Airtac SCD Standard Cylinder SCD80X25
The AirTAC Airtac SCD Standard Cylinder SCD80X25 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, 25mm stroke, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Rod (both ends)Ø25 mm
- Stroke25 mm
- Port sizePT3/8
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD80X25
The SCD80X25 is a double-acting pneumatic cylinder with a continuous piston rod extending from both ends, delivering perfectly balanced 2268 N of force in each direction at 0.5 MPa. Its 25 mm stroke and 25 mm diameter through-rod make it ideal for short-throw, two-sided tasks like clamping both sides of a fixture or actuating a diverter gate where space is tight.
This 80 mm bore tie-rod cylinder features a 28 mm adjustable air cushion at each end to decelerate the piston smoothly, and PT3/8 ports for straightforward pneumatic connection. The body length A(SCD) is 257 mm, providing a compact envelope for a double-rod unit, and it operates reliably on filtered air from 0.15 to 1.0 MPa.
Airtac SCD Standard Cylinder SCD80X25 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD80X25 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 25 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 SCD80X25
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | Bore size in mm. |
| ×25 | 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 SCD80X25 Is Used
Dual-Sided Clamping
The SCD80X25 applies equal clamping pressure from both rod ends simultaneously, securing a workpiece on two opposite faces in a welding or assembly jig without unbalanced forces.
Short-Throw Diverter Gate
With a 25 mm stroke and a rear rod that can carry a counterbalance or sensor flag, this cylinder precisely shifts a small diverter chute in packaging or sorting lines, providing confirmation of position from the back end.
Symmetric Pusher for Small Parts
The equal force in both directions makes the SCD80X25 a reliable actuator for pushing a component into a nest and then retracting with the same controlled motion, useful in automated pick-and-place cells.
Is the Airtac SCD Standard Cylinder SCD80X25 the Right Cylinder?
Choose the SCD80X25 when you need identical push and pull thrust from both rod ends in a very short stroke. If your force requirement is lower, the SCD63 bore offers 1402 N at 0.5 MPa; for heavier tooling, the SCD100 bore steps up to 3681 N. A single-rod SC cylinder is the better pick if you only need force from one side, as it provides a higher push force for the same bore.
For direct replacement, match an existing SCD cylinder on all five points: 80 mm bore, 25 mm stroke, PT port thread, basic mounting, and no magnet. If you later need position sensing, order the -S magnet version and add a CMSG or DMSG sensor.
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 SCD80X25 FAQ
Because the rod passes through both ends of the cylinder, the effective piston area is identical for both directions. The SCD80X25 produces 2268 N of force each way at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at the maximum operating pressure of 0.9 MPa.
Select the SCD when you need to mount tooling or a sensor target on the rear rod, require perfectly equal speed and force in both directions, or want the improved bearing support of a through-rod design. The single-rod SC80X25 provides a higher push force (full bore area) but has unequal pull force and no rear rod extension.
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