Airtac SDAD Double Rod Slim Cylinder SDAD40X80S
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X80S is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm bore, 80mm stroke). The through-rod resists twisting and lets you drive a tool on one end while a switch or dog reads position on the other — with identical force in both directions.
- BoreØ40 mm
- Stroke80 mm
- Port sizePT1/8
- Acting typeDouble acting, double rod
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionFixed NBR bumper (both ends)
About the Airtac SDAD Double Rod Slim Cylinder SDAD40X80S
The AirTAC SDAD40X80S is a compact double-acting cylinder featuring a through-rod that exits both ends of the riveted body. Because the rod occupies both chambers, the annular area is identical in each direction, giving exactly 527.8 N of push and pull force at 0.5 MPa. This symmetry prevents twisting and simplifies the handling of balanced loads.
Equipped with a built-in magnet (-S), this unit triggers AirTAC reed or electronic switches via the body sensor grooves. The 40 mm bore dictates a 16 mm rod diameter and PT1/8 air port. End-of-stroke deceleration relies on a fixed NBR bumper, which absorbs shock without requiring manual adjustment.
Airtac SDAD Double Rod Slim Cylinder SDAD40X80S Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X80S |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 mm |
| Acting type | Double acting, rod both ends |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 male (B) |
| 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 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
| Max standard stroke | Up to 120 mm |
Because a rod occupies both cylinder chambers, the effective area — and therefore the force — is identical in both directions. Specifications follow the official AirTAC SDAD datasheet.
Theoretical Output Force (Ø40mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 kgf |
Force uses the annular (rod-side) area on both strokes, so extend and retract match. Actual usable force is lower than theoretical due to friction. Size with a safety margin.
Model Code: Airtac SDAD Double Rod Slim Cylinder SDAD40X80S
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 40 | Bore size in mm. |
| ×80 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch sensing (omit = none). |
| B | Male-thread piston rods (omit = female thread). |
Thread: PT standard. Related SDA-family variants: SDA (single rod), SSA/STA (single acting), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Where the Airtac SDAD Double Rod Slim Cylinder SDAD40X80S Is Used
Guided Strip Peeling
Uses the through-rod to resist twisting while peeling thin material strips, relying on the equal 527.8 N extend and retract force to maintain consistent blade pressure.
Dual-End Transfer Gate
Mounts a diverter flap on one rod end and a magnetic dog on the opposite end, allowing an external reed switch to confirm gate position without external linkages.
Symmetric Lift Fixture
Raises and lowers a 26.9 kg payload vertically, exploiting the matched push and pull annular areas to avoid gravitational drifting during direction changes.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X80S the Right Cylinder?
When sizing this model, compare its bidirectional 527.8 N output at 0.5 MPa against adjacent bores: the SDAD32 provides 345.6 N, while the SDAD50 offers 824.7 N. For this 40 mm bore, a safe working load is roughly 317 N (about 60 percent of the 0.5 MPa figure), allowing a vertical lift of approximately 26.9 kg with a 2:1 safety margin. This specific configuration includes an 80 mm stroke, female M8x1.25 rod-end threads, and a PT1/8 port.
The dual-end through-rod geometry resists rotation and permits mounting a tool on one side while tracking position with a switch on the opposite side. Note that a standard cylinder drifts when air pressure is lost or the valve centers; the fixed NBR bumper only decelerates near the stroke end and does not function as a lock. For secure load holding without live pressure, install an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Need equal force both directions?
- ✓ Anti-rotation / dual-end mounting?
- ✓ Space for a rod that exits both ends
- ✓ Port/thread type (PT)
- ✓ 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 Leave clearance for the rod exiting both ends.
- check Avoid side load on either rod end.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac SDAD Double Rod Slim Cylinder SDAD40X80S FAQ
The push and pull forces are equal because the rod occupies both chambers. It generates 527.8 N at 0.5 MPa, 738.9 N at 0.7 MPa, and a theoretical maximum of 108 kgf at 1.0 MPa. The maximum operating pressure is 1.0 MPa.
Yes, the through-rod design allows you to attach a tool on one end and a detection dog on the other. The built-in magnet (-S) works with AirTAC reed or electronic switches fitted into the body grooves to track position.
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