Airtac SCD Standard Cylinder SCD160X25
The AirTAC Airtac SCD Standard Cylinder SCD160X25 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø40mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø160mm bore, 25mm stroke, PT3/4 ports and adjustable end cushioning.
- BoreØ160 mm
- Rod (both ends)Ø40 mm
- Stroke25 mm
- Port sizePT3/4
- Rod configDouble rod (through)
- CushionAdjustable, 29 mm
About the Airtac SCD Standard Cylinder SCD160X25
The SCD160X25 is a double-acting, double-rod pneumatic cylinder built on a robust tie-rod design, providing identical thrust in both directions. At 0.5 MPa, this 160 mm bore unit generates 9425 N of force whether extending or retracting, thanks to its through-rod construction that subtracts the 40 mm rod area from both piston faces equally.
With a short 25 mm stroke and a body length A of 352 mm, it is ideal for compact dual-sided clamping or ejection tasks. The adjustable air cushion (29 mm) at each end decelerates the piston smoothly, and the PT3/4 ports supply ample flow for rapid cycling within the 30-500 mm/s speed range typical of this ISO 6430 class cylinder.
Airtac SCD Standard Cylinder SCD160X25 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD160X25 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø160 mm |
| Rod diameter | Ø40 mm (both ends) |
| Stroke | 25 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT3/4 |
| Rod thread | M36×2 |
| 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 – 500 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.
Theoretical Output Force (Ø160mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 9425 N | 9425 N |
| 0.7 MPa | 13195 N | 13195 N |
| Max (@1.0 MPa) | 1922 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 SCD160X25
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 160 | 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 SCD160X25 Is Used
Symmetric Clamping
Delivers 9425 N of clamping force from both ends simultaneously, perfect for holding two workpieces against a central fixture with a single cylinder.
Rear Stroke Sensing
The rear rod extension provides a convenient mounting point for a sensor flag or cam, enabling end-of-stroke detection without adding length to the primary tooling side.
Dual-Sided Ejection
Uses the 25 mm stroke to eject parts from a die or nest in two opposite directions, balancing the tooling load on the cylinder's symmetrically supported piston rod.
Is the Airtac SCD Standard Cylinder SCD160X25 the Right Cylinder?
Choose the SCD160X25 when your application demands perfectly balanced force in a compact stroke. If you need more thrust, the SCD200 bore steps up to 15080 N at 0.5 MPa; for a lighter, faster actuator, the SCD125 delivers 5734 N. A single-rod SC cylinder would give a higher push force on the full-bore side, but the SCD is the correct choice when you need a rear rod end for mounting a sensor flag, stopper, or secondary tooling.
For a direct replacement, match the 160 mm bore, 25 mm stroke, PT3/4 (PT) port thread, and basic mounting configuration. If your existing unit has a magnet, order SCD160X25-S. Note that at this short stroke, rod bending is not a concern, but any side load on the exposed rear rod should still be managed with an external guide.
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 SCD160X25 FAQ
The forces are identical in both directions because it is a double-rod cylinder. At 0.5 MPa it produces 9425 N, at 0.7 MPa it delivers 13194 N, and at the maximum operating pressure of 0.9 MPa the thrust reaches 16964 N.
An SC single-rod cylinder has unequal push/pull force and speed due to the rod area on only one side. The SCD double-rod design gives you perfectly equal force and speed in both directions, plus a rear rod extension that can carry a second tool, a sensor target, or a mechanical stop—all while providing better rod bearing support.
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