The AirTAC SDAT double acting multi-position cylinder SDAT25X25X15S is a genuine COMPACT duplex cylinder (Ø25mm bore) built from two stacked piston sections of 0 mm and 0 mm. Switching the two chambers gives fixed rod stops at 0, 0 and 0 mm — three repeatable positions from a single actuator.
SDAT25X25X15S is an AirTAC double-acting compact duplex cylinder that halts at three repeatable points: retracted, 25 mm, and 40 mm. Both air chambers are switched in sequence to pick a position, letting a single actuator deliver what would otherwise need two cylinders or an external stopper. Output equals a single SDA of this bore - 245.4 N push at 0.5 MPa - because the duplex layout adds positions, never thrust.
A magnet comes built in, so reed or electronic AirTAC switches in the body grooves can verify every stop. The port and female rod thread are both M5x0.8, stroke is adjustable only through the fixed 25/15 mm section split, and a fixed NBR bumper takes end-of-travel shock; it is not a tunable cushion.
| Model | Airtac SDAT double acting multi-position cylinder SDAT25X25X15S |
|---|---|
| Series | SDAT compact duplex (multi-position) cylinder |
| Bore size | Ø25 mm |
| Stroke 1 / Stroke 2 | 0 / 0 mm |
| Fixed positions | 0 / 0 / 0 mm |
| Port size | M5×0.8 |
| Rod end thread | M5×0.8 F / M8×1.25 male (B) |
| Acting type | Double acting, duplex |
|---|---|
| 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 |
| Stroke rule | Stroke 1 + Stroke 2 ≤ standard max |
Stroke 1 + Stroke 2 must not exceed the standard stroke maximum for the bore. Confirm the exact stop sequence against the AirTAC SDAT datasheet before wiring the valves.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 kgf | |
Force is set by the single piston area (same as an SDA of this bore) — the duplex design adds positions, not thrust. Actual usable force is lower than theoretical.
| SDAT | Compact duplex (multi-position) cylinder. |
|---|---|
| 25 | Bore size in mm. |
| ×0 | Stroke 1 (first section) in mm. |
| ×0 | Stroke 2 (second section) in mm. |
| S / B | S = magnet; B = male-thread rod (both optional). |
Thread: PT standard. Related: SDAW (duplex-end multi-position), SDA (single position), SDAD (double rod), SDAJ (adjustable stroke).
Off-spec cartons get a soft 25 mm nudge or the full 40 mm push clear of the belt, chosen purely by valve state on this 245.4 N bore 25 actuator.
After a forming cut, the rod advances 25 mm to strip the part and 40 mm to eject it clear of the die - one duplex body instead of two separate cylinders.
At a case-packing station the stop pin presents three faces (0/25/40 mm) so different carton heights queue against the correct one each cycle.
Size by force first: bore 25 gives 245.4 N push at 0.5 MPa, one step above bore 20 (157.1 N) and below bore 32 (402.1 N). Reaching 0, 25 and 40 mm takes two solenoid valves, one per chamber. The position only holds while pressure is present; with valves centred or air lost the rod can drift, so add an external locking device if the load must stay put unpowered. Verify bore 25, strokes 25 and 15, the M5x0.8 port, the S magnet and female rod thread against the datasheet.
Quick checklist
The rod halts at 0, 25 and 40 mm. Output equals a single SDA bore 25 piston: 245.4 N push and 206.2 N pull at 0.5 MPa, 343.6 N push at 0.7 MPa, maximum 50 kgf push at 1.0 MPa. Cycle speed is 30-500 mm/s.
No. SDAT stacks two piston sections to create extra positions, so the force stays that of one piston of the stated bore. To hold a load with no air pressure, fit an external locking unit - the stops need live pressure, and the fixed NBR bumper only softens the end of stroke.
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