The AirTAC Airtac SCD Standard Cylinder SCD63X80S 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, 80mm stroke, PT1/4 ports and adjustable end cushioning.
The SCD63X80S is a double-acting, double-rod pneumatic cylinder delivering identical force in both directions—1402 N at 0.5 MPa—thanks to its 20 mm rod passing through both end caps. This 80 mm stroke unit includes a built-in magnet, allowing direct mounting of CMSG/DMSG/EMSG sensors on the tie-rod barrel for reliable end-of-stroke detection without external flags.
With a body length A(SCD) of 210 mm and an adjustable air cushion of 28 mm at each end, the SCD63X80S decelerates the piston smoothly, reducing impact noise. The through-rod design provides better guidance than a single-rod cylinder and is ideal for tasks where a rear rod extension can carry a secondary tool or a sensor cam.
| Model | Airtac SCD Standard Cylinder SCD63X80S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 80 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. |
| ×80 | 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 rod extending from both ends allows a single SCD63X80S to operate two mechanisms in a synchronized push-pull sequence, such as a diverter gate and its counterbalance.
With the built-in magnet, mount a DMSG sensor on the rear end of the cylinder to confirm retraction. This keeps the front tooling area clear while providing a clean signal for the PLC.
The dual-rod support offers inherent anti-rotation for light pushing and ejecting tasks. Use the rear rod as a guide to keep a pusher plate aligned without a separate external rail.
Choose the SCD63 bore when your application needs about 1400 N of balanced push-pull force at standard plant pressure. If you need roughly 825 N, step down to the SCD50; for 2268 N, move up to the SCD80. This double-rod unit is the right choice when you require equal speed and force in both directions or need to mount tooling on the rear rod. If your task only needs force in one direction, a single-rod SC series cylinder is a simpler, more cost-effective alternative. For direct replacement, match the 63 mm bore, 80 mm stroke, PT port thread, basic mounting, and the -S magnet option.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are equal. At 0.5 MPa it outputs 1402 N, at 0.7 MPa it delivers 1962 N, and at the maximum operating pressure of 0.9 MPa it reaches 2523 N in both directions.
Choose the SCD when you need perfectly symmetrical force and speed for both extend and retract strokes, or when you need to attach tooling, a stopper, or a sensor flag to the rear rod. The through-rod also provides better bearing support than a single-rod design, helping to manage light side loads.
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