The AirTAC Airtac SCD Standard Cylinder SCD100X250S is a genuine double-acting DOUBLE-ROD air cylinder: the Ø25mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø100mm bore, 250mm stroke, PT1/2 ports and adjustable end cushioning.
The SCD100X250S is a double-acting pneumatic cylinder with a through-rod design, meaning the 25 mm piston rod extends from both ends of the body. This configuration delivers identical push and pull force in both directions—3681 N at 0.5 MPa—because the rod area is subtracted from both sides of the piston. The built-in magnet (suffix -S) allows CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for non-contact position sensing, a clean solution for stroke-end confirmation.
With a 250 mm stroke and a body length A of 263 mm, this cylinder is well-suited for applications needing symmetric actuation from both ends, such as mounting a tool on the front rod and a confirmation flag or secondary stop on the rear. The PT1/2 ports and adjustable air cushion (29 mm) at each end help decelerate the piston smoothly. Operating pressure ranges from 0.15 to 1.0 MPa, and at 0.9 MPa the cylinder pushes and pulls with 6626 N.
| Model | Airtac SCD Standard Cylinder SCD100X250S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 250 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 29 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | 5154 N |
| Max (@1.0 MPa) | 751 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). |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 rod extending from both ends allows a single cylinder to push a pallet into position and then retract a stop pin on the opposite side, synchronizing two actions with one actuator.
With a tooling plate mounted across both rod ends, the SCD100X250S provides inherent anti-rotation for pushing wide or off-centre loads without a separate guide rod.
The built-in magnet on the SCD100X250S lets you mount CMSG/DMSG sensors on the barrel, while the rear rod end carries a mechanical flag for a redundant hard-limit switch.
The SCD100X250S is a strong mid-to-large bore double-rod actuator. If your application needs more force, stepping up to the SCD125 bore provides 5734 N at 0.5 MPa. For less force, the SCD80 delivers 2268 N at the same pressure. Choose this double-rod model when you need equal force and speed in both directions, or when the rear rod is required for a secondary function. If you only need force from one end, the single-rod SC100 series is a simpler, more compact alternative. For applications with significant side loads on the 250 mm stroke, an external guide rail or a dedicated guided cylinder is necessary—the dual-rod design improves guidance over a single rod but is not a substitute for a true linear guide. This SCD100X250S is a direct dimensional replacement only for another AirTAC SCD100 of the same stroke, port thread, and magnet option.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are equal. At 0.5 MPa it outputs 3681 N, at 0.7 MPa it is 5153 N, and at the maximum operating pressure of 0.9 MPa it reaches 6626 N in both directions.
Choose the SCD when you need identical force and speed extending and retracting, or when you need to use the rear rod end for mounting a sensor flag, a secondary tool, or a mechanical stop. The through-rod also provides better bearing support and resistance to rotation than a single-rod cylinder.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.