Airtac SCD Standard Cylinder SCD63X50
The AirTAC Airtac SCD Standard Cylinder SCD63X50 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, 50mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke50 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD63X50
The SCD63X50 is a double-acting, double-rod pneumatic cylinder that provides identical force and speed in both directions, outputting 1402 N of thrust each way at 0.5 MPa. Its 20 mm diameter rod passes through both end caps, making it ideal for compact 50 mm stroke applications where a rear rod end is needed for mounting a sensor flag, stopper, or secondary tooling.
With a body length A(SCD) of 210 mm, this 63 mm bore cylinder features an adjustable air cushion of 28 mm at each end to decelerate the piston smoothly. The PT1/4 port and M16x1.5 rod thread are standard, and at the maximum operating pressure of 0.9 MPa, the equal push and pull force reaches 2523 N.
Airtac SCD Standard Cylinder SCD63X50 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD63X50 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 50 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 SCD63X50
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×50 | 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 SCD63X50 Is Used
Two-Sided Actuation
The through rod allows a tool or fixture to be mounted on both ends, enabling a single cylinder to perform work in two locations simultaneously, such as operating two linked gates or clamps.
Anti-Rotation Pusher
The dual-rod support provides inherent resistance to rotation, making it suitable for pushing or ejecting parts on a short-stroke conveyor where a single rod might twist without an external guide.
Rear-Mount Stroke Sensing
The rear rod extension is a convenient mounting point for a sensor flag or cam, allowing end-of-stroke detection to be positioned on the back of the cylinder when the front end is inaccessible.
Is the Airtac SCD Standard Cylinder SCD63X50 the Right Cylinder?
This 63 mm bore model is a balanced mid-range choice. If your application requires more force, stepping up to the 80 mm bore (SCD80) provides 2268 N at 0.5 MPa. For lighter, faster cycling, the 50 mm bore (SCD50) offers 825 N. A double-rod cylinder is the correct selection when you need to attach tooling to both ends or require better rod guidance than a single-rod SC cylinder provides, but it is not a substitute for a guided cylinder under significant side load.
For a direct replacement, match the 63 mm bore, 50 mm stroke, PT port thread, and basic mounting. If your existing unit has a magnet for sensors, order the SCD63X50-S variant. For a pivoting mount, the TC centre trunnion with TCM1 bracket is available.
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 SCD63X50 FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it outputs 1402 N in both directions, 1962 N at 0.7 MPa, and 2523 N at the maximum operating pressure of 0.9 MPa.
Choose the SCD when you need to attach tooling or sensors to both ends of the piston rod, require equal speed and force in both directions, or need the improved guidance and anti-rotation stability that a through rod provides compared to a cantilevered single rod.
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