The AirTAC Airtac SCD Standard Cylinder SCD100X300STC 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, 300mm stroke, PT1/2 ports and adjustable end cushioning.
The SCD100X300STC is a double-acting, double-rod pneumatic cylinder that produces an identical 3681 N of force in both directions 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, 300 mm stroke unit includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and a centre trunnion (TC) mount with the TCM1 bracket, making it ideal for pivoting applications where the load needs to swing.
With a body length A(SCD) of 263 mm and an adjustable air cushion of 29 mm at each end, this cylinder decelerates the piston smoothly to reduce end-of-stroke impact. The symmetric rod design provides better bearing support than a single-rod cylinder, helping to manage the bending moment on the 300 mm stroke. At the maximum operating pressure of 0.9 MPa, the thrust reaches 6626 N, giving you substantial power for dual-sided tooling or transfer mechanisms.
| Model | Airtac SCD Standard Cylinder SCD100X300STC |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 300 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. |
| ×300 | 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 3681 N at 0.5 MPa makes this cylinder perfect for shuttle tables that move a fixture or part between two stations, ensuring consistent speed and power in both directions.
With the integrated TC centre trunnion mount, the SCD100X300STC can pivot freely as it extends and retracts, making it ideal for turnover devices or clamping arms that must swing into position.
The built-in magnet and exposed rear rod let you mount CMSG/DMSG sensors on the back of the cylinder to detect end-of-stroke position, keeping the front tooling area clear and simplifying cable routing.
Choose the SCD100 bore when your application needs roughly 3700 N of balanced force at standard plant pressure. If you can step down to an 80 mm bore, the SCD80 provides 2268 N at 0.5 MPa, saving space and air consumption. For applications that require force in only one direction, the single-rod SC series is a simpler, more cost-effective choice. Because this is a 300 mm stroke, be mindful of rod deflection under side load; for purely linear, guided motion, a guided cylinder or external linear rail is recommended over relying solely on the double-rod's improved guidance.
This SCD100X300STC is a direct replacement for another AirTAC SCD100 double-rod cylinder of the same 300 mm stroke, provided the port thread (PT), centre trunnion mounting (TC), and magnet option (-S) all match. The complete TC mount assembly is ordered under the code F-SC100TC and includes the necessary TCM1 bracket.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it outputs 3681 N, at 0.7 MPa it reaches 5153 N, and at the maximum operating pressure of 0.9 MPa it delivers 6626 N in both directions.
You choose an SCD when you need identical force and speed in both directions, or when you need to mount tooling, a mechanical stop, or a sensor flag on the rear rod. The through-rod design also provides better support for the piston rod, reducing bearing wear compared to a single-rod cylinder in applications with minor side forces.
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