The AirTAC Airtac SCD Standard Cylinder SCD200X350 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø40mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø200mm bore, 350mm stroke, PT3/4 ports and adjustable end cushioning.
The AirTAC SCD200X350 is a double-acting, double-rod pneumatic cylinder engineered for applications demanding identical force and speed in both directions. With a 200 mm bore and a 40 mm through-rod extending from both end caps, it produces a balanced 15080 N of thrust in push and pull at 0.5 MPa, rising to 27143 N at the maximum operating pressure of 0.9 MPa. The body length A(SCD) is 362 mm, providing a robust platform for heavy-duty, symmetrical tooling.
This 350 mm stroke model uses a tie-rod construction with PT3/4 ports and an M36x2 knuckle thread on each rod end. An adjustable air cushion of 29 mm is built into both end caps to decelerate the piston smoothly, reducing end-of-stroke impact. The dual rod design offers inherent anti-rotation and allows a rear rod extension to carry a sensor flag, stopper bolt, or secondary tooling, making it a versatile workhorse for large transfer and pressing operations.
| Model | Airtac SCD Standard Cylinder SCD200X350 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø200 mm |
| Rod diameter | Ø40 mm (both ends) |
| Stroke | 350 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 33 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 | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | 21111 N |
| Max (@1.0 MPa) | 3075 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). |
|---|---|
| 200 | Bore size in mm. |
| ×350 | 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 push and pull force of 15080 N at 0.5 MPa makes the SCD200X350 ideal for heavy transfer shuttles that move a pallet or fixture between two stations with identical power in each direction.
With a rod protruding from both ends, one side can carry a press tool while the rear rod actuates an ejector mechanism or a limit switch cam, synchronizing two operations from a single cylinder stroke.
The dual 40 mm rods provide inherent anti-rotation, making this cylinder suitable for lifting and locating heavy tooling plates where maintaining a fixed angular orientation is critical without external guides.
Select the SCD200X350 when your application requires a substantial, equal force output in both directions and the mechanical advantage of a through-rod. If your force requirement is lower, stepping down to the 160 mm bore SCD160 series provides 9425 N at 0.5 MPa. For applications where the rear rod is not needed and a lower profile is desired, the single-rod SC200 series is a more compact alternative. This double-rod cylinder provides better guidance than a single-rod type but is not a substitute for a fully guided cylinder under significant side loads. For a 350 mm stroke, ensure the load is guided externally to prevent rod bending.
To replace an existing SCD200X350, match the 200 mm bore, 350 mm stroke, PT3/4 port thread, and the specific SCD mounting accessory if one is used. This basic model has no magnet; if your setup uses CMSG or DMSG sensors, select the -S magnet option. The SCD mounting system uses a subset of accessories, including FA front flange, LB foot mount, or TC centre trunnion, all of which must be ordered specifically for the SCD200 body.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. The effective piston area is calculated by subtracting the 40 mm rod area from the 200 mm bore area. This results in a force of 15080 N at 0.5 MPa, 21111 N at 0.7 MPa, and 27143 N at the maximum operating pressure of 0.9 MPa.
Choose the SCD200X350 when you need perfectly symmetrical force and speed in both directions, or when you need to mount tooling, a sensor flag, or a mechanical stop on the rear rod. The through-rod also provides better bearing support and inherent anti-rotation compared to a single-rod cylinder, which is beneficial for guiding a heavy load without adding external guides.
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