
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD25X30S is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø25mm 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 SDAD25X30S 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 an equal push and pull force of 206.2 N at 0.5 MPa. This symmetry prevents twisting during transit and allows you to drive a tool on one end while mounting a dog or switch on the opposite end.
Fitting a 25 mm bore into a short axial footprint saves valuable machine depth where larger profile bodies cannot fit. The piston rod measures 10 mm at each end, operating at speeds of 30-500 mm/s. End-of-stroke deceleration relies on a fixed NBR bumper rather than an adjustable air cushion, and the included S magnet supports AirTAC reed or electronic switches for position feedback.
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD25X30S |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø25 mm |
| Stroke | 30 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. |
| ×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 fingers with equal 206.2 N force in both directions, preventing jaw twist during high-speed pick and place tasks.
Mounts a pusher plate on one rod end and a position dog on the other, utilizing the 30 mm stroke to transfer small components between conveyors.
Secures delicate machined parts from both sides simultaneously, using the anti-rotation through-rod to maintain strict parallelism under 0.7 MPa.
When sizing this model, compare the output against adjacent bores: stepping down to SDAD20 provides 131.9 N at 0.5 MPa, while stepping up to SDAD32 yields 345.6 N at 0.5 MPa. Based on the 206.2 N output at 0.5 MPa, a safe working load is roughly 124 N, translating to a vertical lift capacity of about 10.5 kg with a 2:1 safety margin. This specific configuration includes the S magnet for sensing, a 30 mm stroke, and female M5x0.8 rod-end threads on both ends, supplied by an M5x0.8 air port.
The through-rod geometry resists rotation and enables dual-end mounting, but a plain cylinder will not hold a load if air pressure drops or the valve centers; the piston drifts and the fixed bumper only decelerates near the stroke end. 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: 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.
Yes, the S suffix indicates a built-in piston magnet. It works with AirTAC reed or electronic switches mounted in the body grooves, allowing you to sense position at either end of the 30 mm stroke.
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