Airtac SDAD Double Rod Slim Cylinder SDAD50X55SB
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD50X55SB 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 SDAD50X55SB
The AirTAC SDAD50X55SB 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 remains constant, generating an identical 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 directions.
Equipped with a built-in magnet (-S) for reed or electronic switches and male M18x1.5 threads (-B) on both 20 mm rods, it allows you to mount a tool on one end and a position dog on the opposite. The short body design saves axial depth, while the fixed NBR bumpers absorb end-of-stroke shock without acting as a lock.
Airtac SDAD Double Rod Slim Cylinder SDAD50X55SB Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD50X55SB |
|---|---|
| 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 SDAD50X55SB
| 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 SDAD50X55SB Is Used
Symmetric Transfer Arms
Drives a pick-and-place arm from one end while the opposite rod end mounts a physical dog, utilizing the 824.7 N equal force for balanced bi-directional movement.
Vertical Lift Stations
Raises and lowers a 42 kg payload with a 2:1 safety margin, relying on the male M18x1.5 threads for secure tool mounting and the through-rod to resist twisting.
Dual-End Sealing Press
Compresses a package on the primary stroke while triggering an electronic switch via the built-in magnet on the rear rod exit to synchronize the next station.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD50X55SB the Right Cylinder?
When sizing this 50 mm bore, compare its 824.7 N output at 0.5 MPa against neighboring models. Stepping down to the SDAD40 yields 527.8 N, whereas moving up to the SDAD63 provides 1401.5 N. For your current load, a safe working figure is roughly 495 N (about 60 percent of the 0.5 MPa rating), translating to a vertical lift capacity near 42 kg with a 2:1 safety margin.
The through-rod geometry prevents twist during operation and enables dual-end actuation. Remember that a standard cylinder drifts if air pressure drops or the valve centers; the fixed bumper only decelerates the stroke end. For secure load holding without live pressure, integrate an external rod lock or a pilot-operated check valve. This configuration includes the -S magnet and -B male M18x1.5 rod threads, operating via a PT1/4 port.
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 SDAD50X55SB FAQ
The push and pull forces are identical because the double-rod design creates equal annular areas. It generates 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 maximum operating pressure is 1.0 MPa.
Yes, the through-rod exits both sides with male M18x1.5 threads, allowing you to drive a tool on one end and mount a dog or sensor target on the other. The built-in magnet supports reed or electronic switches for position feedback.
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