Airtac SCD Standard Cylinder SCD63X240
The AirTAC Airtac SCD Standard Cylinder SCD63X240 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø20mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø63mm bore, 240mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke240 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD63X240
The SCD63X240 is a double-acting, double-rod pneumatic cylinder where the piston rod extends through both end caps, giving you identical push and pull force of 1402 N at 0.5 MPa (2523 N at the 0.9 MPa maximum operating pressure). Both rods are a sturdy 20 mm diameter with M16x1.5 threads, and the 240 mm stroke sits comfortably within the 1500 mm maximum standard stroke for this 63 mm bore.
With a body length A(SCD) of 210 mm, this tie-rod cylinder provides a symmetric, through-rod design that naturally resists rotation and supports tooling or sensors on the rear rod. The adjustable air cushion (28 mm) decelerates the piston smoothly at both ends, and the PT1/4 ports supply filtered air for consistent cycling in two-sided actuation tasks.
Airtac SCD Standard Cylinder SCD63X240 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD63X240 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 240 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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, 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 (Ø63mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1402 N | 1402 N |
| 0.7 MPa | 1962 N | 1962 N |
| Max (@1.0 MPa) | 286 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 SCD63X240
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×240 | 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 SCD63X240 Is Used
Two-Sided Transfer Shuttles
The rear rod can carry a counterweight or a second tooling plate, making the SCD63X240 ideal for balanced shuttle tables where equal push-pull force of 1402 N at 0.5 MPa moves a load between two stations.
Symmetric Clamping & Forming
Use the identical thrust in both directions for pressing or forming operations. The 20 mm through-rod provides better bearing support than a single-rod cylinder, helping maintain alignment during the 240 mm stroke.
Rear-Mounted Stroke Sensing
Attach a sensor flag or cam to the rear rod extension to detect piston position without interfering with the front tooling. The double-rod design gives you a clean, accessible mounting point on the back of the cylinder.
Is the Airtac SCD Standard Cylinder SCD63X240 the Right Cylinder?
Step up to the SCD80 bore if your application demands more than 2268 N of force at 0.5 MPa; step down to the SCD50 (825 N at 0.5 MPa) for lighter, more compact installations. A double-rod SCD is the right choice when you need equal speed and thrust in both directions, but if you only require force from one side, the single-rod SC series offers a larger push area. For a drop-in replacement, match the 63 mm bore, 240 mm stroke, PT port thread, basic mounting, and absence of a magnet.
At a 240 mm stroke, the unsupported rod length is moderate, but if your tooling applies a side load, do not rely on the through-rod alone for guidance—add an external linear guide or switch to a dedicated guided cylinder to protect the rod bearings from premature wear.
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 SCD63X240 FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa you get 1402 N, at 0.7 MPa it is 1962 N, and at the maximum operating pressure of 0.9 MPa the force reaches 2523 N. The theoretical force at 1.0 MPa is 286 kgf.
Choose the SCD when you need equal force and speed in both directions, or when you want to mount tooling, a stopper, or a sensor flag on the rear rod. The through-rod also provides better guidance and anti-rotation than a single-rod cylinder. If you only need force in one direction, the single-rod SC63 will give you a higher push force because it uses the full bore area.
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