The AirTAC Airtac SCD Standard Cylinder SCD250X200 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø50mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø250mm bore, 200mm stroke, PT1" ports and adjustable end cushioning.
The SCD250X200 is a heavy-duty double-rod pneumatic cylinder engineered for applications demanding identical thrust in both directions. With a 250 mm bore and 50 mm through-rod, it generates a substantial 23562 N of force on both the extend and retract strokes when supplied with 0.5 MPa air pressure, scaling up to 42412 N at the maximum operating pressure of 0.9 MPa.
This 200 mm stroke model features a 1-inch PT port and an M42x2 rod thread on both ends, allowing for simultaneous tooling or sensor mounting. The tie-rod construction provides a robust body length of 435 mm, and the adjustable air cushion at each end, with a 40 mm cushion length, ensures smooth deceleration of high-inertia loads.
| Model | Airtac SCD Standard Cylinder SCD250X200 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Rod diameter | Ø50 mm (both ends) |
| Stroke | 200 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1" |
| Rod thread | M42×2 |
| 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, 40 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 | 23562 N | 23562 N |
| 0.7 MPa | 32987 N | 32987 N |
| Max (@1.0 MPa) | 4805 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). |
|---|---|
| 250 | Bore size in mm. |
| ×200 | 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.
Provides equal, high-force push and pull to shift heavy pallets or steel sheets between conveyor lines, using the rear rod for a synchronized return stop.
Delivers 42412 N of consistent force at 0.9 MPa for pressing bearings or straightening large structural parts, with the through-rod ensuring even load distribution.
Operates clamping arms on both ends of the cylinder simultaneously, using the M42x2 rear rod thread to drive a mirror-image clamping mechanism for large fabrications.
Select the SCD250X200 when your application requires balanced, high-force actuation from both sides of the piston. If the 23562 N force at 0.5 MPa is more than needed, stepping down to a 200 mm bore SCD model reduces the output to 15080 N. For applications where force is only needed in one direction, a single-rod SC series cylinder would be a more economical and compact choice. For a direct replacement, match the 250 mm bore, 200 mm stroke, PT port thread, and the specific SCD mounting accessory. For this 200 mm stroke, the dual-rod design provides better support than a single rod, but for significant side loads, an external guide rail is still recommended.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. The force is 23562 N at 0.5 MPa, 32987 N at 0.7 MPa, and reaches 42412 N at the maximum operating pressure of 0.9 MPa.
Choose the SCD when you need perfectly symmetrical force and speed in both directions, or when you need to mount a tool, stopper, or sensor flag on the rear rod. The through-rod also provides better guidance and anti-rotation than a single-rod cylinder, though it is not a replacement for an external guide under high side loads.
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