The AirTAC Airtac SCD Standard Cylinder SCD80X280 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, 280mm stroke, PT3/8 ports and adjustable end cushioning.
The AirTAC SCD80X280 is a double-acting, double-rod pneumatic cylinder where the piston rod extends from both ends, providing identical push and pull force of 2268 N at 0.5 MPa. This symmetry is ideal for applications requiring balanced motion or tooling mounted on the rear rod, such as a sensor flag or secondary actuator. The 25 mm diameter rod runs through both caps, offering better guidance than a single-rod design.
With an 80 mm bore and a 280 mm stroke, this model uses a PT3/8 port and features an adjustable air cushion (28 mm length) to decelerate the piston smoothly at both ends of travel. The body length A(SCD) is 257 mm, making the overall retracted length longer than a comparable single-rod SC cylinder. The maximum operating pressure is 1.0 MPa, where the thrust reaches 4082 N in either direction.
| Model | Airtac SCD Standard Cylinder SCD80X280 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 280 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. |
| ×280 | 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 force in both directions makes the SCD80X280 perfect for shuttle tables that move a fixture back and forth, ensuring consistent acceleration and deceleration regardless of travel direction.
Use the rear rod extension to mount a sensor flag or cam for external limit switches. This keeps the sensing mechanism clear of the main tooling on the front rod, simplifying setup on a 280 mm stroke.
The twin-rod guidance provides inherent anti-rotation, suitable for pushing components onto a conveyor without adding an external guide, as long as the side load is minimal.
Select the SCD80X280 when you need equal force and speed in both directions for a mid-range stroke. If your application requires higher force, consider stepping up to the SCD100 bore, which provides 3681 N at 0.5 MPa. For lower force requirements, the SCD63 bore delivers 1402 N at the same pressure. This double-rod cylinder is not a substitute for a fully guided unit under significant side load; for those conditions, add an external guide rail.
For a stroke of 280 mm, ensure the load is guided to prevent excessive bending moment on the rod. This model is a direct replacement for another AirTAC SCD80X280 with matching PT ports and basic mounting. If you need position sensing, order the -S magnet version to clamp CMSG/DMSG sensors onto the tie-rod barrel. For a single-rod alternative, the SC80 series provides a different force profile with a higher push force.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it outputs 2268 N, at 0.7 MPa it outputs 3175 N, and at the maximum operating pressure of 0.9 MPa it delivers 4082 N in both directions.
Choose the SCD80X280 when you need equal force and speed for both extend and retract strokes, or when you require a rear rod end for mounting tooling, a stopper bolt, or a sensor flag. The single-rod SC80 provides a higher push force but a lower pull force, which is better for unidirectional work.
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