
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD12X40B is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø12mm bore, 40mm 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 SDAD12X40B is a compact double-acting cylinder featuring a 12 mm bore and 40 mm stroke. Its through-rod design exits both ends of the riveted body, creating identical annular areas. This geometry ensures push and pull forces match exactly at 42.4 N for 0.5 MPa, yielding a safe working load around 25 N and a vertical lift capacity near 2.2 kg with a 2:1 margin.
Equipped with male M5x0.8 threads on both rod ends, this unit allows dual-end tool mounting while resisting twist. The short body profile minimizes axial footprint, and internal fixed NBR bumpers absorb end-of-stroke impacts across the 30-500 mm/s speed range.
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD12X40B |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø12 mm |
| Stroke | 40 mm |
| Acting type | Double acting, rod both ends |
| Port size | M5×0.8 |
| Rod end thread | M3×0.5 female / M5×0.8 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 50 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 | 42 N |
| 0.7 MPa | 59 N |
| Max (@1.0 MPa) | 9 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. |
|---|---|
| 12 | Bore size in mm. |
| ×40 | 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 42.4 N force, using the male M5x0.8 rod ends to maintain precise parallel clamping without twist.
Pushes delicate pins into electronics assemblies, relying on the short riveted body to fit within dense 12 mm bore tooling grids.
Mounts a pick head on one side and a cam dog on the other, leveraging the anti-rotation through-rod to index parts in confined assembly stations.
When sizing this 12 mm bore unit, stepping up to the SDAD16 increases output to 86.4 N at 0.5 MPa, while the SDAD12 sits at the bottom of the range. The through-rod prevents rotation, enabling a dog or secondary tool on the opposite end. This SKU uses male M5x0.8 rods and an M5x0.8 port, but lacks a piston magnet, so position sensing is unavailable.
Remember that a standard cylinder drifts when air pressure drops or the valve centers, as the fixed bumper only decelerates near stroke end rather than locking. For load holding without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
The double-rod design provides equal force in both directions: 42.4 N at 0.5 MPa, 59.4 N at 0.7 MPa, and a maximum theoretical output of 9 kgf at 1.0 MPa.
Yes, the through-rod exits both sides with male M5x0.8 threads, allowing you to drive a tool on one end while mounting a dog on the other. The design also resists rotational twist.
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