling that requires balanced, reciprocal force. Its 40 mm through-rod extends from both ends, allowing you to mount tooling or limit switches on the rear side while the front does the primary work.
At 0.9 MPa, the output climbs to a formidable 27143 N each way, driven by a 200 mm bore piston inside a robust tie-rod body. This model includes a built-in magnet (-S suffix), so you can directly clamp CMSG, DMSG, or EMSG sensors onto the barrel for reliable, non-contact position sensing. The adjustable air cushion (33 mm) decelerates the massive piston smoothly, and the PT 3/4 ports supply the necessary flow.
| Model | Airtac SCD Standard Cylinder SCD200X400S |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø200 mm |
| Rod diameter | Ø40 mm (both ends) |
| Stroke | 400 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. |
| ×400 | 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 push-pull force at 0.5 MPa drives heavy shuttle tables smoothly in both directions, with the rear rod providing a perfect mounting point for a deceleration stop or external sensor flag.
Operate two identical clamping or forming tools simultaneously from one cylinder. The through-rod design ensures perfectly synchronized motion and equal force on both ends of the machine.
Use the rear rod to counterbalance or guide a large transfer arm. The 27143 N of force at 0.9 MPa provides the muscle to lift and shift heavy components in automotive or steel mill auxiliary equipment.
Choose the SCD200 when your application demands over 15000 N of balanced force in both directions. If you need slightly less thrust, the SCD160 delivers 9425 N at the same pressure, while the SCD250 steps up to 23562 N for the most demanding tasks. This double-rod design is the right choice when you need to attach tooling or a sensor flag to the rear rod; if you only need force from one end, a single-rod SC200 cylinder is a simpler, more compact alternative.
For a 400 mm stroke, ensure the load is guided externally, as the long unsupported 40 mm rods can experience bending under significant side loads. This model is a direct replacement for another AirTAC SCD200X400S with matching PT ports and magnet, but it will not interchange with ISO 15552 cylinders. If your load must not drift when air is removed, you will need an external pilot-operated check valve or a mechanical rod lock.
Double-rod checklist
Yes, absolutely. Because the piston rod passes through both end caps, the effective pressure area is identical on both sides of the piston. The force is 15080 N at 0.5 MPa, 21111 N at 0.7 MPa, and 27143 N at 0.9 MPa, regardless of direction.
Choose the SCD200 when you need to mount tooling, a sensor, or a mechanical stop on the rear rod, or when you require perfectly equal force and speed in both directions. The through-rod also provides better guidance than a single-rod cylinder, though it is not a substitute for an external guide under high side loads.
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