The AirTAC Airtac SCD Standard Cylinder SCD32X85 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø12mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø32mm bore, 85mm stroke, PT1/8 ports and adjustable end cushioning.
The SCD32X85 is a double-acting, double-rod pneumatic cylinder that outputs exactly 345 N of force in both directions at 0.5 MPa, thanks to its 12 mm through-rod subtracting the same area from each piston face. This equal push-pull characteristic makes it ideal for applications where a tool or sensor flag must be mounted on the rear rod end.
With an 85 mm stroke and a compact body length A of 187 mm, this 32 mm bore cylinder fits neatly into fixtures needing symmetric actuation. It features an adjustable air cushion (21 mm length) to decelerate the piston smoothly at both ends, and uses PT1/8 ports. The operating range spans 0.15–1.0 MPa, with a maximum thrust of 621 N at 0.9 MPa.
| Model | Airtac SCD Standard Cylinder SCD32X85 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø32 mm |
| Rod diameter | Ø12 mm (both ends) |
| Stroke | 85 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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 1000 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 | 346 N | 346 N |
| 0.7 MPa | 484 N | 484 N |
| Max (@1.0 MPa) | 70 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). |
|---|---|
| 32 | Bore size in mm. |
| ×85 | 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.
Operates a shuttle table or transfer mechanism where a tool is mounted on both ends of the rod, performing work in both directions with identical force.
The dual-rod support provides better resistance to rotation than a single-rod cylinder, useful for maintaining the orientation of a small non-rotating pusher plate.
The exposed rear rod provides a convenient mounting point for a sensor flag or cam, enabling end-of-stroke detection without adding length to the front tooling.
Step up to the SCD40 if you need more than 345 N at 0.5 MPa, as the 40 mm bore provides 528 N. If your motion only requires force from one end, a single-rod SC series cylinder is a simpler, lower-cost alternative. For true side-load resistance, a guided cylinder is recommended over any through-rod design.
To replace an existing SCD32X85, match the 32 mm bore, 85 mm stroke, PT port thread, and the basic mounting style. If your current unit has a magnet, specify the -S suffix. The double-rod configuration means the overall retracted length is longer than a comparable SC cylinder.
Double-rod checklist
The push and pull forces are identical. At 0.5 MPa, both are 345 N. At 0.7 MPa, both are 483 N, and at the maximum operating pressure of 0.9 MPa, both forces reach 621 N.
Choose the SCD when you need equal force and speed in both directions, or when you need to mount a tool, stopper, or sensor on the rear rod. The through-rod also provides better guidance against rod deflection than a single-rod design.
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