Airtac SDAD Double Rod Slim Cylinder SDAD25X35S
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD25X35S is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø25mm bore, 35mm 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
- Stroke35 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 SDAD25X35S
The AirTAC SDAD25X35S is a compact double-acting cylinder featuring a 25mm bore and 35mm stroke, with piston rods exiting both ends of its short riveted body. Because a rod occupies each chamber, the annular area is identical on extend and retract, delivering an equal push and pull force of 206.2 N at 0.5 MPa. This symmetry is ideal for driving loads that require consistent kinetic energy in both travel directions.
The through-rod geometry inherently resists twisting, providing stable guidance without needing extra mechanical supports. Equipped with a built-in magnet (-S), this unit supports AirTAC reed or electronic switches via the body sensor grooves. End-of-stroke deceleration is handled by fixed NBR bumpers, which absorb shock but are not adjustable air cushions. Operating speed spans 30-500 mm/s across a 0.15-1.0 MPa pressure range.
Airtac SDAD Double Rod Slim Cylinder SDAD25X35S Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD25X35S |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø25 mm |
| Stroke | 35 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 SDAD25X35S
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 25 | Bore size in mm. |
| ×35 | 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 SDAD25X35S Is Used
Symmetric Transfer Chuck
Utilizes the 206.2 N equal bidirectional force to grip and release delicate wafers evenly without asymmetric acceleration.
Anti-Rotation Guide Arm
Exploits the through-rod torsional resistance to keep a measuring gauge perfectly aligned during 35mm horizontal extensions.
Dual-End Pick Place
Mounts a suction cup on the front rod and a magnetic switch dog on the rear to synchronize part handling and sensor feedback.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD25X35S the Right Cylinder?
When sizing this unit, compare the 206.2 N output at 0.5 MPa against its neighbors. Dropping to the SDAD20 reduces thrust to 131.9 N, while stepping up to the SDAD32 yields 345.6 N. Based on the 0.5 MPa rating, a safe working load is roughly 124 N (about 60 percent capacity), translating to a vertical lift capability of approximately 10.5 kg with a 2:1 safety margin. This specific configuration includes the -S magnet for sensing and female M5x0.8 rod-end threads on both ends, supplied by an M5x0.8 air port.
The dual-end shaft allows you to mount a work tool on one side and a position dog on the opposite end simultaneously. Remember that a standard cylinder does not hold position if air pressure drops or the valve centers; the piston will drift. For load-holding security without live pressure, integrate an external rod lock or a pilot-operated check valve. Furthermore, the fixed NBR bumpers only decelerate near stroke end and do not act as a braking lock.
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 SDAD25X35S FAQ
The push and pull forces are equal because of the double-rod design. It generates 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa in both directions. The theoretical maximum is 42 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
Yes. The through-rod extends from both ends, allowing you to drive a tool on one side while mounting a dog for a reed or electronic switch on the opposite side. The built-in magnet (-S) enables position detection via the body grooves.
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