Airtac SDAD Double Rod Slim Cylinder SDAD25X55SB
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD25X55SB is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø25mm bore, 55mm 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.
- BoreØ25 mm
- Stroke55 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod
- Rod threadM5×0.8 (F) / M8×1.25 (B)
- CushionFixed NBR bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SDAD Double Rod Slim Cylinder SDAD25X55SB
The AirTAC SDAD25X55SB 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 in each direction, giving an equal push and pull force of 206.2 N at 0.5 MPa. This symmetric output is ideal for balancing loads without tweaking pressure regulators.
This specific configuration includes a built-in piston magnet for AirTAC reed or electronic switches and male M8x1.25 rod threads on both ends. The short body design drastically reduces axial mounting depth compared to standard round-body options. End-of-stroke deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion.
Airtac SDAD Double Rod Slim Cylinder SDAD25X55SB Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD25X55SB |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø25 mm |
| Stroke | 55 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.
Theoretical Output Force (Ø25mm)
| 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.
Model Code: Airtac SDAD Double Rod Slim Cylinder SDAD25X55SB
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 25 | Bore size in mm. |
| ×55 | 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).
Where the Airtac SDAD Double Rod Slim Cylinder SDAD25X55SB Is Used
Symmetrical Transfer Jig
Drives a pick-and-place arm on one end while the opposite rod end carries a dog for a reed switch, utilizing the 206.2 N equal force to balance the horizontal load.
Anti-Rotation Guide Pin
Pushes a locating pin into a fixture where twisting resistance is critical, relying on the through-rod to maintain alignment without external guides.
Dual-End Sealing Press
Mounts a male M8x1.25 sealing cap on one rod tip and an electronic switch dog on the other, ensuring precise 55 mm travel for carton flap closing.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD25X55SB the Right Cylinder?
When sizing this unit, consider the neighbouring bores: an SDAD20 provides 131.9 N at 0.5 MPa, while an SDAD32 offers 345.6 N. This SDAD25 yields a safe working load of roughly 124 N (about 60 percent of the 0.5 MPa figure) and can vertically lift approximately 10.5 kg with a 2:1 margin. The through-rod geometry prevents twisting and allows you to mount a tool on one end while tracking position with a switch on the opposite side.
Remember that a standard compact cylinder drifts when air is removed or the valve centers, as the NBR bumper only decelerates near the stroke end and acts as no lock. For load holding without live pressure, install an external rod lock or pilot-operated check valve. This model features a 25 mm bore, 55 mm stroke, M5x0.8 port, male M8x1.25 rod ends, and the S magnet option.
Quick checklist
- ✓ Need equal force both directions?
- ✓ Anti-rotation / dual-end mounting?
- ✓ Space for a rod that exits both ends
- ✓ Port/thread type (PT)
- ✓ Magnet (S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Leave clearance for the rod exiting both ends.
- check Avoid side load on either rod end.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac SDAD Double Rod Slim Cylinder SDAD25X55SB FAQ
The push and pull forces are equal because the rod exits both ends. It generates 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 maximum operating pressure is 1.0 MPa.
The through-rod provides anti-rotation resistance and allows you to mount tooling on one end while using the other end to trigger a reed or electronic switch. This specific model also features male M8x1.25 threads on both rod ends for easy fixture attachment.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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