Airtac SCD Standard Cylinder SCD80X80S
The AirTAC Airtac SCD Standard Cylinder SCD80X80S 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, 80mm stroke, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Rod (both ends)Ø25 mm
- Stroke80 mm
- Port sizePT3/8
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD80X80S
The SCD80X80S is a double-acting, double-rod pneumatic cylinder that provides an identical 2268 N of force in both the extend and retract strokes at 0.5 MPa, thanks to its through-rod design. With an 80 mm bore and a 25 mm rod protruding from both end caps, it ensures perfectly symmetrical motion, making it ideal for applications where the rear rod can carry a sensor flag or secondary tooling.
This 80 mm stroke model includes a built-in magnet (denoted by the -S suffix), allowing CMSG, DMSG, or EMSG sensors to be mounted directly on the tie-rod barrel for non-contact position sensing. The cylinder body length A is 257 mm, and it features an adjustable air cushion of 28 mm at each end to decelerate the piston smoothly, with PT3/8 ports as standard.
Airtac SCD Standard Cylinder SCD80X80S Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD80X80S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 80 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 SCD80X80S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | 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.
Where the Airtac SCD Standard Cylinder SCD80X80S Is Used
Two-Sided Actuation
The rod extending from both ends allows a single SCD80X80S to operate two mechanisms simultaneously, such as opening and closing a dual-gate system, with equal force and speed on each side.
Rear Position Sensing
With the built-in magnet, a sensor can be mounted on the rear end of the barrel to detect the retracted position using the rear rod's motion, simplifying wiring in compact machine layouts.
Non-Rotating Pusher
The dual-rod configuration provides inherent anti-rotation stability for a tooling plate mounted between the two rod ends, useful for light pushing or stamping tasks where rod twist must be prevented.
Is the Airtac SCD Standard Cylinder SCD80X80S the Right Cylinder?
Choose the SCD80 when you need balanced force in both directions; at 0.5 MPa, it outputs 2268 N, a significant step up from the 1402 N offered by the smaller SCD63. If your application only requires force from one side of the piston, a single-rod SC80 cylinder would be a simpler and more cost-effective choice. For direct replacement, match the 80 mm bore, 80 mm stroke, PT3/8 port thread, basic mounting, and the -S magnet option.
For strokes longer than 300 mm on this bore, be mindful of the unsupported rod length. The double-rod design offers better guidance than a single rod, but it is not a substitute for an external guide when side loads are present. In such cases, consider adding an external linear guide or switching to a guided cylinder.
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 SCD80X80S FAQ
The push and pull forces are identical because the rod passes through the entire cylinder. At 0.5 MPa, both forces are 2268 N. At the maximum operating pressure of 0.9 MPa, the force in each direction is 4082 N.
Choose an SCD when you need perfectly equal force and speed in both directions, or when you want to utilize the rear rod end for mounting a sensor flag, a mechanical stop, or secondary tooling. The through-rod also provides better support for the piston, reducing uneven bushing wear compared to a single-rod cylinder under the same conditions.
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