Airtac SCD Standard Cylinder SCD100X800S
The AirTAC Airtac SCD Standard Cylinder SCD100X800S is a genuine double-acting DOUBLE-ROD air cylinder: the Ø25mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø100mm bore, 800mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Rod (both ends)Ø25 mm
- Stroke800 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 29 mm
About the Airtac SCD Standard Cylinder SCD100X800S
The SCD100X800S is a double-acting, double-rod pneumatic cylinder delivering identical push and pull force in both directions—3681 N at 0.5 MPa, rising to 6626 N at the maximum operating pressure of 0.9 MPa. Both ends feature a 25 mm diameter rod, subtracting the same area from each piston face, which makes this actuator ideal for applications where balanced speed and thrust are critical, such as operating tooling on both sides of a transfer line.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG sensors to be clamped directly onto the tie-rod barrel for non-contact position sensing. The 800 mm stroke is well within the 1500 mm maximum for the 100 mm bore, and the adjustable air cushion (29 mm length) at each end decelerates the piston smoothly. The body length A(SCD) is 263 mm, making the overall retracted length longer than an equivalent single-rod SC cylinder.
Airtac SCD Standard Cylinder SCD100X800S Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD100X800S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 800 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
| 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, 29 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 (Ø100mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | 5154 N |
| Max (@1.0 MPa) | 751 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 SCD100X800S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 100 | Bore size in mm. |
| ×800 | 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 SCD100X800S Is Used
Two-Sided Transfer Shuttles
The equal force and speed in both directions, combined with the 800 mm stroke, makes the SCD100X800S perfect for shuttling a workpiece carrier between two parallel conveyor lines, with the rear rod available to operate a secondary stopper or sensor flag.
Symmetric Clamping & Pressing
Use the front and rear rod ends to simultaneously clamp two parts or press two bushings into a housing from opposite sides, ensuring perfectly balanced application of the 3681 N force at 0.5 MPa without twisting the tooling.
Long-Stroke Position Feedback
The built-in magnet (-S) enables CMSG/DMSG sensors to track the piston's position along the entire 800 mm travel. Mount a sensor on the rear barrel section to confirm full retraction when the rear rod is obscured by tooling.
Is the Airtac SCD Standard Cylinder SCD100X800S the Right Cylinder?
Select the SCD100 when your application needs around 3681 N of balanced force at 0.5 MPa. If you require significantly less thrust, the SCD80 bore provides 2268 N at the same pressure, offering a more compact and energy-efficient solution. For higher forces, step up to the SCD125, which delivers 5734 N at 0.5 MPa. For a direct replacement, match the 100 mm bore, 800 mm stroke, PT port thread, basic mounting, and the magnetic piston option (-S).
At an 800 mm stroke, the exposed rod length on both ends is substantial. While the through-rod design provides better guidance than a single-rod cylinder, it is not a substitute for a fully guided unit under side load. If the application imposes significant lateral forces, consider adding an external linear guide or switching to a guided cylinder to prevent rod bending and premature seal wear.
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 SCD100X800S FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. The effective piston area is calculated using the 100 mm bore minus the 25 mm rod area. The force is 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and 6626 N at the maximum operating pressure of 0.9 MPa.
Choose the SCD when you need a rear rod extension for mounting tooling, a cam, or a sensor flag, or when you require perfectly equal speed and force in both directions. The through-rod also provides better bearing support and inherent anti-rotation compared to a single-rod cylinder, making it suitable for applications where the rod must resist twisting.
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