Airtac SDAD Double Rod Slim Cylinder SDAD50X40
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD50X40 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 SDAD50X40
The AirTAC SDAD50X40 is a compact double-acting cylinder featuring a 50 mm bore and 40 mm stroke. Its through-rod design exits both ends of the riveted body, ensuring the annular area remains identical on extend and retract. This geometry yields exactly 824.7 N of push and pull force at 0.5 MPa, making it highly predictable for symmetric loads.
A 20 mm rod on each end provides rigid resistance to twisting. The short body footprint saves axial mounting depth compared to standard round-body cylinders, while end-of-stroke deceleration relies strictly on a fixed NBR bumper. This specific SKU lacks a piston magnet, so position sensing is not supported without upgrading to an -S variant.
Airtac SDAD Double Rod Slim Cylinder SDAD50X40 Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD50X40 |
|---|---|
| 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 SDAD50X40
| 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 SDAD50X40 Is Used
Gripper Jaw Actuation
Drives opposing gripper jaws where the equal 824.7 N extend and retract force prevents twisting during part clamping on machining centers.
Dual-End Transfer
Mounts a work tool on one rod end and a cam dog on the opposite end, allowing external mechanical tracking without interfering with the primary 40 mm stroke motion.
Balanced Vertical Lift
Lifts 42 kg payloads vertically with a 2:1 safety margin, leveraging the through-rod geometry to resist side-load sagging during elevation cycles.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD50X40 the Right Cylinder?
When sizing this 50 mm bore model, consider the SDAD40 which outputs 527.8 N at 0.5 MPa, or step up to the SDAD63 providing 1401.5 N at 0.5 MPa. The SDAD50X40 hits a reliable middle ground, offering a safe working load around 495 N and a vertical lift capacity near 42 kg with a 2:1 safety margin.
This unit features a PT1/4 air port and female M10x1.5 rod-end threads on both sides. Remember that a plain cylinder drifts if air pressure drops or the valve centers; the fixed bumper only slows the stroke end and will not hold the load. For secure positioning 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 SDAD50X40 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.
Yes, the through-rod exits both sides with female M10x1.5 threads, allowing you to drive a tool on one end and mount a dog on the other. Note this SKU lacks a magnet for switches; you would need the -S variant for electronic or reed sensing.
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