
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X30B is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm bore, 30mm 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 SDAD40X30B is a double-acting, double-rod compact cylinder featuring a 40 mm bore and 30 mm stroke. Because the piston rod exits both ends, the annular areas match perfectly, yielding 527.8 N of force at 0.5 MPa in both directions. This symmetric thrust is ideal for balanced actuation. The short riveted body drastically reduces axial mounting depth compared to standard bodies.
This specific SKU includes male M14x1.5 threaded rods on both ends for direct tool mounting. A fixed NBR bumper decelerates the piston near stroke ends, operating effectively between 30 and 500 mm/s. Note that this variant lacks a piston magnet, so position sensing is not supported without the -S option. Operating pressure ranges from 0.15 to 1.0 MPa.
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X30B |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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.
| 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.
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 jaws with equal 527.8 N extend and retract forces, ensuring centered clamping on precision machined parts.
Mounts a pusher on the front male rod and a tracking dog on the rear, utilizing the anti-rotation through-rod for stable part transfer.
When sizing this unit, consider the neighboring bores: the SDAD32 provides 345.6 N at 0.5 MPa, while the larger SDAD50 offers 824.7 N. The through-rod geometry inherently resists twisting, allowing you to drive a tool on one end while leaving the opposite end free for mechanical synchronization.
Confirm the 40 mm bore, 30 mm stroke, PT1/8 port, and male M14x1.5 rod threads suit your fixture. Remember that a plain cylinder drifts when air is lost or the valve centers; the fixed bumper only softens end impacts. For secure load holding without live pressure, integrate an external rod lock or pilot-operated check valve.
Quick checklist
The double-rod design provides equal force in both directions: 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.
No, this specific SKU does not have a piston magnet. You must select the -S variant to use AirTAC reed or electronic switches. However, the male M14x1.5 threaded rods on both ends allow direct mechanical mounting of external targets or dogs.
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