Airtac SCD Standard Cylinder SCD100X25S
The AirTAC Airtac SCD Standard Cylinder SCD100X25S 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, 25mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Rod (both ends)Ø25 mm
- Stroke25 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 29 mm
About the Airtac SCD Standard Cylinder SCD100X25S
The SCD100X25S is a double-acting, double-rod pneumatic cylinder delivering symmetrical force in both directions, making it ideal for short-stroke, two-sided tooling tasks. With a 100 mm bore and 25 mm rod, it produces an equal 3681 N of push and pull force at 0.5 MPa, ensuring a balanced motion profile without the force differential found in single-rod designs.
This model features a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for reliable end-of-stroke detection. Its PT1/2 ports and 29 mm adjustable air cushion at each end provide smooth deceleration, while the 263 mm body length (A dimension) keeps the assembly compact for its force class.
Airtac SCD Standard Cylinder SCD100X25S Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD100X25S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 25 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 SCD100X25S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 100 | 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 SCD100X25S Is Used
Two-Sided Actuation
The through-rod design provides equal force and speed in both directions, perfect for driving tooling that must perform work on both the extend and retract strokes.
Sensor-Ready Short Stroke
The built-in magnet allows CMSG/DMSG sensors to be clamped directly to the barrel for precise position feedback, even on this compact 25 mm stroke model.
Anti-Rotation Pusher
The dual-rod support offers inherent resistance to rotation, making it suitable for simple push-and-eject stations where a guided cylinder might be over-specified.
Is the Airtac SCD Standard Cylinder SCD100X25S the Right Cylinder?
Choose the SCD100 bore when your application needs roughly 3681 N of balanced force at standard shop air. If you can work with less force, stepping down to an SCD80 (2268 N at 0.5 MPa) reduces air consumption and physical size. For tasks requiring only a single working end, a standard SC single-rod cylinder is a more economical choice.
To replace an existing SCD100X25S, match the 100 mm bore, 25 mm stroke, PT port thread, and the built-in magnet. The basic mounting style uses the cylinder body directly. For any stroke over 300 mm on this bore, assess the unsupported rod length for buckling or side-load, and consider an external guide rail if the load is not perfectly axial.
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 SCD100X25S FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. 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.
Choose the SCD when you need identical force and speed in both directions, or when you need a rear rod extension to mount a sensor flag, stopper bolt, or secondary tooling. The through-rod also provides better guidance than a single-rod cylinder, though it is not a substitute for a fully guided unit under high side loads.
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