The AirTAC Airtac SCD Standard Cylinder SCD200X450 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, 450mm stroke, PT3/4 ports and adjustable end cushioning.
The SCD200X450 is a heavy-duty double-rod pneumatic cylinder engineered for applications demanding identical force and speed in both directions. With a 200 mm bore and a 40 mm through-rod, it generates a balanced 15080 N of thrust each way at 0.5 MPa, rising to 27143 N at the maximum operating pressure of 0.9 MPa. This symmetrical output eliminates the force asymmetry inherent in single-rod designs, making it ideal for large-scale tooling that must be driven from either end.
The 450 mm stroke is well within the 1500 mm maximum standard stroke for this bore class. Its tie-rod construction houses a 29 mm adjustable air cushion on each end cap to decelerate high-inertia loads smoothly. The rear rod extension provides a convenient mounting point for external stroke sensors, limit switches, or a secondary tool, while the dual-rod support improves guidance and resistance to rotation compared to a single-rod cylinder of equivalent size.
| Model | Airtac SCD Standard Cylinder SCD200X450 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø200 mm |
| Rod diameter | Ø40 mm (both ends) |
| Stroke | 450 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. |
| ×450 | 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.
Powers heavy transfer carts or shuttle tables that must move a load between two stations with equal speed and force in both directions, using the rear rod for a counterbalance or secondary actuator.
Operates large bending or straightening fixtures where tooling is mounted on both ends of the through-rod, applying symmetric 27 kN of force at 0.9 MPa to correct distortion in structural beams.
Provides a stable, anti-rotation lifting platform for heavy dies or molds. The dual-rod support and equal-area piston ensure smooth, controlled motion without tilting during vertical operation.
Select the SCD200X450 when your application requires a balanced, high-force linear output accessible from both ends of the cylinder. If the 15080 N force at 0.5 MPa exceeds your requirement, consider stepping down to the 125 mm bore SCD125 series, which provides 5734 N under the same conditions. For applications needing force in only one direction, a single-rod SC200 cylinder would be a more cost-effective and compact alternative. The long, unsupported 40 mm rod on this 450 mm stroke model requires careful management of side loads; if the load is not perfectly guided externally, a guided cylinder is necessary to prevent rod bending and premature seal wear. For a direct replacement, match the 200 mm bore, 450 mm stroke, PT port thread, basic mounting, and ensure the replacement is a genuine AirTAC SCD double-rod unit.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. The effective piston area is calculated by subtracting the 40 mm rod area from the 200 mm bore area. This results in 15080 N at 0.5 MPa, 21111 N at 0.7 MPa, and 27143 N at the maximum operating pressure of 0.9 MPa.
Choose the SCD200X450 when you need to mount tooling or sensors on both ends of the rod, or when your process requires perfectly equal speed and force in both directions. The through-rod also provides better guidance and inherent anti-rotation properties than a single-rod SC cylinder, making it suitable for applications where the load is not perfectly centered but a fully guided cylinder is not yet required.
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