Airtac SDAD Double Rod Slim Cylinder SDAD40X80SB
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X80SB 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 SDAD40X80SB
The AirTAC SDAD40X80SB is a compact double-acting pneumatic cylinder featuring a through-rod that exits both ends of the riveted body. Because the rod occupies each chamber equally, the annular area remains constant, delivering an identical push and pull force of 527.8 N at 0.5 MPa. This symmetric output is ideal for balancing loads without favoring one direction.
This specific configuration includes a built-in piston magnet for AirTAC reed or electronic switches, along with male M14x1.5 rod threads on both ends. The short body design minimizes axial footprint, while fixed NBR bumpers absorb end-of-stroke shock. Operating pressure spans 0.15 to 1.0 MPa, and the 16 mm rods rotate minimally during transit.
Airtac SDAD Double Rod Slim Cylinder SDAD40X80SB Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X80SB |
|---|---|
| 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 SDAD40X80SB
| 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 SDAD40X80SB Is Used
Symmetric Transfer Jaws
Drives gripper jaws from both ends to maintain equal clamping pressure during component transfers, utilizing the 527.8 N bidirectional force.
Balanced Lift Stations
Lifts platens vertically without rod twist, keeping the platform level while handling a safe working load of approximately 317 N.
Dual-End Tooling Carriages
Mounts a cutting blade on one rod end and a limit switch dog on the opposite end to synchronize machining operations within tight spaces.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X80SB the Right Cylinder?
When sizing this model, consider the neighboring bores: the SDAD32 yields 345.6 N at 0.5 MPa, while the SDAD50 provides 824.7 N at 0.5 MPa. The 40 mm bore sits perfectly between them, offering a computed safe working load of roughly 317 N (about 60 percent of the 0.5 MPa figure) and a vertical lift capacity near 26.9 kg with a 2:1 safety margin.
The through-rod geometry prevents twisting and allows mounting a tool on one end and a position dog on the opposite side. Remember that a standard cylinder drifts when air is lost or the valve centers; utilize an external rod lock or pilot-operated check valve for secure load holding. This unit features an 80 mm stroke, PT1/8 porting, the -S magnet, and male -B rods.
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 SDAD40X80SB FAQ
The double-rod design provides equal force in both directions: 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.
No, a standard cylinder drifts when air pressure is lost or the valve is centered. The fixed NBR bumper only decelerates the stroke near the end points. For load holding, you must add an external rod lock or a pilot-operated check valve.
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