Airtac SDAD Double Rod Slim Cylinder SDAD25X70S
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD25X70S is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø25mm bore, 70mm 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
- Stroke70 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 SDAD25X70S
The AirTAC SDAD25X70S is a compact double-acting cylinder featuring a 10 mm piston rod protruding from both ends of its riveted body. Because the rod occupies each chamber equally, the annular area remains constant, yielding identical push and pull forces of 206.2 N at 0.5 MPa. This symmetric output is highly advantageous for driving loads that must remain balanced throughout the entire cycle.
Equipped with a built-in magnet (-S), this unit reads position via reed or electronic switches seated in the body grooves. The 70 mm stroke operates at speeds between 30-500 mm/s, while end-of-travel kinetic energy is absorbed by a fixed NBR bumper rather than an adjustable cushion. Its shallow footprint saves axial mounting depth, and the through-rod geometry inherently resists twisting during actuation.
Airtac SDAD Double Rod Slim Cylinder SDAD25X70S Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD25X70S |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø25 mm |
| Stroke | 70 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 SDAD25X70S
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 25 | Bore size in mm. |
| ×70 | 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 SDAD25X70S Is Used
Gripper Jaw Sync
Drives opposing gripper fingers with equal 206.2 N force in both directions, ensuring parts are clamped securely without rotational twist during robotic pick and place.
Dual-End Transfer
Mounts a pusher plate on the front rod and a magnetic dog on the rear, allowing an external reed or electronic switch to confirm the 70 mm stroke position independently.
Balanced Lift Station
Lifts light platens vertically where the symmetric annular area prevents sagging, handling a safe working load of roughly 124 N within a shallow machine envelope.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD25X70S the Right Cylinder?
When sizing this 25 mm bore, compare its 206.2 N @0.5 MPa capacity against adjacent models: the SDAD20 provides 131.9 N, whereas the SDAD32 offers 345.6 N. A safe working load is roughly 124 N (about 60% of the 0.5 MPa figure), allowing a vertical lift of approximately 10.5 kg with a 2:1 safety margin. This specific configuration includes a 70 mm stroke, M5x0.8 port, and female M5x0.8 rod-end threads on both ends.
The dual-end through-rod prevents rotation and permits mounting a tool on one side while tracking position with a switch on the opposite side. Remember that a plain cylinder drifts when air pressure is lost or the valve centers; the NBR bumper only decelerates near stroke end and will not hold the load. For secure load holding without live pressure, integrate 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 SDAD25X70S FAQ
The push and pull forces are identical because the rod exits both ends. It generates 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa, with a theoretical maximum of 42 kgf at 1.0 MPa. The maximum operating pressure is 1.0 MPa.
No, the piston will drift if air is lost or the valve is centered. The fixed NBR bumper only decelerates the stroke near the end points; it does not function as a brake. For load holding, you must add an external rod lock or a pilot-operated check valve.
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