The AirTAC Airtac SCD Standard Cylinder SCD32X400S 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, 400mm stroke, PT1/8 ports and adjustable end cushioning.
The SCD32X400S is a double-acting, double-rod pneumatic cylinder that outputs an identical 345 N of force in both directions at 0.5 MPa, thanks to its through-rod design where the 12 mm rod subtracts the same area from each piston face. With a 400 mm stroke and a built-in magnet for barrel-mounted sensors, it is well suited for two-sided tooling, transfer mechanisms, or applications where you need to monitor end-of-stroke from the rear.
This model features a 21 mm adjustable air cushion at each end to decelerate the piston smoothly, and its body length A(SCD) is 187 mm. The dual M10x1.25 rod ends provide a convenient mounting point on both sides for attaching workpieces, stoppers, or sensor flags, while the PT1/8 ports supply the compressed air.
| Model | Airtac SCD Standard Cylinder SCD32X400S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø32 mm |
| Rod diameter | Ø12 mm (both ends) |
| Stroke | 400 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. |
| ×400 | 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 cylinder to shuttle a workpiece from one station to the next, with tooling mounted on each rod end for a balanced push-pull transfer.
The built-in magnet lets you mount a CMSG or DMSG sensor on the rear barrel to confirm full retraction, which is especially useful when the front end is obscured by tooling.
The dual-rod support provides better resistance to rotation than a single-rod cylinder, making it a good choice for simple pressing or ejecting tasks where rod twist is a concern.
Step up to the 40 mm bore SCD series if your application requires more force, as it delivers 528 N at the same 0.5 MPa. If you only need to push from one side and pull force is less critical, a single-rod SC cylinder will be more compact and cost-effective. For this 400 mm stroke, be mindful of the unsupported rod length; if the load applies any side force, pair the cylinder with an external guide rail or switch to a guided cylinder to prevent rod bending.
As a direct replacement, match the 32 mm bore, 400 mm stroke, PT port thread, and the -S magnet option. This basic mount SCD32X400S is a drop-in fit for another AirTAC unit with the same specifications.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are equal. At 0.5 MPa it produces 345 N, at 0.7 MPa it is 483 N, and at the maximum operating pressure of 0.9 MPa it reaches 621 N in both directions.
Choose an SCD when you need identical force and speed in both directions, or when you need a rear rod extension for mounting a second tool, a stopper, or a sensor flag. The through-rod also provides better guidance and anti-rotation than a single-rod cylinder, though it is not a substitute for a fully guided actuator under high side loads.
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