The AirTAC Airtac SCD Standard Cylinder SCD200X300S 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, 300mm stroke, PT3/4 ports and adjustable end cushioning.
The SCD200X300S is a heavy-duty double-rod pneumatic cylinder delivering identical force in both directions—15080 N at 0.5 MPa, rising to 27143 N at the maximum operating pressure of 0.9 MPa. With a 40 mm rod passing through both end caps, it provides equal push and pull thrust, making it ideal for large-scale tooling that requires symmetric actuation or a rear rod extension for mounting external flags and stops.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position sensing. Its 300 mm stroke is well within the 1500 mm standard maximum for the 200 mm bore, and the adjustable air cushion (33 mm) at each end decelerates the high-inertia piston smoothly. The body length A(SCD) is 362 mm, and the port is PT3/4.
| Model | Airtac SCD Standard Cylinder SCD200X300S |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø200 mm |
| Rod diameter | Ø40 mm (both ends) |
| Stroke | 300 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. |
| ×300 | 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 15080 N force in both directions moves large pallet or die transfer carts with symmetric acceleration and deceleration, while the rear rod can drive a secondary mechanism or counterbalance.
Operates closing dies or compression platens from both ends simultaneously, using the through rod to link upper and lower tooling for perfectly synchronized movement without complex linkages.
The built-in magnet lets CMSG/DMSG sensors clamp directly to the tie rods, providing reliable, adjustment-free end-of-stroke signals to the PLC for high-speed automated process lines.
Choose the SCD200 when your application needs symmetric thrust around 15080 N at 0.5 MPa. If your force requirement is lower, stepping down to the SCD160 bore reduces output to 9425 N at the same pressure, saving air consumption and physical space. For loads that need a single output shaft only, the standard SC single-rod series is a simpler and more compact alternative. Because the 300 mm stroke exposes a long unsupported rod section, evaluate side loads carefully—a through rod improves guidance but does not eliminate the need for an external linear guide or a guided cylinder if radial forces are present. For direct replacement, match the 200 mm bore, 300 mm stroke, PT3/4 port thread, basic mounting, and the -S magnet option to ensure sensor compatibility.
Double-rod checklist
Because the SCD is a double-rod cylinder, the piston area is identical on both sides. The effective force is 15080 N at 0.5 MPa, 21111 N at 0.7 MPa, and 27143 N at 0.9 MPa. The theoretical maximum at 1.0 MPa is 3075 kgf. Push and pull forces are always equal.
Use the SCD when you need equal force and speed in both directions, a rear rod extension to mount tooling or sensor flags, or improved resistance to rod rotation. The through rod provides better bearing support than a single-rod design, but for high side loads, a dedicated guided cylinder is still required.
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