Airtac SCD Standard Cylinder SCD63X70S
The AirTAC Airtac SCD Standard Cylinder SCD63X70S 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, 70mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke70 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD63X70S
The SCD63X70S is a double-acting, double-rod pneumatic cylinder that provides identical force in both directions, delivering 1402 N of push and 1402 N of pull at 0.5 MPa. With a 20 mm diameter rod extending from both ends, it is ideal for applications needing symmetric motion or a rear rod for mounting cams, flags, or stoppers. The 70 mm stroke fits neatly into compact tooling where balanced force is critical.
This model includes a built-in magnet, allowing easy attachment of CMSG, DMSG, or EMSG sensors directly to the tie-rod barrel for reliable end-of-stroke detection. The body length A is 210 mm, and the adjustable air cushion at each end (28 mm long) decelerates the piston smoothly, reducing impact noise and vibration in high-cycle tasks.
Airtac SCD Standard Cylinder SCD63X70S Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD63X70S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 70 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 SCD63X70S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×70 | 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 SCD63X70S Is Used
Two-Sided Actuation
Operates tooling or clamps from both ends simultaneously, using the equal force and speed to synchronize a dual-action mechanism without complex linkages.
Rear Flag Sensing
The rear rod is perfect for mounting a sensor flag or cam, allowing position confirmation on the back side of the cylinder where space is limited.
Anti-Rotation Pusher
The dual-rod design provides better resistance to rotation than a single-rod cylinder, making it suitable for light pushing or guiding without a full external rail.
Is the Airtac SCD Standard Cylinder SCD63X70S the Right Cylinder?
Choose the SCD63X70S when your application requires a compact double-rod actuator with sensor-ready position feedback. If you need more force, stepping up to the SCD80 bore provides 2268 N at 0.5 MPa. For a single-rod solution with a higher push force on the extend stroke, consider the standard SC63 series. To ensure a direct dimensional replacement, match the 63 mm bore, 70 mm stroke, PT port thread, basic mounting, and the integrated magnet feature.
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 SCD63X70S FAQ
The forces are equal in both directions. At 0.5 MPa, it provides 1402 N of push and 1402 N of pull. At the maximum operating pressure of 0.9 MPa, the force increases to 2523 N each way.
A double-rod cylinder is selected when you need identical force and speed on the extend and retract strokes, or when you need to mount tooling or sensors on the rear rod. It also offers improved rod guidance and anti-rotation compared to a single-rod design.
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