Airtac SCD Standard Cylinder SCD125X100
The AirTAC Airtac SCD Standard Cylinder SCD125X100 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, 100mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ125 mm
- Rod (both ends)Ø32 mm
- Stroke100 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD125X100
The SCD125X100 is a double-acting, double-rod pneumatic cylinder that provides perfectly symmetrical force output in both directions, delivering 5734 N of thrust each way at 0.5 MPa. Its 32 mm diameter rod extends from both ends of the 125 mm bore, making it ideal for applications where tooling, sensors, or a mechanical stop must be mounted on the rear side, or where equal speed and force are required for a push-pull sequence.
This 100 mm stroke model belongs to the ISO 6430 class tie-rod series, featuring a 28 mm adjustable air cushion at each end to decelerate the piston smoothly. The body length A(SCD) is 291 mm, providing a rigid platform for the through-rod design that inherently offers better bearing support than a single-rod cylinder of the same size.
Airtac SCD Standard Cylinder SCD125X100 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD125X100 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Rod diameter | Ø32 mm (both ends) |
| Stroke | 100 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 SCD125X100
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 125 | Bore size in mm. |
| ×100 | 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 SCD125X100 Is Used
Bidirectional Transfer Shuttles
The equal 5734 N force in both directions moves a shuttle table or workpiece carrier back and forth with identical timing and thrust, simplifying flow control and cycle-rate calculations.
Rear-Mounted Stroke Sensing
The rear rod extension provides a convenient, clean surface to attach a sensor flag or cam for end-of-stroke detection without interfering with the primary tooling on the front rod.
Symmetric Clamping & Pressing
Use the front rod for the main press action and the rear rod to drive a secondary alignment pin or ejector, all from a single cylinder with perfectly matched timing and force.
Is the Airtac SCD Standard Cylinder SCD125X100 the Right Cylinder?
Step up to the SCD160 bore if your application needs more than the 10321 N push/pull force available at 0.9 MPa with this 125 mm model; the 160 mm bore delivers 16964 N at the same pressure. For tasks requiring only a single working direction, the standard SC single-rod series is lighter and more compact. When replacing an existing unit, match all five key points: 125 mm bore, 100 mm stroke, PT port thread, the specific SCD mounting accessory (if any), and the presence of a magnet sensor option (-S). For strokes of 300 mm or longer on this bore, consider an external guide rail to protect the long unsupported rod from bending under side loads.
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 SCD125X100 FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it produces 5734 N, at 0.7 MPa it produces 8028 N, and at the maximum operating pressure of 0.9 MPa it delivers 10321 N in both directions.
Choose the SCD when you need equal force and speed in both directions, or when you need a rear rod extension to mount tooling, a brake, or a position sensor. The through-rod design also provides better guidance and resistance to side load than a single-rod cylinder, though it is not a substitute for a fully guided unit under heavy lateral forces.
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