Airtac SDAD Double Rod Slim Cylinder SDAD40X75S
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X75S is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm bore, 75mm 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
- Stroke75 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 SDAD40X75S
The AirTAC SDAD40X75S is a double-acting compact cylinder featuring a 40mm bore and a 75mm stroke. Because the piston rod exits both ends of the riveted body, the annular area remains identical in each chamber. This geometry ensures push force equals pull force, delivering exactly 527.8 N at 0.5 MPa in either direction. The through-rod design inherently resists twisting, providing stable linear motion for symmetric loads.
Equipped with a built-in magnet (-S), this unit supports AirTAC reed or electronic switches for end-of-stroke detection. End-of-travel deceleration relies on a fixed NBR bumper rather than an adjustable air cushion. Operating speed spans 30-500 mm/s, while the short body profile significantly reduces axial mounting depth compared to conventional round-body options.
Airtac SDAD Double Rod Slim Cylinder SDAD40X75S Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X75S |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 SDAD40X75S
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 SDAD40X75S Is Used
Gripper Jaw Actuation
Drives symmetric gripper jaws where equal push and pull forces of 527.8 N prevent twisting during part clamping.
Dual-End Transfer
Mounts a work tool on one rod end and a switch dog on the opposite end to synchronize transfer operations in tight spaces.
Vertical Lift Stops
Lifts 26.9 kg loads vertically with a 2:1 margin, relying on the fixed NBR bumper to decelerate the 75mm stroke at the end of travel.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X75S the Right Cylinder?
When sizing this model, compare its 527.8 N @0.5 MPa capacity against adjacent bores: the SDAD32 yields 345.6 N, and the SDAD50 provides 824.7 N. For this 40mm bore, a safe working load is roughly 317 N (about 60% 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 allows driving a tool on one end while mounting a dog on the opposite end for sensor actuation.
This configuration includes a female M8x1.25 rod-end thread, a 16mm rod diameter, and PT1/8 air ports. Note that a plain cylinder drifts when air is lost or the valve centers; the fixed bumper only decelerates near stroke end and never locks the load. For load holding without live pressure, install an external rod lock or 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 SDAD40X75S FAQ
The push and pull forces are identical because the rod occupies both chambers. It generates 527.8 N at 0.5 MPa and 738.9 N at 0.7 MPa. The theoretical maximum is 108 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
Yes, the through-rod resists rotation and allows mounting a tool on one end and a dog on the other. The included -S magnet works with AirTAC reed or electronic switches fitted into the body sensor grooves.
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