Airtac SCD Standard Cylinder SCD63X225TC
The AirTAC Airtac SCD Standard Cylinder SCD63X225TC 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, 225mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke225 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD63X225TC
The AirTAC SCD63X225TC is a double-acting, double-rod pneumatic cylinder where the piston rod extends from both ends, delivering identical push and pull force of 1402 N at 0.5 MPa (2523 N at 0.9 MPa) in each direction. This specific model features a 225 mm non-standard stroke and a TC centre trunnion mount, making it ideal for pivoting applications that require balanced, two-sided actuation. The 20 mm diameter rod on both sides provides inherent anti-rotation support and allows tooling or sensors to be mounted on the rear rod.
With a 63 mm bore and a body length A of 210 mm, this tie-rod cylinder uses PT1/4 ports and an M16x1.5 rod thread. The adjustable air cushion, with a 28 mm cushion length, decelerates the piston smoothly at both ends of the stroke. This configuration is a genuine AirTAC product, built for symmetric load handling where a single-rod cylinder would create unequal forces.
Airtac SCD Standard Cylinder SCD63X225TC Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD63X225TC |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 225 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 SCD63X225TC
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×225 | 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 SCD63X225TC Is Used
Two-Sided Transfer Shuttles
Uses the rear rod to push a return shuttle or carry a counterbalance, ensuring the 1402 N force is perfectly mirrored for smooth, synchronized material transfer between two stations.
Pivoting Clamp & Fixture Arms
The TC centre trunnion mount lets the cylinder body swing, while the dual rods provide equal force to open and close a heavy clamping fixture without twisting the linkage.
Non-Rotating Pusher with Rear Flag
The through-rod resists piston rotation, keeping a pusher plate aligned. The rear rod end is perfect for mounting a sensor flag to detect end-of-stroke without interfering with the main tool.
Is the Airtac SCD Standard Cylinder SCD63X225TC the Right Cylinder?
Select the SCD63 bore when your application needs around 1402 N of balanced force at standard plant pressure. If you require more force, stepping up to an SCD80 with its 2268 N output at 0.5 MPa is the logical path; for a lighter, more compact solution, the SCD50 provides 825 N. This TC centre trunnion mount (supplied with the TCM1 bracket, part code F-SC63TC) allows the cylinder to pivot, which is essential for following an arc during actuation. For a direct drop-in replacement, match the 63 mm bore, 225 mm stroke, PT port thread, TC mount, and the absence of a magnet.
At a 225 mm stroke, rod bending under side loads is a moderate concern. The double-rod design offers better guidance than a single-rod cylinder, but it is not a substitute for a proper guided cylinder if the load is not perfectly aligned. For purely linear, end-mounted tasks, an FA front flange or LB foot mount might be a simpler choice than the pivoting TC style.
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 SCD63X225TC FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. 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 perfectly equal force and speed in both directions, or when you need to mount a tool, stopper, or sensor on the rear rod. The through-rod also provides better guidance and anti-rotation than a single-rod cylinder, which is useful for keeping tooling aligned without an external guide.
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