The AirTAC Airtac SCD Standard Cylinder SCD100X70 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, 70mm stroke, PT1/2 ports and adjustable end cushioning.
The SCD100X70 is a double-acting, double-rod pneumatic cylinder that outputs an identical 3681 N of thrust in both directions at 0.5 MPa, thanks to its through-rod design where the 25 mm rod subtracts the same area from each piston face. With a 70 mm stroke and a body length A(SCD) of 263 mm, it fits compact two-sided tooling stations where the rear rod extension can carry a sensor flag or secondary stripper plate.
This 100 mm bore tie-rod cylinder runs on 40 µm filtered air at 0.15–1.0 MPa and uses an adjustable air cushion (29 mm length) to decelerate the piston smoothly at each end. The standard PT1/2 ports and M20x1.5 rod threads connect directly to common pneumatic fittings, and the speed range of 30–800 mm/s suits rapid transfer cycles without sacrificing end-of-stroke control.
| Model | Airtac SCD Standard Cylinder SCD100X70 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 70 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. |
| ×70 | 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 through-rod design lets a single SCD100X70 power a transfer shuttle that picks and places parts on both sides of the cylinder body, using the front rod for one station and the rear rod for the return stroke tooling.
Delivers exactly 3681 N of clamping force in both directions at 0.5 MPa, making it ideal for symmetrical press fixtures where the workpiece is engaged from two opposite sides with identical pressure.
The dual-rod support at both end caps provides better resistance to rod rotation than a single-rod cylinder, useful for pushing flat plates or guided tooling where twist must be minimized without adding external guides.
Choose the SCD100X70 when you need balanced, equal-force actuation from both ends of the rod in a compact 70 mm stroke. If your force requirement drops, the 80 mm bore SCD80 delivers 2268 N each way at 0.5 MPa and may reduce air consumption; for heavier loads, the 125 mm bore SCD125 provides 5734 N. If you only need force from one rod end, the single-rod SC100 series is a simpler, lower-cost alternative.
This cylinder is a direct dimensional replacement for another AirTAC SCD100 double-rod unit matching the 100 mm bore, 70 mm stroke, PT1/2 ports, basic mounting, and no magnet. For strokes of 300 mm or longer, always evaluate the unsupported rod column for buckling under compressive load; on this 70 mm stroke model, rod bending is rarely a concern in standard push-pull applications.
Double-rod checklist
Because the SCD100 is a double-rod cylinder, the effective piston area is identical on both sides. 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. The theoretical force at 1.0 MPa is 751 kgf.
Pick the 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 dual-rod bearing support also gives better guidance against rod deflection. If you only need force from one end and want a simpler, more compact cylinder, the SC single-rod series is the better choice.
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