The AirTAC Airtac SCD Standard Cylinder SCD80X100STC 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. Ø80mm bore, 100mm stroke, PT3/8 ports and adjustable end cushioning.
The SCD80X100STC is a double-acting, double-rod pneumatic cylinder that produces an identical 2268 N of thrust in both directions at 0.5 MPa, thanks to its through-rod design where the 25 mm rod passes through both end caps. This symmetric force output, combined with a 100 mm stroke and an adjustable air cushion of 28 mm, makes it ideal for applications requiring balanced motion and deceleration.
This specific model is factory-equipped with a built-in magnet (-S) for direct mounting of CMSG/DMSG sensors and a centre trunnion (TC) pivot mount, supplied with the TCM1 bracket (order code F-SC80TC). The trunnion allows the entire cylinder body to pivot, accommodating swinging loads without side-loading the rod bearings, while the rear rod extension is perfect for mounting a secondary tool or a stroke-adjustment stopper.
| Model | Airtac SCD Standard Cylinder SCD80X100STC |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 100 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT3/8 |
| 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, 28 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | 3175 N |
| Max (@1.0 MPa) | 463 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). |
|---|---|
| 80 | 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 rear rod extension allows a second tooling plate or gripper to be mounted, enabling a single cylinder to shuttle parts between two parallel conveyor lines with perfectly synchronized motion and equal force in each direction.
Delivering an equal 4082 N of thrust at 0.9 MPa, the double-rod design prevents force asymmetry in light assembly presses, ensuring even pressure distribution when joining components from either side of the cylinder.
With the built-in magnet and a CMSG sensor on the rear rod, you can confirm full retraction without occupying space on the primary tooling end. The TC mount lets the whole assembly pivot to follow a moving pickup point.
Choose the SCD80 bore when your application needs roughly 2268 N of balanced force at standard plant pressure. If you require more force, stepping up to the SCD100 bore provides 3681 N at the same 0.5 MPa. For tasks needing less force, the SCD63 bore delivers 1402 N. A double-rod cylinder is the correct choice over a single-rod SC series when you need to attach tooling or sensors to both ends of the piston rod, or when the inherent anti-rotation guidance of a through-rod is beneficial. If the load has a significant side force, a guided cylinder is required, as the dual rod bearings are not designed to support heavy transverse loads. This SCD80X100STC is a direct replacement for any AirTAC SCD80 cylinder of the same 100 mm stroke, PT port thread, centre trunnion mount, and magnetic piston configuration.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. The effective piston area is calculated by subtracting the 25 mm rod area from the 80 mm bore area. This results in 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at the maximum operating pressure of 0.9 MPa.
You would select an SCD model when you need a piston rod extending from both ends of the cylinder. This is essential for mounting tooling on both sides, using the rear rod as a stop or sensor flag, or when you require the improved bearing support and inherent anti-rotation guidance that a through-rod provides. The forces are also perfectly balanced, unlike a single-rod cylinder where the pull force is lower.
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