Airtac SCD Standard Cylinder SCD50X150FA
The AirTAC Airtac SCD Standard Cylinder SCD50X150FA 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. Ø50mm bore, 150mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Rod (both ends)Ø20 mm
- Stroke150 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 21 mm
About the Airtac SCD Standard Cylinder SCD50X150FA
The SCD50X150FA is a double-acting, double-rod pneumatic cylinder that delivers perfectly symmetrical force in both directions—825 N at 0.5 MPa and up to 1484 N at 0.9 MPa. The 20 mm diameter rod passes through both end caps, providing a rear rod extension that can carry a sensor flag, stopper, or secondary tooling, making it ideal for applications where identical push and pull thrust is non-negotiable.
This model is factory-configured with an FA front flange (F-SC50FA) for secure end-face mounting. With a 150 mm stroke, it operates comfortably within the 1200 mm maximum standard stroke for the 50 mm bore. The adjustable air cushion on each end is 21 mm long, and the body length A(SCD) is 207 mm, giving it a longer retracted envelope than the equivalent single-rod SC cylinder.
Airtac SCD Standard Cylinder SCD50X150FA Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD50X150FA |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø50 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 150 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, 21 mm |
| Max stroke | Up to 1200 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 (Ø50mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 825 N | 825 N |
| 0.7 MPa | 1155 N | 1155 N |
| Max (@1.0 MPa) | 168 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 SCD50X150FA
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 50 | Bore size in mm. |
| ×150 | 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 SCD50X150FA Is Used
Bidirectional Clamping
The equal 825 N force in both directions makes this cylinder perfect for symmetrical clamping fixtures where the grip force must be identical whether opening or closing.
Rear Stroke Sensing
The through-rod design allows a CMSG or DMSG magnetic sensor to be mounted on the rear barrel to detect full retraction, using the rear rod extension as a simple flag mount.
Panel-Mounted Transfer
With the FA front flange, this cylinder bolts directly to a panel for a clean, rigid installation. The dual-rod guidance helps maintain alignment in light push-pull transfer tasks.
Is the Airtac SCD Standard Cylinder SCD50X150FA the Right Cylinder?
Choose the SCD50 when your application requires identical force in both directions; the equal 825 N output at 0.5 MPa avoids the force asymmetry of a single-rod cylinder. If you need more thrust, step up to the 63 mm bore, which provides 1402 N at the same pressure. For a single-rod solution with a higher push force, consider the standard SC series. The FA front flange mount is ideal when the cylinder body must be bolted directly to a machine frame from the rod end. To replace an existing SCD50, match the bore, 150 mm stroke, PT port thread, FA mounting, and confirm whether a magnet is required.
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 SCD50X150FA FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it produces 825 N, at 0.7 MPa it produces 1154 N, and at the maximum operating pressure of 0.9 MPa it produces 1484 N in both directions.
You choose an SCD when you need equal force and speed in both directions, or when you need a rear rod extension to mount a sensor flag, stopper bolt, or secondary tooling. The through-rod also provides better bearing support than a single-rod cylinder, though it is not a replacement for a fully guided cylinder under heavy side loads.
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