The AirTAC Airtac SCD Standard Cylinder SCD63X450 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø20mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø63mm bore, 450mm stroke, PT1/4 ports and adjustable end cushioning.
The SCD63X450 is a double-acting pneumatic cylinder with a through-rod design, providing 1402 N of thrust in both directions at 0.5 MPa. Its 20 mm diameter rod extends from both ends, making it ideal for applications where tooling must be mounted on either side or where equal force and speed are required for a 450 mm stroke.
With a 210 mm body length and 28 mm of adjustable air cushion at each end, this cylinder decelerates the piston smoothly, reducing end-of-stroke impact. At the maximum operating pressure of 0.9 MPa, it generates 2523 N of force, offering robust performance for transfer and positioning tasks.
| Model | Airtac SCD Standard Cylinder SCD63X450 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 450 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 28 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 | 1402 N | 1402 N |
| 0.7 MPa | 1962 N | 1962 N |
| Max (@1.0 MPa) | 286 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). |
|---|---|
| 63 | 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.
The equal 1402 N force in both directions makes this cylinder perfect for shuttling parts between two stations, ensuring consistent speed and power for the 450 mm travel regardless of the direction.
With a rod on both ends, the piston is inherently more resistant to rotation. Use the rear rod to mount a guide block or sensor flag, creating a stable, non-rotating pusher for assembly fixtures.
Mount a gripper on the front rod and a confirmation sensor on the rear rod. The 450 mm stroke provides ample reach for loading and unloading parts from a CNC machine or test stand.
Choose the SCD63X450 when your application demands identical push and pull forces for a 450 mm stroke. If you need more force, the SCD80 bore delivers 2268 N at 0.5 MPa, while the SCD50 provides a lighter 825 N. For a direct replacement, match the 63 mm bore, 450 mm stroke, PT port thread, and basic mounting style exactly.
For a stroke of this length, be mindful of the unsupported rod. While the double-rod design offers better guidance than a single rod, significant side loads can cause rod bending. If the load is not perfectly axial, consider adding an external guide rail or switching to a guided cylinder to protect the rod bearings and seals.
Double-rod checklist
The push and pull forces are identical due to the double-rod design. At 0.5 MPa, it outputs 1402 N. At 0.7 MPa, the force is 1962 N, and at the maximum operating pressure of 0.9 MPa, it reaches 2523 N. The theoretical force at 1.0 MPa is 286 kgf.
Choose the SCD63 when you need equal force and speed in both directions, or when you need to attach tooling, a stopper, or a sensor target to the rear rod. The through-rod also provides better side-load resistance than a single-rod cylinder, though it is not a substitute for a fully guided actuator under high side loads.
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