Airtac SDAD Double Rod Slim Cylinder SDAD40X80
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X80 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 SDAD40X80
The AirTAC SDAD40X80 is a double-acting compact 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, yielding equal push and pull forces of 527.8 N at 0.5 MPa. This symmetry is highly advantageous when driving loads that require consistent kinetic energy regardless of travel direction.
A 16 mm piston rod resists twisting moments, allowing you to mount a work tool on one end and a position dog on the opposite side. The short body design minimizes axial footprint, while the fixed NBR bumper decelerates the piston near stroke limits. Operating pressure spans 0.15 to 1.0 MPa, and the unit reaches speeds of 30-500 mm/s.
Airtac SDAD Double Rod Slim Cylinder SDAD40X80 Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X80 |
|---|---|
| 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 SDAD40X80
| 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 SDAD40X80 Is Used
Symmetric Transfer Chuck
Drives a clamping jaw on one rod end and a dog on the other, utilizing the identical 527.8 N extend and retract force to move components without rotational drift.
Balanced Lift Station
Raises and lowers a 26.9 kg vertical payload using the through-rod design to maintain stability, preventing side twisting during the 80 mm travel.
Dual-End Sealing Press
Mounts a sealing head on the front and a mechanical stop on the rear, relying on the compact riveted body to save axial depth in a tight packaging cell.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X80 the Right Cylinder?
When sizing this unit, compare its 527.8 N output at 0.5 MPa against adjacent bores: the SDAD32 provides 345.6 N, whereas the SDAD50 delivers 824.7 N. For this 40 mm bore, the safe working load is roughly 317 N (about 60 percent of the 0.5 MPa figure), translating to a vertical lift capacity of approximately 26.9 kg with a 2:1 safety margin.
The through-rod geometry prevents rotation and enables dual-end actuation, but a standard cylinder cannot hold a load if air pressure drops or the valve centers—the piston will drift. For load holding without live pressure, integrate an external rod lock or pilot-operated check valve. This configuration specifies an 80 mm stroke, PT1/8 port, female M8x1.25 rod threads, and no piston magnet.
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 SDAD40X80 FAQ
The push and pull forces are identical because the rod exits both ends. It generates 527.8 N at 0.5 MPa and 738.9 N at 0.7 MPa in both directions. The theoretical maximum is 108 kgf at 1.0 MPa, which is the maximum operating pressure for this cylinder.
No, this specific SKU lacks the built-in piston magnet, so it cannot trigger reed or electronic switches. You would need to select the -S option code variant to enable sensor functionality along the body grooves. The through-rod still allows mechanical dogs to be mounted on the opposite end for physical detection.
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