Airtac SCD Standard Cylinder SCD32X40
The AirTAC Airtac SCD Standard Cylinder SCD32X40 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, 40mm stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Rod (both ends)Ø12 mm
- Stroke40 mm
- Port sizePT1/8
- Rod configDouble rod (through)
- CushionAdjustable, 21 mm
About the Airtac SCD Standard Cylinder SCD32X40
The SCD32X40 is a compact double-rod pneumatic cylinder that provides exactly 345 N of thrust in both directions at 0.5 MPa, thanks to its symmetrical piston design where the 12 mm rod passes through both end caps. With a 40 mm stroke and a body length A of 187 mm, it is a space-efficient choice for short, balanced linear moves.
Its through-rod construction naturally resists rotation and allows you to mount tooling or a sensor flag on the rear rod end, simplifying setups that need two-sided work. The adjustable air cushion (21 mm) at each end decelerates the piston smoothly, protecting end caps during high-cycle operation.
Airtac SCD Standard Cylinder SCD32X40 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD32X40 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø32 mm |
| Rod diameter | Ø12 mm (both ends) |
| Stroke | 40 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.
Theoretical Output Force (Ø32mm, double rod)
| 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.
Model Code: Airtac SCD Standard Cylinder SCD32X40
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 32 | Bore size in mm. |
| ×40 | 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 SCD32X40 Is Used
Two-Sided Part Transfer
The double-ended rod actuates a shuttle plate from either side, moving small parts between two stations with equal speed and force in both directions.
Symmetrical Clamping
Apply identical clamping pressure from both ends of the cylinder, using the front rod for the main clamp and the rear rod for a synchronized secondary hold-down.
Non-Rotating Pusher
The twin-rod support provides better guidance than a single-rod cylinder, making it suitable for light push applications where rod rotation must be minimized without adding external guides.
Is the Airtac SCD Standard Cylinder SCD32X40 the Right Cylinder?
Choose the SCD32X40 when you need equal push-pull force in a small footprint. If your load requires more thrust, step up to the 40 mm bore SCD series, which provides 528 N at the same 0.5 MPa pressure. For applications where only one rod end is accessible, a single-rod SC cylinder is a simpler and more cost-effective alternative. To replace an existing unit, match the 32 mm bore, 40 mm stroke, PT1/8 port thread, basic mounting style, and confirm whether a magnet is needed for sensors.
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 SCD32X40 FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. The effective piston area is the same on both sides. At 0.5 MPa it produces 345 N, at 0.7 MPa it produces 483 N, and at the maximum operating pressure of 0.9 MPa it delivers 621 N.
Pick the SCD when you need a rear rod extension for mounting a limit switch dog, a secondary tool, or a manual override knob. The through-rod design also provides better bearing support than a single-rod cylinder, helping to reduce rod deflection and rotation during the stroke.
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