Airtac SCD Standard Cylinder SCD63X500
The AirTAC Airtac SCD Standard Cylinder SCD63X500 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, 500mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke500 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD63X500
The SCD63X500 is a double-acting, double-rod pneumatic cylinder that outputs identical force in both directions—1402 N at 0.5 MPa and 2523 N at the maximum operating pressure of 0.9 MPa. Because the 20 mm rod passes through both end caps, the effective piston area is the same on each side, making this actuator ideal for tasks where balanced thrust and speed are critical, such as operating two fixtures from one cylinder or using the rear rod for stroke confirmation.
With a 500 mm stroke, this model stays within the standard stroke range for the 63 mm bore, which can be ordered up to 1500 mm. The adjustable air cushion at each end (28 mm long) decelerates the piston smoothly, and the body length A(SCD) is 210 mm, giving the assembly a longer retracted footprint than a single-rod SC of the same size.
Airtac SCD Standard Cylinder SCD63X500 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD63X500 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 500 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 SCD63X500
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×500 | 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 SCD63X500 Is Used
Two-Sided Actuation
The through-rod design lets you mount tooling on both ends to operate two clamps, gates, or stops simultaneously from a single cylinder, with equal force and speed on each stroke.
Long-Stroke Transfer
At 500 mm, this cylinder suits shuttle tables and material transfer units where the rear rod can carry a secondary sensor flag for mid-stroke position verification without extra brackets.
Anti-Rotation Pusher
The dual-rod bearing support provides better resistance to rod rotation than a single-rod cylinder, making it a solid choice for pushing applications where the tooling must stay aligned.
Is the Airtac SCD Standard Cylinder SCD63X500 the Right Cylinder?
Choose the SCD63X500 when you need a symmetric push-pull force of 1402 N at 0.5 MPa. If your load requires more thrust, stepping up to the SCD80 bore provides 2268 N at the same pressure, while the SCD50 delivers 825 N for lighter, more compact applications. A double-rod cylinder is the right pick over a single-rod SC when you need to mount tooling or a sensor flag on the rear rod, or when the extra bearing support helps reduce rod deflection.
At a 500 mm stroke, the unsupported rod length can create a bending moment under side load. If your application pushes off-axis, add an external linear guide or consider a guided cylinder instead. For a drop-in replacement, match the 63 mm bore, 500 mm stroke, PT port thread, basic mounting, and the absence of a magnet; only another AirTAC SCD63X500 will fit the same mounting footprint and cushion length.
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 SCD63X500 FAQ
Push and pull forces are identical because the rod extends from both ends. 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.
Pick the SCD when you need equal force and speed in both directions, want to attach tooling or a sensor flag to the rear rod, or require the extra rod guidance to resist rotation. If you only need force from one end and want a shorter overall length, the single-rod SC is the better fit.
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