
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD25X75SB is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø25mm 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.
The AirTAC SDAD25X75SB 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 on extend and retract, yielding equal push and pull force of 206.2 N at 0.5 MPa. This symmetry prevents twisting and ensures stable motion for symmetric loads.
This specific configuration includes a built-in piston magnet for position sensing and male M8x1.25 threads on both rod ends. The short body design saves axial mounting depth, while the fixed NBR bumper decelerates the piston at stroke ends. Operating speed ranges from 30-500 mm/s across a 0.15-1.0 MPa pressure range.
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD25X75SB |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø25 mm |
| Stroke | 75 mm |
| Acting type | Double acting, rod both ends |
| Port size | M5×0.8 |
| Rod end thread | M5×0.8 female / M8×1.25 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.
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 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.
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 25 | 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).
Drives opposing gripper fingers with equal 206.2 N force, using the through-rod to prevent jaw twist during part clamping.
Mounts a diverter flap on one rod end and a position dog on the other, saving axial space along the conveyor frame.
Lifts small platens vertically with matched extend and retract forces, avoiding sag on the return stroke.
When sizing this unit, compare its 206.2 N output at 0.5 MPa with neighboring bores. Stepping down to the SDAD20 provides 131.9 N, while stepping up to the SDAD32 offers 345.6 N. This makes the 25mm bore the optimal middle ground for medium-duty anti-rotation tasks. The dual-end through-rod allows driving a tool on one side and mounting a dog on the opposite end.
This model is configured with the -S magnet for AirTAC reed or electronic switches and the -B option for male M8x1.25 rod threads at both ends. The air port is M5x0.8. Note that a plain cylinder does not hold position on air loss; the piston drifts and the fixed bumper only decelerates near stroke end. For load holding without live pressure, use an external rod lock or pilot-operated check valve.
Quick checklist
The double-rod design provides equal force in both directions: 206.2 N at 0.5 MPa, 288.6 N at 0.7 MPa, and a theoretical maximum of 42 kgf at 1.0 MPa.
The through-rod resists rotation and allows tool mounting on both ends. This SB variant includes a built-in magnet for reed or electronic switches and features male M8x1.25 threads on both rod ends for secure fixture attachment.
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