
The AirTAC Airtac SCD Standard Cylinder SCD63X75S 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, 75mm stroke, PT1/4 ports and adjustable end cushioning.
The SCD63X75S delivers identical push and pull force of 1402 N at 0.5 MPa, thanks to its double-rod design where the 20 mm rod passes through both end caps. This symmetry is ideal for tooling that attaches to both ends of the piston rod, such as a rear-mounted sensor flag or a secondary operation linkage, ensuring balanced bearing loads and consistent speed in both directions.
Equipped with a built-in magnet (-S), this 63 mm bore cylinder accepts CMSG, DMSG, or EMSG sensors directly on its tie-rod barrel for reliable end-of-stroke detection. The 75 mm stroke is a standard length, cushioned by 28 mm of adjustable pneumatic deceleration at each end to manage inertial loads smoothly without shock.
| Model | Airtac SCD Standard Cylinder SCD63X75S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 75 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. |
| ×75 | 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 force and speed in both directions make this cylinder perfect for a back-and-forth shuttle table, providing symmetric thrust of 2523 N at 0.9 MPa for consistent transfer timing.
With the integrated magnet, mount CMSG/DMSG sensors to precisely detect the piston's position at both ends of the 75 mm stroke, enabling closed-loop control for a two-sided staging or stop-pin mechanism.
The through-rod provides inherent anti-rotation, while the rear rod extension can carry a sensor flag or a secondary tool, making it suitable for a light-duty pressing or labeling operation.
For a step up in force, the SCD80 bore provides 2268 N at the same 0.5 MPa pressure. If your application only requires actuation from one end, a single-rod SC63 series cylinder is a simpler, more cost-effective choice. For significant side loads, do not rely solely on the dual-rod bearing support; a dedicated guided cylinder or external linear guide is necessary to prevent rod bending.
This model is a direct replacement for another AirTAC SCD63X75S with a PT port, basic mount, and magnetic piston. Ensure the replacement matches the 63 mm bore, 75 mm stroke, PT thread, and the -S magnet option to guarantee identical fit and sensor compatibility.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. The force is 1402 N at 0.5 MPa, 1962 N at 0.7 MPa, and 2523 N at the maximum operating pressure of 0.9 MPa.
Choose an SCD when you need to mount a tool or sensor on both ends of the rod, require perfectly equal force and speed in both directions, or want better rod guidance and anti-rotation than a single-rod cylinder provides. The rear rod extension is a key feature for dual-sided actuation.
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