The AirTAC Airtac SCD Standard Cylinder SCD100X80S 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, 80mm stroke, PT1/2 ports and adjustable end cushioning.
The SCD100X80S is a double-acting, double-rod pneumatic cylinder delivering identical push and pull thrust in both directions, calculated at 3681 N at 0.5 MPa. Because the 25 mm rod passes through both end caps, the effective piston area is the same on each side, making this actuator ideal for applications where balanced force and speed are critical. The built-in magnet allows direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position feedback.
With an 80 mm stroke and a body length A(SCD) of 263 mm, this cylinder provides a compact yet powerful linear motion solution. The adjustable air cushion at each end decelerates the piston smoothly over 29 mm, reducing end-of-stroke impact. Its PT1/2 ports and M20x1.5 rod threads are standard, and the through-rod design offers better bearing support than a single-rod cylinder of the same size, helping to manage light off-axis loads without an external guide.
| Model | Airtac SCD Standard Cylinder SCD100X80S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 80 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. |
| ×80 | 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 through-rod design allows a tool or fixture to be mounted on both ends, enabling a single cylinder to perform work in two locations simultaneously with perfectly synchronized motion.
With the built-in magnet, a sensor can be mounted on the rear barrel to detect the piston's position via the rear rod, a common setup when the front end is inaccessible or obscured by tooling.
The equal push and pull force of 3681 N at 0.5 MPa makes this cylinder suitable for a dual-sided reject station where a product can be pushed off a conveyor from either direction with identical force.
Choose the SCD100 bore when your application requires roughly 3700 N of balanced force at standard plant pressure. If your load is lighter, stepping down to the SCD80 bore reduces force to 2268 N at 0.5 MPa, saving energy and physical space. For heavier demands, the SCD125 bore provides 5734 N. This double-rod design is the correct pick when you need a rear rod extension for mounting a limit switch dog, a secondary tool, or a manual adjustment knob. If you only require force from one end, the single-rod SC series is a more economical choice. For a direct replacement, match the 100 mm bore, 80 mm stroke, PT port thread, basic mounting, and the -S magnet option.
Double-rod checklist
The force is identical in both directions. At 0.5 MPa it is 3681 N, at 0.7 MPa it is 5153 N, and at the maximum operating pressure of 0.9 MPa it reaches 6626 N. This is because the 25 mm rod area is subtracted from the bore area on both sides of the piston.
Choose the SCD when you need the piston rod to extend from both ends. This is essential for mounting sensors or tooling on the rear, achieving identical push/pull force and speed, or gaining the extra rod guidance that helps resist rotation and side-load better than a single-rod cylinder.
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