The AirTAC Airtac SCD Standard Cylinder SCD63X75 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 SCD63X75 is a double-acting pneumatic cylinder with a through-rod design, giving you identical push and pull force — 1402 N at 0.5 MPa — in both directions. Its 20 mm diameter rod extends from both end caps, making it ideal for short-stroke tasks where you need to mount tooling or a sensor flag on the rear rod.
With a 75 mm stroke, this 63 mm bore cylinder handles compact two-sided actuation without the force imbalance of a single-rod type. The adjustable air cushion (28 mm length) decelerates the piston smoothly at each end, and the PT1/4 ports keep plumbing simple. Body length A(SCD) is 210 mm, giving you a clear footprint for machine layout.
| Model | Airtac SCD Standard Cylinder SCD63X75 |
|---|---|
| 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 75 mm stroke and equal 1402 N force in both directions make the SCD63X75 perfect for a compact shuttle table, pushing a workpiece from one side to the other with a tool mounted on each rod end.
With a rod on both ends, this cylinder offers better resistance to rod rotation than a single-rod type. Use it to push components into a fixture where even slight twisting is unacceptable.
The rear rod extension provides a clean, accessible point to mount a sensor flag or a secondary cam. This keeps your position sensors away from the main tooling area, simplifying maintenance.
Choose the SCD63X75 when your application needs equal thrust in both directions over a short 75 mm travel. If you require more force, step up to the SCD80 bore, which provides 2268 N at 0.5 MPa; for a lighter, more compact solution, the SCD50 delivers 825 N. This double-rod cylinder is the right pick when you need a rear rod extension, but remember it is not a guided cylinder — for significant side loads, add an external guide rail.
For a direct replacement, match the 63 mm bore, 75 mm stroke, PT port thread, and basic mounting. If your existing unit uses a magnet for sensors, order the -S variant. The SCD series is a tie-rod cylinder, so dimensional interchangeability is limited to another AirTAC SCD of the same configuration.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it produces 1402 N, at 0.7 MPa it's 1962 N, and at the maximum operating pressure of 0.9 MPa, the force is 2523 N in both directions.
Pick the SCD when you need a rear rod to mount tooling, a stopper, or a sensor flag, or when the application demands perfectly equal force and speed in both directions. The double-rod design also provides better guidance for the piston, reducing rod deflection compared to a single-rod cylinder in a short-stroke application like this.
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