Airtac SDAD Double Rod Slim Cylinder SDAD50X25S
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD50X25S is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø50mm bore, 25mm 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.
- BoreØ50 mm
- Stroke25 mm
- Port sizePT1/4
- Acting typeDouble acting, double rod
- Rod threadM10×1.5 (F) / M18×1.5 (B)
- CushionFixed NBR bumper (both ends)
About the Airtac SDAD Double Rod Slim Cylinder SDAD50X25S
The AirTAC SDAD50X25S is a double-acting compact 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, delivering an equal push and pull force of 824.7 N at 0.5 MPa. This symmetric output is ideal for loads requiring consistent drive and return energy.
Equipped with a built-in piston magnet (-S), this unit supports AirTAC reed or electronic switches for end-position sensing. The short body design drastically reduces axial mounting depth compared to conventional cylinders. It uses a fixed NBR bumper at each end to decelerate the stroke, and the 20 mm rod resists twisting during operation.
Airtac SDAD Double Rod Slim Cylinder SDAD50X25S Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD50X25S |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 mm |
| Acting type | Double acting, rod both ends |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 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 (Ø50mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 825 N |
| 0.7 MPa | 1155 N |
| Max (@1.0 MPa) | 168 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 SDAD50X25S
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 50 | Bore size in mm. |
| ×25 | 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 SDAD50X25S Is Used
Symmetric Transfer
Drives a gripper on the front rod while the rear rod carries a switch dog, maintaining 824.7 N of equal force for balanced part shuttling.
Anti-Twist Press
The 20 mm through-rod resists rotational torque during a 25 mm pressing cycle, keeping the tool face perfectly aligned.
Vertical Lift Stop
Raises a 42 kg payload with a 2:1 margin, using the fixed NBR bumper to absorb the shock at the top of the stroke.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD50X25S the Right Cylinder?
When sizing this 50 mm bore, compare it with its neighbors: the SDAD40 provides 527.8 N at 0.5 MPa, while the SDAD63 offers 1401.5 N at 0.5 MPa. For this model, the 824.7 N output at 0.5 MPa yields a safe working load of roughly 495 N (about 60 percent of capacity) and a vertical lift capacity of approximately 42 kg with a 2:1 safety margin. The through-rod geometry prevents rotation and permits mounting a tool on one end with a sensing dog on the opposite side.
This configuration features a 25 mm stroke, a PT1/4 port, female M10x1.5 rod-end threads, and operates at 30-500 mm/s. Remember that a plain cylinder drifts when air is lost or the valve centers; the fixed bumper only decelerates near stroke end and does not act as a lock. For 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 SDAD50X25S FAQ
The force is equal in both directions due to the double-rod design. It provides 824.7 N at 0.5 MPa, 1154.5 N at 0.7 MPa, and a theoretical maximum of 168 kgf at 1.0 MPa.
Yes, the -S suffix indicates a built-in piston magnet. You can mount AirTAC reed or electronic switches directly into the body sensor grooves to detect end positions.
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Standard models usually ship in 3-4 days.
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