The AirTAC Airtac SCD Standard Cylinder SCD80X350TC 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, 350mm stroke, PT3/8 ports and adjustable end cushioning.
The SCD80X350TC is a double-acting, double-rod pneumatic cylinder that outputs exactly 2268 N of force in both directions at 0.5 MPa, because the 25 mm rod passes through both end caps and subtracts the same area from each side. This symmetry makes it ideal for applications where a tool or sensor flag must be mounted on the rear rod, or where the load requires balanced thrust and return speed.
At 350 mm of stroke, the through-rod design provides better bearing support than a single-rod cylinder of the same length, helping to resist deflection when the rod is extended. The TC suffix denotes the centre trunnion mounting style, supplied with the TCM1 bracket (order as F-SC80TC), which lets the entire cylinder pivot to follow an arcing load path. Its adjustable air cushion decelerates the piston over the final 28 mm of travel, and the PT3/8 ports supply ample flow for speeds up to 800 mm/s.
| Model | Airtac SCD Standard Cylinder SCD80X350TC |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 350 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. |
| ×350 | 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 2268 N push-pull force moves a shuttle table left and right with identical acceleration and deceleration profiles, simplifying pneumatic circuit design and tuning.
The protruding rear rod provides a convenient mounting point for a sensor flag or cam, allowing end-of-stroke detection without attaching anything to the front tooling.
With a rod on both ends, this cylinder can perform work in two stations simultaneously—pushing a component into a fixture on one side while ejecting a finished part on the other.
Step up to the SCD100 bore if your application demands more than 2268 N at 0.5 MPa—the 100 mm bore provides 3681 N. Conversely, if 1402 N is sufficient, the SCD63 saves space and weight. This double-rod unit is the right choice when you need equal force and speed in both directions, or a rear rod extension for mounting external stops or sensors; if you only need push force from one side, the single-rod SC series is a simpler, lower-cost alternative.
At a 350 mm stroke, consider the unsupported rod length when fully extended. While the through-rod adds guidance, significant side loads still demand an external guide rail or a dedicated guided cylinder. For direct replacement, match the 80 mm bore, 350 mm stroke, PT port thread, TC centre-trunnion mounting, and the absence of a magnet—this SCD80X350TC is a form-fit-and-function swap for an identical AirTAC model.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it produces 2268 N, at 0.7 MPa it produces 3175 N, and at the maximum operating pressure of 0.9 MPa it delivers 4082 N in both directions.
Choose the SCD when you need perfectly equal force and speed in both directions, or when you require a rear rod extension for mounting tooling, stops, or sensors. The through-rod also provides better guidance and anti-rotation than a single-rod design, though it is not a substitute for an external guide under heavy side loads.
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