Airtac SDAD Double Rod Slim Cylinder SDAD50X40SB
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD50X40SB is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø50mm bore, 40mm 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
- Stroke40 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 SDAD50X40SB
The AirTAC SDAD50X40SB is a double-acting compact 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 824.7 N at 0.5 MPa. This symmetric output is highly advantageous for driving loads that must remain balanced in both directions.
This specific configuration includes a built-in piston magnet for position sensing alongside male M18x1.5 rod threads on both ends. The short body design minimizes axial footprint, while the fixed NBR bumpers absorb end-of-stroke shock. Operating between 30-500 mm/s, it uses a PT1/4 port and handles a theoretical maximum of 168 kgf at 1.0 MPa.
Airtac SDAD Double Rod Slim Cylinder SDAD50X40SB Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD50X40SB |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 40 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 SDAD50X40SB
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 50 | Bore size in mm. |
| ×40 | 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 SDAD50X40SB Is Used
Symmetrical Transfer Jaws
Drives opposing gripper jaws with 824.7 N of equal force in both directions, ensuring perfectly centered part transfers without rotational twist.
Balanced Vertical Lifters
Lifts approximately 42 kg of vertical payload using the dual-end male M18x1.5 rods, maintaining stable guidance throughout the 40 mm stroke.
Dual-End Tooling Carriages
Mounts a forming tool on one rod end and a position dog on the other, leveraging the anti-rotation through-rod for precise 50 mm bore actuation.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD50X40SB the Right Cylinder?
When sizing this unit, consider the neighboring bores: stepping down to the SDAD40 yields 527.8 N at 0.5 MPa, while stepping up to the SDAD63 provides 1401.5 N at 0.5 MPa. Based on the 824.7 N output at 0.5 MPa, a safe working load is approximately 495 N, which translates to a vertical lift capacity of about 42 kg with a 2:1 safety margin. The through-rod geometry prevents twisting and permits mounting a tool on one end and a dog on the opposite side.
This model is configured with the -S magnet for AirTAC reed or electronic switches and the -B option for male M18x1.5 rod threads at both ends. Remember that the fixed NBR bumper only decelerates the stroke near the ends and does not function as a lock. If your application requires load holding without live air pressure, you must integrate an external rod lock or a pilot-operated check valve to prevent drifting.
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 SDAD50X40SB FAQ
The double-rod design provides equal force in both directions: 824.7 N at 0.5 MPa and 1154.5 N at 0.7 MPa. The theoretical maximum is 168 kgf at 1.0 MPa, with a proof pressure of 1.5 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 and acts as neither a brake nor a lock. For load holding, use an external rod lock or pilot-operated check valve.
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