The AirTAC Airtac SCD Standard Cylinder SCD200X50 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, 50mm stroke, PT3/4 ports and adjustable end cushioning.
The SCD200X50 is a large-bore double-rod pneumatic cylinder that outputs an identical 15080 N of thrust in both extend and retract directions at 0.5 MPa, rising to 27143 N at the maximum operating pressure of 0.9 MPa. With a 50 mm stroke and a substantial 40 mm diameter rod passing through both end caps, it provides a rigid, symmetric actuation platform where the rear rod extension can carry a second tool, a limit-switch dog, or a counterbalance mass.
This genuine AirTAC tie-rod cylinder has a body length A(SCD) of 362 mm and uses PT3/4 ports. The adjustable pneumatic cushion at each end, with a 33 mm cushion length, decelerates the piston smoothly, making it suitable for moving heavy fixtures where equal speed and force in both directions are required.
| Model | Airtac SCD Standard Cylinder SCD200X50 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø200 mm |
| Rod diameter | Ø40 mm (both ends) |
| Stroke | 50 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. |
| ×50 | 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.
Applies equal 15 kN force in both directions for pressing, clamping, or straightening operations where the work must be engaged from two sides simultaneously.
Drives a heavy transfer shuttle between two stations with identical acceleration and deceleration profiles, using the rear rod to mount a secondary position sensor flag.
Operates tooling on both ends of the cylinder, such as a front forming die and a rear ejector pin, using the through-rod design to synchronize motion without complex linkages.
For applications needing more force, this is the largest standard SCD bore available before moving to the 250 mm bore, which provides 23562 N at 0.5 MPa. If your task only requires force in one direction, a single-rod SC200 cylinder would be a more compact and cost-effective choice, as it provides a higher push force on the full-bore side. When replacing an existing unit, match the 200 mm bore, 50 mm stroke, PT3/4 port thread, and ensure the mounting accessory (if any) is from the SCD subset: Basic, FA, LB, or TC.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are equal. At 0.5 MPa it produces 15080 N, at 0.7 MPa it produces 21111 N, and at the maximum operating pressure of 0.9 MPa it produces 27143 N in both directions.
Choose the SCD when you need identical force and speed in both directions, or when you need to mount tooling, stops, or sensors on the rear rod. The through-rod design also provides better guidance and resistance to side-loading than a single-rod cylinder of the same bore, though it is not a substitute for a fully guided cylinder under high side loads.
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