Airtac SCD Standard Cylinder SCD100X225
The AirTAC Airtac SCD Standard Cylinder SCD100X225 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. Ø100mm bore, 225mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Rod (both ends)Ø25 mm
- Stroke225 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 29 mm
About the Airtac SCD Standard Cylinder SCD100X225
The SCD100X225 double-rod pneumatic cylinder provides identical 3681 N thrust in both extend and retract directions at 0.5 MPa, thanks to its through-rod construction that subtracts the 25 mm rod area from both piston faces. This symmetry eliminates force differentials that complicate tooling design, making it a natural fit for two-sided fixtures, shuttle tables, and transfer mechanisms where the rear rod extension carries a secondary tool, stopper, or sensor flag.
With a 100 mm bore and 225 mm stroke, this model stays within the standard stroke range for the series. The adjustable air cushion on each end cap decelerates the piston smoothly over a 29 mm cushion length, and the PT1/2 port threads ensure straightforward pneumatic connections. The body length A(SCD) is 263 mm, giving a longer overall envelope than a single-rod cylinder of the same bore and stroke due to the rod protruding from both ends.
Airtac SCD Standard Cylinder SCD100X225 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD100X225 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 225 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/2 |
| 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, 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 (Ø100mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | 5154 N |
| Max (@1.0 MPa) | 751 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 SCD100X225
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 100 | Bore size in mm. |
| ×225 | 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 SCD100X225 Is Used
Two-Sided Actuation
The rear rod extension drives a secondary mechanism or mirror-image tooling, performing work on both ends of the cylinder simultaneously with perfectly matched force and speed.
Shuttle Transfer Tables
Moves a workpiece carrier between two stations with equal acceleration and deceleration in both directions, while the rear rod can mount a confirmation sensor flag for end-of-stroke verification.
Non-Rotating Pusher
The dual-rod support provides inherent anti-rotation stability for a pusher plate, eliminating the need for an external guide shaft in light-duty alignment and sorting tasks.
Is the Airtac SCD Standard Cylinder SCD100X225 the Right Cylinder?
This 100 mm bore double-rod cylinder suits applications needing balanced bidirectional force around 3.7 kN at typical shop air. If your load requires significantly less thrust, stepping down to the 80 mm bore SCD (2268 N at 0.5 MPa) reduces air consumption and physical size. For higher force demands, the 125 mm bore SCD delivers 5734 N at the same pressure. Always confirm that the 25 mm through-rod, supported by bearings in both end caps, can handle any side forces in your setup.
At a 225 mm stroke, the unsupported rod length is moderate, but if the tooling applies a bending moment, an external linear guide or a dedicated guided cylinder is a safer choice than relying solely on the double-rod bearings. For direct replacement, match the 100 mm bore, 225 mm stroke, PT port thread, and the basic mounting configuration of this SCD100X225. If your existing unit uses a magnet for barrel-mounted sensors, specify the -S suffix on the replacement order.
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 SCD100X225 FAQ
Because the piston rod passes through both ends of the cylinder, the effective pressure area is identical for both directions. The force is 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and 6626 N at the maximum operating pressure of 0.9 MPa. Push and pull outputs are always equal on a double-rod cylinder.
Choose the SCD when you need perfectly equal force and speed in both directions, or when you require a rear rod extension to mount tooling, a mechanical stop, or a sensor target. The through-rod also provides better bearing support than a single-rod design, though it is not a replacement for a fully guided cylinder under significant side load.
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