The AirTAC Airtac SCD Standard Cylinder SCD200X25S 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, 25mm stroke, PT3/4 ports and adjustable end cushioning.
The SCD200X25S is a double-acting, double-rod pneumatic cylinder where the Ø40 mm piston rod extends from both ends, giving perfectly balanced 15080 N of force in each direction at 0.5 MPa. This short 25 mm stroke variant is ideal for compact clamping, ejecting, or positioning tasks where the rear rod can carry a sensor flag or secondary tooling.
With a body length A of 362 mm and a 33 mm adjustable air cushion, this cylinder decelerates the piston smoothly at both ends of travel. The built-in magnet (denoted by the -S suffix) allows direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for reliable, non-contact end-of-stroke detection without external brackets.
| Model | Airtac SCD Standard Cylinder SCD200X25S |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø200 mm |
| Rod diameter | Ø40 mm (both ends) |
| Stroke | 25 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. |
| ×25 | 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/pull force of 15080 N at 0.5 MPa makes this cylinder perfect for dual-sided clamping fixtures where both jaws must apply identical pressure simultaneously.
With the integrated magnet and a 25 mm stroke, it serves as a compact part ejector where CMSG sensors confirm retraction before the next cycle, keeping the machine rhythm fast and safe.
The through-rod design provides better bearing support than a single-rod cylinder, making it suitable for short linear guides or alignment pins that benefit from support at both ends.
For applications needing more force, the SCD250X25 steps up to a 50 mm rod and 23562 N at 0.5 MPa. If your task only requires actuation from one side, a single-rod SC200 cylinder provides a higher push force (full bore area) but unequal pull. When replacing an existing SCD200, match the bore, 25 mm stroke, PT port thread, basic mounting, and the -S magnet option exactly to guarantee dimensional and performance interchangeability.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it outputs 15080 N, at 0.7 MPa it is 21111 N, and at the maximum operating pressure of 0.9 MPa it reaches 27143 N in both directions.
Choose the SCD200 when you need the same force and speed extending and retracting, or when you want to use the rear rod extension for mounting a sensor flag, a mechanical stop, or secondary tooling. The through-rod also improves rod bearing support, though it is not a replacement for an externally guided cylinder under heavy side loads.
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