The AirTAC Airtac SCD Standard Cylinder SCD80X50FA 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, 50mm stroke, PT3/8 ports and adjustable end cushioning.
The SCD80X50FA is an 80 mm bore double-rod pneumatic cylinder delivering symmetrical thrust of 2268 N in both directions at 0.5 MPa, rising to 4082 N at the maximum 0.9 MPa operating pressure. Because the 25 mm rod passes through both end caps, the effective piston area is identical on the push and pull strokes, giving you perfectly balanced force and speed for short, two-sided actuation tasks.
This model comes with a front rectangular flange (FA) for rigid end-face mounting, making it simple to bolt directly onto a machine panel or bracket. The 50 mm stroke is standard for this bore, and the cylinder body has a retracted length of 257 mm (dimension A). Adjustable air cushioning on both ends decelerates the piston smoothly over the final 28 mm of travel, protecting end caps from impact at speeds up to 800 mm/s.
| Model | Airtac SCD Standard Cylinder SCD80X50FA |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 50 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. |
| ×50 | 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 lets you mount a tooling plate on each end, moving parts between two stations with identical push and pull force. The 50 mm stroke is perfect for compact pick-and-place shuttles.
Equal force in both directions makes the SCD80 ideal for light straightening fixtures or dual-sided clamping where uneven pressure would distort the workpiece.
Attach a sensor flag or cam to the rear rod extension to trigger external limit switches without interfering with the main tooling on the front rod, simplifying end-of-stroke detection.
Choose the SCD80 bore when your application needs around 2268 N of balanced force at standard plant pressure. If you can work with less thrust, stepping down to the SCD63 (1402 N at 0.5 MPa) saves space and air consumption; for heavier tooling, the SCD100 provides 3681 N at the same pressure. The FA front flange is ideal when the cylinder body must be fixed from the rod-end face, but if your load needs to pivot, consider the TC centre trunnion mount instead.
This double-rod design gives better rod guidance than a single-rod SC cylinder, but it is not a substitute for a proper guided cylinder under significant side loads. For direct replacement, match the 80 mm bore, 50 mm stroke, PT port thread, FA mounting accessory (F-SC80FA), and the absence of a magnet option exactly.
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 reaches 4082 N. The theoretical force at 1.0 MPa is 463 kgf.
Pick the SCD when you need equal force and speed in both directions, want to mount tooling or sensors on a rear rod extension, or require the improved bearing support and anti-rotation that a through-rod provides. If you only need a single working end and a higher push force from the full-bore area, the SC single-rod series is a better fit.
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