The AirTAC Airtac SCD Standard Cylinder SCD100X100S 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, 100mm stroke, PT1/2 ports and adjustable end cushioning.
The SCD100X100S is a double-acting, double-rod pneumatic cylinder that delivers identical force in both directions—3681 N at 0.5 MPa—because the 25 mm rod passes through both end caps, subtracting the same area from each side. This 100 mm bore model includes a built-in magnet (the -S suffix), so you can mount CMSG, DMSG, or EMSG reed or solid-state sensors directly on the tie-rod barrel for clean, reliable end-of-stroke detection.
With a 100 mm stroke and a body length A(SCD) of 263 mm, this cylinder is compact enough for tight transfer stations yet powerful enough to push or pull over 6.6 kN at the maximum operating pressure of 0.9 MPa. The adjustable air cushion at each end (29 mm long) decelerates the piston smoothly, protecting the end caps during high-cycle operation. PT1/2 ports and an M20x1.5 rod thread are standard.
| Model | Airtac SCD Standard Cylinder SCD100X100S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 100 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. |
| ×100 | 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 lets you mount identical tooling on each side, shuttling parts between two conveyor lines with exactly the same speed and force in both directions.
The built-in magnet (-S) accepts barrel-mounted sensors to confirm full retract and extend positions, ideal for reject stations or part-present checks where PLC feedback is mandatory.
The dual-rod support naturally resists rotation, making this cylinder a good fit for simple press-fit or alignment fixtures where a single rod would twist under offset loading.
This 100 mm bore model suits applications needing around 3700 N of balanced force. If your load is lighter, stepping down to an SCD80 (2268 N at 0.5 MPa) saves air and space; for heavier demands, the SCD125 delivers 5734 N at the same pressure. Remember that a through-rod design gives better bearing support than a single-rod cylinder, but it is not a guided unit—if your 100 mm stroke sees any side load, add an external guide rail or switch to a guided cylinder.
To replace an existing SCD100X100S, match the 100 mm bore, 100 mm stroke, PT1/2 ports, basic mounting, and the -S magnet option. The sensor-ready barrel means you can swap the unit without re-engineering your electrical feedback setup.
Double-rod checklist
Because it is a double-rod cylinder, push and pull forces are equal. At 0.5 MPa it produces 3681 N, at 0.7 MPa it produces 5153 N, and at the maximum operating pressure of 0.9 MPa it produces 6626 N. The theoretical force at 1.0 MPa is 751 kgf.
Choose the SCD when you need identical force and speed in both directions, a rear rod end for mounting a sensor flag or secondary tooling, or better resistance to rod rotation. The through-rod design balances the bearing load, but it does not replace a guided cylinder if the application has significant side forces.
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