Airtac SCD Standard Cylinder SCD40X100
The AirTAC Airtac SCD Standard Cylinder SCD40X100 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø16mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø40mm bore, 100mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Rod (both ends)Ø16 mm
- Stroke100 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 21 mm
About the Airtac SCD Standard Cylinder SCD40X100
The SCD40X100 is a double-acting, double-rod pneumatic cylinder that generates an identical 528 N of thrust in both directions at 0.5 MPa, thanks to its 16 mm rod passing through both end caps. This 40 mm bore model features a PT1/4 port, M12x1.25 rod thread, and a 21 mm adjustable air cushion, making it a balanced choice for light-duty tasks where the rear rod extension is needed for mounting a sensor flag or secondary tooling.
With a 100 mm stroke, this cylinder operates comfortably within the 1200 mm maximum standard stroke for the 40 mm bore. Its tie-rod construction provides a robust and serviceable design, while the equal push-pull force simplifies pneumatic circuit design by eliminating the force asymmetry found in single-rod cylinders.
Airtac SCD Standard Cylinder SCD40X100 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD40X100 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø40 mm |
| Rod diameter | Ø16 mm (both ends) |
| Stroke | 100 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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, 21 mm |
| Max stroke | Up to 1200 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 (Ø40mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | 739 N |
| Max (@1.0 MPa) | 108 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 SCD40X100
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 40 | 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 SCD40X100 Is Used
Bidirectional Clamping
The equal push and pull force makes this cylinder ideal for clamping fixtures where the workpiece is engaged from either side with the same pressure, ensuring symmetrical holding force.
Dual-Sided Labeling
A rear rod extension can trigger a limit switch for a label applicator, while the front rod performs the press. The through-rod design provides inherent anti-rotation for consistent alignment.
Small Part Transfer
Use the SCD40X100 on a mini shuttle table to move small components between two stations. The rear rod can be fitted with a stop to precisely limit the return stroke.
Is the Airtac SCD Standard Cylinder SCD40X100 the Right Cylinder?
Select the SCD40X100 when your application requires equal force and speed in both directions within a compact footprint. The 40 mm bore delivers 528 N at 0.5 MPa; if you need more force, stepping up to the SCD50 bore provides 825 N under the same pressure. If your application only needs force in one direction, a single-rod SC series cylinder is a more economical choice. For replacement, ensure an exact match on the 40 mm bore, 100 mm stroke, PT1/4 port thread, and basic mounting configuration.
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 SCD40X100 FAQ
The push and pull forces are equal because the piston rod extends through both ends of the cylinder. At 0.5 MPa, the force is 528 N; at 0.7 MPa, it is 739 N; and at the maximum operating pressure of 0.9 MPa, it reaches 950 N.
Choose an SCD when you need identical output force and speed in both directions, or when you need to attach tooling, sensors, or a mechanical stop to the rear rod. The through-rod also provides better support for the piston, reducing uneven bushing wear compared to a single-rod cylinder under side-load-free conditions.
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