The AirTAC Airtac SCD Standard Cylinder SCD32X125S is a genuine double-acting DOUBLE-ROD air cylinder: the Ø12mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø32mm bore, 125mm stroke, PT1/8 ports and adjustable end cushioning.
The SCD32X125S is a compact double-rod pneumatic cylinder delivering an identical 345 N of force in both push and pull directions at 0.5 MPa, thanks to its through-rod design that equalizes the effective piston area. With a 12 mm rod extending from both ends and a 21 mm adjustable air cushion, it provides balanced deceleration and symmetric loading for light-duty dual-sided tasks.
This 125 mm stroke model includes a built-in magnet (-S suffix), allowing you to clamp CMSG, DMSG, or EMSG reed or solid-state sensors directly onto the tie-rod barrel for reliable end-of-stroke or mid-stroke position feedback. Its PT1/8 ports and M10x1.25 rod threads make it a straightforward drop-in for fixture-based automation requiring equal bidirectional thrust.
| Model | Airtac SCD Standard Cylinder SCD32X125S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø32 mm |
| Rod diameter | Ø12 mm (both ends) |
| Stroke | 125 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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, 21 mm |
| Max stroke | Up to 1000 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 | 346 N | 346 N |
| 0.7 MPa | 484 N | 484 N |
| Max (@1.0 MPa) | 70 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). |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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 caps lets you push a workpiece into a fixture with the front rod while the rear rod simultaneously retracts a stop pin, synchronizing two actions with one cylinder.
With the built-in magnet, a DMSG sensor on the rear end cap detects the piston's position without interfering with the primary tooling on the front rod, keeping the sensing setup clean and protected.
The dual-rod support provides better resistance to rod rotation than a single-rod cylinder, making it suitable for light pressing or alignment tasks where you need to keep a tool oriented without adding an external guide.
Choose the SCD32 when your application needs equal force in both directions within a compact envelope; at 0.5 MPa it provides 345 N each way. If you need more thrust, step up to the SCD40, which offers 528 N at the same pressure. This double-rod unit is ideal when you need to mount tooling or a sensor flag on the rear rod, but remember that a through-rod improves guidance—it does not replace a properly sized external guide or a guided cylinder if your load applies significant side force.
For a direct replacement, match the 32 mm bore, 125 mm stroke, PT1/8 port thread, basic mounting style, and the integrated magnet. If your current cylinder is a single-rod SC type and you need the rear rod extension for dual-sided actuation, this SCD is the correct upgrade path.
Double-rod checklist
Because the piston rod passes through both end caps, the effective pressure area is identical on both sides. The force is 345 N at 0.5 MPa, 483 N at 0.7 MPa, and 621 N at the maximum operating pressure of 0.9 MPa. The theoretical output at 1.0 MPa is 70 kgf.
Pick the SCD when you need a rear rod extension for mounting a sensor flag, a mechanical stop, or secondary tooling. It also provides equal force and speed in both directions and better rod-bearing support than a single-rod cylinder, which helps reduce rod deflection in applications with light, symmetric loading.
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