Airtac SCD Standard Cylinder SCD200X25
The AirTAC Airtac SCD Standard Cylinder SCD200X25 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. Ø200mm bore, 25mm stroke, PT3/4 ports and adjustable end cushioning.
- BoreØ200 mm
- Rod (both ends)Ø40 mm
- Stroke25 mm
- Port sizePT3/4
- Rod configDouble rod (through)
- CushionAdjustable, 33 mm
About the Airtac SCD Standard Cylinder SCD200X25
The SCD200X25 is a double-acting, double-rod pneumatic cylinder that generates an identical 15080 N of force in both the extend and retract strokes at 0.5 MPa, rising to 27143 N at the maximum operating pressure of 0.9 MPa. Its 40 mm diameter piston rod passes through both end caps, providing a rigid, anti-rotation platform for mounting tooling, sensors, or stops on either side of the cylinder.
With a compact 25 mm stroke and a body length of 362 mm, this tie-rod cylinder is ideal for short-throw clamping, ejecting, and positioning tasks where balanced bidirectional force is critical. The adjustable pneumatic cushion (29 mm) at each end decelerates the piston smoothly, protecting the end caps during high-cycle operation.
Airtac SCD Standard Cylinder SCD200X25 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD200X25 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø200 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, 33 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 (Ø200mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | 21111 N |
| Max (@1.0 MPa) | 3075 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 SCD200X25
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 200 | 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 SCD200X25 Is Used
Bidirectional Clamping
The equal 15080 N force in both directions makes the SCD200X25 perfect for symmetrical clamping fixtures where the workpiece is engaged from two sides simultaneously.
Dual-Side Sensing
With a rod extending from the rear cap, a sensor flag or cam can be mounted to trigger external limit switches, confirming clamp position without adding length to the front tooling.
Short-Stroke Ejector
The rigid 40 mm through rod and 25 mm stroke provide a stable, guided ejection motion for heavy parts, preventing the piston from rotating under load.
Is the Airtac SCD Standard Cylinder SCD200X25 the Right Cylinder?
Choose the SCD200X25 when you need a powerful, short-stroke actuator with a through rod for dual-sided operation. If your force requirement is lower, stepping down to the SCD160 bore reduces the output to 9425 N at 0.5 MPa, which may allow for a smaller, lighter machine design. For applications requiring a longer stroke, the SCD200 series supports up to 1500 mm as standard.
This double-rod cylinder is not a direct dimensional replacement for ISO 15552 profiles; it is an AirTAC-specific tie-rod design. When replacing an existing unit, match the 200 mm bore, 25 mm stroke, PT port thread, and basic mounting configuration. If the load must be held in position without air pressure, an external rod lock or pilot-operated check valve is required, as the air cushion only provides end-of-stroke deceleration.
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 SCD200X25 FAQ
The push and pull forces are identical because the piston rod extends from both ends. At 0.5 MPa, the force is 15080 N; at 0.7 MPa, it is 21111 N; and at the maximum operating pressure of 0.9 MPa, it reaches 27143 N.
Select the SCD when you need equal force and speed in both directions, or when you require a rear rod extension to mount cams, sensors, or a secondary tool. The through rod also provides better guidance and inherent anti-rotation compared to a single-rod cylinder of the same bore.
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