Airtac SCD Standard Cylinder SCD63X65FA
The AirTAC Airtac SCD Standard Cylinder SCD63X65FA 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, 65mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke65 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD63X65FA
The SCD63X65FA delivers identical thrust in both directions—1402 N at 0.5 MPa and 2523 N at the 0.9 MPa maximum—thanks to its through-rod design where the Ø20 mm rod extends from both ends. This symmetry eliminates force differentials, making it ideal for applications where a tool or sensor flag must be mounted on the rear rod, or where the load must be pushed and pulled with precisely matched power.
At 65 mm of stroke, this front-flange mounted cylinder is compact enough for tight end-of-arm tooling yet provides the robust force of a 63 mm bore. The FA rectangular flange (part F-SC63FA) bolts directly to a panel or machine face, ensuring rigid alignment. Its 28 mm air cushion at each end decelerates the piston smoothly, protecting end caps during high-cycle, two-sided operation.
Airtac SCD Standard Cylinder SCD63X65FA Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD63X65FA |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 65 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 SCD63X65FA
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×65 | 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 SCD63X65FA Is Used
Two-Sided Transfer Shuttles
The rear rod can carry a mirror-image gripper or tool, allowing the cylinder to transfer parts between two parallel conveyors with a single actuator and perfectly synchronized motion.
Non-Rotating Alignment Pushers
With a rod supported by bearings in both end caps, this cylinder offers enhanced resistance to rod rotation. It pushes components into a fixture with high linear accuracy, crucial for press-fit or assembly stations.
Rear-Mounted Stroke Sensing
Mount a DMSG magnetic sensor on the rear end of the tie-rod barrel to detect piston position, while the front rod performs the work. This keeps the sensor and cable safely away from the process zone.
Is the Airtac SCD Standard Cylinder SCD63X65FA the Right Cylinder?
Choose the SCD63 bore when your application needs roughly 1400 N of balanced force per direction. If you can accept a lower force of 825 N, stepping down to the SCD50 reduces air consumption and physical size. For tasks requiring over 2200 N at the same 0.5 MPa pressure, the SCD80 provides a substantial jump in output. If your motion only requires a working rod on one end, the single-rod SC63 series is a more economical choice that provides a higher push force on the full-bore face. This SCD63X65FA is a direct replacement for another AirTAC SCD63 double-rod cylinder of the same 65 mm stroke, provided it also uses a PT port, FA front flange mount, and no magnet. For strokes over 300 mm in this bore, assess the unsupported rod length for potential buckling under compressive loads.
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 SCD63X65FA FAQ
Because it is a double-rod cylinder, the push and pull forces are equal. The effective piston area is the same on both sides. At 0.5 MPa it produces 1402 N, at 0.7 MPa it produces 1962 N, and at the maximum operating pressure of 0.9 MPa it produces 2523 N in both directions.
Choose the SCD when you need identical force and speed in both directions, or when you need to attach tooling, a cam, or a position feedback flag to a rod on the back of the cylinder. The dual-rod bearing support also provides better side-load resistance and prevents piston rod rotation compared to a single-rod design, though it is not a substitute for a fully guided cylinder under heavy side loads.
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