The AirTAC Airtac SCD Standard Cylinder SCD100X350 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, 350mm stroke, PT1/2 ports and adjustable end cushioning.
The SCD100X350 is a double-acting, double-rod pneumatic cylinder that outputs an identical 3681 N of force in both the extend and retract strokes when supplied with 0.5 MPa air. Because the 25 mm piston rod passes through both end caps, the effective pressure area is the same on each side, making this actuator ideal for applications that demand balanced thrust and consistent speed in two directions.
With a 350 mm stroke, this 100 mm bore cylinder is well within its 1500 mm maximum standard limit, ensuring ready availability. The body length A(SCD) is 263 mm, and the adjustable air cushion at each end provides a 29 mm deceleration zone to gently brake the piston near stroke completion. It uses a PT1/2 port and an M20x1.5 rod thread, built on a robust tie-rod construction.
| Model | Airtac SCD Standard Cylinder SCD100X350 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 350 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.
| 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.
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 100 | Bore size in mm. |
| ×350 | 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.
The equal push and pull force of 3681 N at 0.5 MPa drives a shuttle table back and forth with symmetric dynamics, perfect for moving parts between two conveyor lines.
Mount a tool on the front rod and a counter-support or second tool on the rear rod. The through-rod design synchronizes their motion without complex linkages.
The dual-rod support provides inherent resistance to rotation, making it suitable for pushing or clamping mechanisms where a single-rod cylinder would require an external guide to prevent twisting.
Choose this 100 mm bore when your application requires around 3681 N of balanced force at 0.5 MPa. If you can accept slightly less thrust, stepping down to an 80 mm bore (2268 N at 0.5 MPa) saves space and air consumption. For tasks needing only a single working direction, a single-rod SC series cylinder is a more economical choice, while a guided cylinder is necessary if the 350 mm extended rod will encounter significant side loads.
For a direct replacement, match the 100 mm bore, 350 mm stroke, PT port thread, and basic mounting configuration. At this stroke length, ensure the load is guided externally to prevent bending of the unsupported 25 mm rod, or consider adding a rod guide to protect the piston bearing from off-axis forces.
Double-rod checklist
The push and pull forces are identical because it is a double-rod cylinder. At 0.5 MPa it produces 3681 N, at 0.7 MPa it produces 5153 N, and at the maximum operating pressure of 0.9 MPa it produces 6626 N in both directions.
Use the SCD100X350 when you need perfectly equal force and speed in both directions, or when you need a rear rod extension to mount sensors, cams, or a secondary tool. The through-rod also provides better guidance and anti-rotation properties than a single-rod cylinder, though it is not a replacement for a fully guided actuator under heavy side loads.
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