Airtac SCD Standard Cylinder SCD63X200STC
The AirTAC Airtac SCD Standard Cylinder SCD63X200STC 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, 200mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke200 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD63X200STC
The SCD63X200STC delivers 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, equalising the effective piston area on each side. This model includes a built-in magnet and a centre trunnion mounting set (F-SC63TC with TCM1 bracket), making it ready to pivot under swinging loads right out of the box.
With a 200 mm stroke and a body length A of 210 mm, the cylinder fits compactly into transfer stations and two-sided tooling fixtures. The adjustable air cushion (28 mm) decelerates the piston smoothly at both stroke ends, and the through-rod design provides better bearing support than a single-rod cylinder, reducing rod deflection in push-pull applications where the rear rod end carries a sensor flag or secondary tooling.
Airtac SCD Standard Cylinder SCD63X200STC Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD63X200STC |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 200 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 SCD63X200STC
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×200 | 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 SCD63X200STC Is Used
Bidirectional Shuttle Tables
The equal push and pull force moves a transfer shuttle between two stations with consistent speed and thrust in both directions, simplifying flow-control settings.
Rear-Stroke Position Sensing
The rear rod extension carries a sensor flag or cam. With the built-in magnet, CMSG or DMSG sensors mount directly on the barrel to confirm end-of-stroke at both ends.
Dual-Sided Clamping Fixtures
A tooling plate on each rod end closes two clamps simultaneously. The through-rod keeps the loading symmetric, so the piston bearings wear evenly over millions of cycles.
Is the Airtac SCD Standard Cylinder SCD63X200STC the Right Cylinder?
Choose the SCD63 when your application needs balanced push-pull force around 1400 N at standard plant pressure. If you need roughly 40% less force, step down to the SCD50 (825 N at 0.5 MPa); for about 60% more, the SCD80 delivers 2268 N. This STC variant is specifically for pivoting installations—the centre trunnion lets the cylinder body swing as it strokes, so you avoid side-loading the rod bearings. If your load runs on a fixed linear guide, the basic or foot-mounted (LB) version is usually simpler and cheaper.
For a 200 mm stroke, rod buckling is rarely a concern at these pressures, but if the rear rod end is unsupported and carries a heavy bracket, add an external guide or switch to a guided cylinder. To replace an existing SCD63X200STC, match the 63 mm bore, 200 mm stroke, PT port thread, centre trunnion mount, and the -S magnet option; all five points must align for a drop-in swap.
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 SCD63X200STC FAQ
Push and pull force are identical on a double-rod cylinder. At 0.5 MPa it produces 1402 N, at 0.7 MPa it is 1962 N, and at the maximum operating pressure of 0.9 MPa it reaches 2523 N. The theoretical force at 1.0 MPa is 286 kgf.
Pick the SCD63 when you need equal force and speed in both directions, or when you want to attach tooling, a stopper, or a sensor target to the rear rod. The through-rod also gives the piston better guidance inside the barrel, which helps in applications where the load is not perfectly aligned. If you only need force in one direction and want a smaller footprint, the single-rod SC63 is the better choice.
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