The AirTAC Airtac SCD Standard Cylinder SCD63X500S 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, 500mm stroke, PT1/4 ports and adjustable end cushioning.
The SCD63X500S delivers perfectly symmetrical force in both directions, producing 1402 N of push and 1402 N of pull at 0.5 MPa, because the 20 mm rod passes through both end caps. This balanced output eliminates force differentials that can complicate tooling design on long-stroke applications.
At 500 mm of travel, this double-rod model provides a rear rod extension ideal for mounting a stroke confirmation flag or a secondary tool. The built-in magnet allows CMSG/DMSG/EMSG sensors to clamp directly onto the tie-rod barrel for non-contact position sensing, while the 28 mm air cushion at each end quietly decelerates the piston.
| Model | Airtac SCD Standard Cylinder SCD63X500S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 500 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. |
| ×500 | 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.
Shuttle tables where the identical push and pull force moves a fixture plate between two stations without speed variation.
The rear rod end carries a sensor flag or cam, allowing end-of-stroke confirmation on the back side of the machine frame.
Operates a pressing tool on the front and a stripping plate on the rear rod in a compact, synchronized assembly.
Choose the SCD63 when you need equal push and pull thrust around 1400 N at 0.5 MPa. If your load requires more force, the SCD80 bore steps up to 2268 N in both directions. For applications needing only a single working end, the single-rod SC63 is a simpler, more compact alternative. To replace an existing SCD63, match the 63 mm bore, 500 mm stroke, PT port thread, basic mounting, and the -S magnet option. On a 500 mm stroke, ensure the long unsupported rod is not subjected to side loads; if lateral forces are present, an external guide rail or a guided cylinder is the safer choice.
Double-rod checklist
Push and pull force are identical at 1402 N at 0.5 MPa, 1962 N at 0.7 MPa, and 2523 N at the 0.9 MPa maximum operating pressure. The 20 mm rod reduces the effective area equally on both sides.
Select the SCD63 when you need equal speed and force in both directions, or require a second rod end to mount tooling, a stopper bolt, or a position flag. The through-rod also provides better bearing support than a single rod, though it is not a substitute for a fully guided cylinder under side load.
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