Airtac SDAD Double Rod Slim Cylinder SDAD25X85B
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD25X85B is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø25mm bore, 85mm 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
- Stroke85 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 SDAD25X85B
The AirTAC SDAD25X85B is a compact double-acting cylinder featuring a through-rod that exits both ends of the riveted body. Because the rod occupies each chamber equally, the annular area matches on extend and retract, delivering an identical push and pull force of 206.2 N at 0.5 MPa. This symmetric output is essential for mechanisms requiring consistent kinetic energy in both travel directions.
Equipped with male M8x1.25 thread on both rod ends, this 85 mm stroke unit saves axial mounting depth compared to standard profile bodies. The fixed NBR bumper decelerates the piston near stroke end but does not act as a lock. Since this SKU lacks the -S magnet option, it cannot host reed or electronic switches.
Airtac SDAD Double Rod Slim Cylinder SDAD25X85B Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD25X85B |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø25 mm |
| Stroke | 85 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 SDAD25X85B
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 25 | Bore size in mm. |
| ×85 | 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 SDAD25X85B Is Used
Symmetric Transfer Chuck
Grips and releases parts with 206.2 N of equal force in both directions, ensuring no bias during high-cycle pick-and-place operations.
Anti-Rotation Guide Shaft
Uses the twin through-rods to resist twisting moments while mounting a male-threaded tooling head on one end and a mechanical stop on the other.
Vertical Lift Stopper
Lifts a 10.5 kg payload vertically with a 2:1 safety margin, relying on the fixed NBR bumper to absorb the kinetic energy at the 85 mm stroke limit.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD25X85B the Right Cylinder?
When sizing this unit, compare its 206.2 N @0.5 MPa output with adjacent bores: the SDAD20 provides 131.9 N, while the SDAD32 offers 345.6 N. A practical safe working load is roughly 124 N (about 60% of the 0.5 MPa figure), which translates to a vertical lift capacity of approximately 10.5 kg with a 2:1 safety margin. The through-rod geometry prevents twisting and permits driving a tool on one end while mounting a dog on the opposite side.
Confirm the 25 mm bore, 85 mm stroke, and M5x0.8 air port suit your manifold. This specific SKU uses male M8x1.25 rod threads and includes no piston magnet. Remember that a standard cylinder drifts when air is lost or the valve centers; the bumper only decelerates near the end. For strict load holding without live pressure, install an external rod lock or pilot-operated check valve.
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 SDAD25X85B FAQ
The double-rod design provides equal force in both directions: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa. The theoretical maximum is 42 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
Yes, the through-rod exits both sides with male M8x1.25 threads, allowing you to drive a tool on one end and mount a dog or secondary mechanism on the other. This geometry also provides excellent resistance to twisting.
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