Airtac SCD Standard Cylinder SCD80X500S
The AirTAC Airtac SCD Standard Cylinder SCD80X500S 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, 500mm stroke, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Rod (both ends)Ø25 mm
- Stroke500 mm
- Port sizePT3/8
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD80X500S
The SCD80X500S is a double-acting, double-rod pneumatic cylinder that provides identical force and speed in both directions because the 25 mm rod passes through both end caps, subtracting the same area from each side. At a standard 0.5 MPa supply, this model outputs 2268 N of thrust whether extending or retracting, making motion profiles predictable and symmetric for two-sided tooling.
This 500 mm stroke variant includes a built-in magnet (denoted by the -S suffix), allowing CMSG, DMSG, or EMSG reed and solid-state sensors to be clamped directly onto the tie-rod barrel for non-contact end-of-stroke or mid-stroke position sensing. The body length A(SCD) is 257 mm, and the adjustable pneumatic cushion at each end (28 mm long) decelerates the piston smoothly, protecting end caps during high-cycle operation.
Airtac SCD Standard Cylinder SCD80X500S Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD80X500S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 500 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.
Theoretical Output Force (Ø80mm, double rod)
| 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.
Model Code: Airtac SCD Standard Cylinder SCD80X500S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | Bore size in mm. |
| ×500 | 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.
Where the Airtac SCD Standard Cylinder SCD80X500S Is Used
Two-Sided Transfer Shuttle
The through-rod design lets you mount identical grippers or vacuum cups on both ends, doubling throughput by picking and placing a part with each stroke direction without re-homing.
Symmetric Clamping & Straightening
Equal force in both directions makes the SCD80X500S perfect for press-fit or light straightening fixtures where the push and pull strokes must apply the same 2268 N clamping load.
Rear-Mounted Stroke Sensing
The built-in magnet works with barrel-mounted sensors on either side, and the rear rod provides a convenient flag surface for an external proximity sensor to confirm full retraction.
Is the Airtac SCD Standard Cylinder SCD80X500S the Right Cylinder?
Choose the SCD80 when you need balanced push-pull force around the 2268 N mark at 0.5 MPa. If your application requires more thrust, step up to the SCD100 bore, which provides 3681 N each way at the same pressure; for a lighter, more compact installation, the SCD63 delivers 1402 N. Because the rod extends from both ends, this cylinder is ideal for tasks where you need to mount a tool or sensor flag on the rear rod, but it is not a replacement for a guided cylinder if the 500 mm stroke exposes the rods to significant side loads—consider adding an external linear guide.
For a drop-in replacement, match the 80 mm bore, 500 mm stroke, PT port thread, basic mounting style, and the -S magnet option. The SCD double-rod cylinder is not dimensionally interchangeable with ISO 15552 single-rod cylinders. At this stroke length, ensure the long unsupported rod is not subjected to bending forces; if side loads are unavoidable, an external guide rail or a guided cylinder assembly is the safer choice.
Double-rod checklist
- ✓ Need equal force / speed both directions?
- ✓ Rear rod for tooling, stopper or sensor flag?
- ✓ Better rod guidance / anti-rotation?
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Keep BOTH rod ends clear of side load and interference.
- check Adjust end cushion screws for smooth stops.
- check Use SCD mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCD Standard Cylinder SCD80X500S FAQ
Because it is a double-rod cylinder, the push and pull forces are equal. 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.
Pick the SCD when you need identical force and speed in both directions, or when you need to attach tooling, a mechanical stop, or a sensor target to the rear rod. The through-rod also provides better guidance than a single-rod cylinder, though it is not a substitute for an external guide under heavy side loads.
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