Airtac SCD Standard Cylinder SCD125X160
The AirTAC Airtac SCD Standard Cylinder SCD125X160 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø32mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø125mm bore, 160mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ125 mm
- Rod (both ends)Ø32 mm
- Stroke160 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD125X160
The SCD125X160 is a double-acting pneumatic cylinder with a through-rod design, providing an identical force output of 5734 N in both directions at 0.5 MPa. This symmetry is ideal for applications needing balanced motion, such as transferring parts between two stations where the rear rod can carry a sensor flag or secondary tooling. The 32 mm rod extends from both end caps, giving better bearing support than a single-rod cylinder of the same bore.
With a 160 mm stroke and a body length A(SCD) of 291 mm, this ISO 6430 class cylinder uses a PT1/2 port and features an adjustable air cushion of 28 mm at each end to decelerate the piston smoothly. The maximum thrust at 0.9 MPa reaches 10321 N, making it a powerful choice for heavy, symmetric pushing or pulling tasks in industrial automation.
Airtac SCD Standard Cylinder SCD125X160 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD125X160 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Rod diameter | Ø32 mm (both ends) |
| Stroke | 160 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/2 |
| Rod thread | M27×2 |
| 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, 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 (Ø125mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 5734 N | 5734 N |
| 0.7 MPa | 8027 N | 8027 N |
| Max (@1.0 MPa) | 1169 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 SCD125X160
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 125 | Bore size in mm. |
| ×160 | 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 SCD125X160 Is Used
Two-Sided Transfer Shuttles
The equal push-pull force of 5734 N at 0.5 MPa drives a shuttle table between two fixed positions, with the rear rod available to actuate a secondary mechanism or confirm position.
Symmetric Clamping Fixtures
Use the through-rod to power two opposing clamp arms from a single cylinder, ensuring perfectly synchronized and balanced clamping force on a large weldment or assembly.
Rear-Mounted Stroke Sensing
Mount a DMSG sensor on the rear end cap to detect the piston's position via a target on the exposed rear rod, keeping the front tooling area clear and accessible.
Is the Airtac SCD Standard Cylinder SCD125X160 the Right Cylinder?
Choose the SCD125X160 when your application requires equal force and speed in both directions from a single actuator. If you need more force, the SCD160 delivers 9425 N at 0.5 MPa; for a lighter, more compact solution, the SCD100 provides 3681 N. This double-rod cylinder is not a substitute for a guided cylinder under significant side load—external guides are required for long strokes or off-centre loads. For a direct replacement, match the 125 mm bore, 160 mm stroke, PT port thread, basic mounting, and the absence of a magnet.
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 SCD125X160 FAQ
The push and pull force is identical because the rod area is subtracted from both sides of the piston. It delivers 5734 N at 0.5 MPa, 8028 N at 0.7 MPa, and 10321 N at the maximum operating pressure of 0.9 MPa.
Choose the SCD when you need equal force and speed in both directions, a rear rod end for mounting sensors or tooling, or improved rod guidance and anti-rotation. A single-rod SC cylinder provides a higher push force for the same bore and pressure but has a lower pull force.
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