Airtac SCD Standard Cylinder SCD50X50
The AirTAC Airtac SCD Standard Cylinder SCD50X50 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, 50mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Rod (both ends)Ø20 mm
- Stroke50 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 21 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SCD Standard Cylinder SCD50X50
The AirTAC SCD50X50 is a double-acting, double-rod pneumatic cylinder that provides identical thrust in both directions—825 N at 0.5 MPa—because the 20 mm rod extends from both end caps. With a short 50 mm stroke and a body length A of 207 mm, it is a compact solution for tasks needing a rear rod connection point for a sensor flag or secondary tooling.
Both ends feature an M16x1.5 rod thread and PT1/4 ports, with an adjustable air cushion of 21 mm to decelerate the piston smoothly. This genuine AirTAC tie-rod cylinder is built for filtered air up to 1.0 MPa and operates reliably from -20 to +70 °C with its standard TPU seals.
Airtac SCD Standard Cylinder SCD50X50 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD50X50 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø50 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 50 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 SCD50X50
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 50 | Bore size in mm. |
| ×50 | 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 SCD50X50 Is Used
Reciprocating Transfer Shuttle
The equal push/pull force of 825 N at 0.5 MPa makes the SCD50X50 ideal for a small two-position shuttle table where a workpiece must be moved back and forth with identical speed and thrust in both directions.
Dual-Sided Actuation Fixture
Use the front rod to press a part and the rear rod to simultaneously activate a limit switch or operate a secondary mechanism, simplifying the fixture design with one synchronized motion.
Anti-Rotation Pusher
The twin 20 mm rods provide inherent anti-rotation stability for a short 50 mm push stroke, guiding a small pusher plate without the immediate need for a separate external guide in light-duty alignment tasks.
Is the Airtac SCD Standard Cylinder SCD50X50 the Right Cylinder?
This 50 mm bore model suits applications needing around 825 N of balanced force. If your load requires more thrust, the SCD63 offers 1402 N at the same pressure, while the SCD40 provides 528 N for lighter, faster cycling. Remember that a through-rod improves guidance but does not eliminate side-load limits—add an external guide rail if the load is off-centre.
For a direct replacement, match the 50 mm bore, 50 mm stroke, PT port thread, and basic mounting style. If your existing unit has a magnet, order SCD50X50-S to accept CMSG/DMSG sensors. This double-rod actuator is not interchangeable with a single-rod SC cylinder, as the force balance and rear rod extension are fundamentally different.
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 SCD50X50 FAQ
The push and pull force are identical at 825 N with 0.5 MPa air pressure, 1154 N at 0.7 MPa, and 1484 N at the maximum operating pressure of 0.9 MPa. This is because the 20 mm rod occupies both pressure chambers equally.
Choose the SCD when you need a rear rod extension for mounting sensors, cams, or secondary tooling, or when you require perfectly equal force and speed in both directions. The through-rod design also provides better guidance and bending resistance than a single-rod cylinder of the same size.
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