Airtac SDAD Double Rod Slim Cylinder SDAD50X40B
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD50X40B 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 SDAD50X40B
The AirTAC SDAD50X40B 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 on extend and retract, yielding exactly 824.7 N of force at 0.5 MPa in each direction. This symmetric output is essential for tooling that must push and pull with equal authority.
This specific SKU includes male M18x1.5 thread on both 20 mm rod ends, allowing direct mounting of fixtures. The short body design minimizes axial footprint, while the internal NBR bumpers absorb end-of-stroke shock. Note this unit lacks a piston magnet, so position sensing is not supported without the -S option.
Airtac SDAD Double Rod Slim Cylinder SDAD50X40B Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD50X40B |
|---|---|
| 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 SDAD50X40B
| 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 SDAD50X40B Is Used
Symmetric Transfer Arms
Drives a pick-and-place arm requiring identical push and pull forces of 824.7 N to smoothly transfer 42 kg payloads without rotational deflection.
Dual-End Forming Station
Mounts a forming die on one male M18x1.5 rod end and a cam dog on the opposite end to trigger external mechanical stops during sheet metal work.
Guided Lift Platforms
Lifts heavy jigs vertically using the 20 mm through-rod to resist twist, taking advantage of the compact riveted body to save vertical space.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD50X40B the Right Cylinder?
When sizing this 50 mm bore, compare its 824.7 N @0.5 MPa output against adjacent models: the SDAD40 provides 527.8 N, while the SDAD63 offers 1401.5 N. For a safe working load, plan for roughly 495 N, which provides a 2:1 safety margin for lifting about 42 kg vertically. The through-rod geometry prevents twisting during operation and permits driving a tool on one end with a dog on the opposite side.
Confirm the 40 mm stroke falls within the 130 mm standard maximum. This variant uses PT1/4 ports and male M18x1.5 rod threads. Remember that a standard cylinder drifts when air pressure is lost or the valve centers; the fixed bumper only decelerates the stroke end. For 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 SDAD50X40B FAQ
The double-rod design provides equal force in both directions: 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.
No, this specific SKU does not have a piston magnet. You must select the -S option to use AirTAC reed or electronic switches for position detection.
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