Airtac SCD Standard Cylinder SCD200X450S
The AirTAC Airtac SCD Standard Cylinder SCD200X450S is a genuine double-acting DOUBLE-ROD air cylinder: the Ø40mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø200mm bore, 450mm stroke, PT3/4 ports and adjustable end cushioning.
- BoreØ200 mm
- Rod (both ends)Ø40 mm
- Stroke450 mm
- Port sizePT3/4
- Rod configDouble rod (through)
- CushionAdjustable, 33 mm
About the Airtac SCD Standard Cylinder SCD200X450S
The SCD200X450S is a heavy-duty double-rod pneumatic cylinder that delivers identical push and pull force of 15080 N at 0.5 MPa, thanks to its through-rod design where both sides of the piston share the same effective area. With a 40 mm rod extending from both ends and a 450 mm stroke, this model is built for large-scale industrial tasks requiring balanced, bidirectional power, such as operating massive transfer shuttles or dual-sided clamping fixtures.
This specific configuration includes a built-in magnet (denoted by the -S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position feedback. The cylinder body has a length of 362 mm (A dimension) and features a 29 mm adjustable air cushion on each end cap to softly decelerate the high inertial loads typical at this bore size, protecting the end caps from impact damage.
Airtac SCD Standard Cylinder SCD200X450S Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD200X450S |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø200 mm |
| Rod diameter | Ø40 mm (both ends) |
| Stroke | 450 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 33 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 (Ø200mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | 21111 N |
| Max (@1.0 MPa) | 3075 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 SCD200X450S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 200 | Bore size in mm. |
| ×450 | 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 SCD200X450S Is Used
Heavy Shuttle Tables
The equal 15080 N force in both directions provides smooth, controlled acceleration and deceleration for a heavy transfer shuttle moving parts between two machining stations without any bias in speed.
Dual-Sided Pressing
Use the front rod for a pressing operation while the rear rod actuates a synchronized ejector mechanism, leveraging the single cylinder for a compact, two-step sequence with perfectly matched forces.
Non-Rotating Lifting Gantry
The dual 40 mm rods provide inherent anti-rotation stability for a lifting beam on a gantry, keeping the load level without the need for a bulky external guide system for the vertical motion.
Is the Airtac SCD Standard Cylinder SCD200X450S the Right Cylinder?
Select the SCD200 bore when your application requires a balanced force output around 15080 N at standard plant pressure. If your load is lighter, stepping down to the SCD160 bore provides 9425 N at the same 0.5 MPa, offering a more compact and energy-efficient solution. A double-rod cylinder is the right choice here over a single-rod SC series unit when you need to mount tooling, a mechanical stop, or a sensor flag on the rear rod, or when the inherent anti-rotation guidance of the dual rod is beneficial.
For this 450 mm stroke, be mindful of the long unsupported rod length when fully extended. While the through-rod provides better bearing support than a single-rod design, significant side loads can still cause rod deflection or seal wear. If the load is not guided externally, consider adding an external guide rail or switching to a guided cylinder. As a direct replacement, this SCD200X450S matches another AirTAC unit with the same 200 mm bore, 450 mm stroke, PT port, basic mounting, and the -S magnet option.
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 SCD200X450S FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.7 MPa operating pressure, this model generates 21111 N of force in both directions. The force is equal because the 40 mm piston rod area is subtracted from the bore area on both sides of the piston.
Choose the SCD200 when you need to use both ends of the rod for work, such as attaching a tool to the front and a sensor flag or stop to the rear. It also provides equal speed and force in both directions, unlike a single-rod cylinder where the pull stroke is weaker and faster. The dual-rod support also offers better side-load resistance, though it is not a full substitute for an externally guided cylinder.
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