Airtac SDAD Double Rod Slim Cylinder SDAD50X55
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD50X55 is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø50mm bore, 55mm 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
- Stroke55 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 SDAD50X55
The AirTAC SDAD50X55 is a 50mm bore, 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 symmetry is ideal for driving loads that require consistent momentum in both strokes.
The 20mm diameter rod resists twisting during operation and allows a tool to mount on one end while a dog or fixture attaches to the opposite side. End-of-stroke energy is managed by a fixed NBR bumper rather than an adjustable air cushion, and the short body footprint saves axial mounting depth where space is tight. This specific SKU lacks a piston magnet, so position sensing is not supported without upgrading to the -S variant.
Airtac SDAD Double Rod Slim Cylinder SDAD50X55 Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD50X55 |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 55 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 SDAD50X55
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 50 | Bore size in mm. |
| ×55 | 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 SDAD50X55 Is Used
Symmetric Transfer Arms
Drives a pick-and-place arm where the 824.7 N equal push and pull force ensures stable acceleration and deceleration of heavy billets across a 55mm stroke.
Anti-Rotation Guiding
Lifts and lowers a precision machining fixture using the 20mm through-rod to resist twisting, maintaining strict parallelism without external linear bearings.
Dual-End Ejector
Mounts a forming tool on the front rod and a mechanical dog on the rear, using the compact riveted body to fit within a tight 50mm bore press assembly.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD50X55 the Right Cylinder?
When sizing this model against its neighbours, the SDAD40 provides 527.8 N at 0.5 MPa, while the larger SDAD63 offers 1401.5 N at 0.5 MPa. The 824.7 N output here yields a safe working load of roughly 495 N at a 60 percent derating, or a vertical lift capacity of about 42 kg with a 2:1 safety margin. The PT1/4 port and 55mm stroke fit mid-range pneumatic setups perfectly.
The through-rod geometry prevents rotation and enables dual-end actuation, but a plain cylinder drifts when air is lost or the valve centres—the fixed bumper only decelerates near stroke end, so add an external rod lock or pilot-operated check valve for load holding. This base configuration has female M10x1.5 rod-end threads and no magnet; choose the -S option if you need reed or electronic switches, or the -B option for male M18x1.5 threads.
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 SDAD50X55 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. The 50mm bore uses a PT1/4 air port.
No, this specific SKU does not have a piston magnet. You must select the SDAD50X55S variant to use AirTAC reed or electronic switches in the body sensor grooves. The through-rod still allows dual-end mounting of tools and dogs.
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