Airtac SDAD Double Rod Slim Cylinder SDAD40X55B
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X55B is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm 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.
- BoreØ40 mm
- Stroke55 mm
- Port sizePT1/8
- Acting typeDouble acting, double rod
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionFixed NBR bumper (both ends)
About the Airtac SDAD Double Rod Slim Cylinder SDAD40X55B
The AirTAC SDAD40X55B 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, giving 527.8 N of push and pull force at 0.5 MPa. This symmetric output is ideal for balanced tooling.
This specific SKU includes male M14x1.5 threads on both 16 mm rod ends, allowing direct mounting of fixtures. The short body design minimizes axial footprint, while fixed NBR bumpers absorb end-of-stroke shock. Note this version lacks a piston magnet, so position sensing is not supported.
Airtac SDAD Double Rod Slim Cylinder SDAD40X55B Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X55B |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 55 mm |
| Acting type | Double acting, rod both ends |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 (Ø40mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 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 SDAD40X55B
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 40 | 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 SDAD40X55B Is Used
Gripper Synchronization
Drives opposing gripper jaws via the dual male M14x1.5 rod ends, ensuring perfectly symmetric clamping force during component transfer.
Dual-End Transfer
Pushes a part on the forward stroke while simultaneously actuating a release mechanism on the rear side, maximizing cycle efficiency.
Anti-Rotation Pressing
Applies 527.8 N of equal force to press bearings without twisting, utilizing the inherent torsional resistance of the through-rod.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X55B the Right Cylinder?
When sizing this 40 mm bore, compare its 527.8 N output at 0.5 MPa against neighboring bores. Dropping to SDAD32 yields 345.6 N, whereas stepping up to SDAD50 provides 824.7 N. A safe working load is roughly 317 N, allowing a vertical lift of about 26.9 kg with a 2:1 margin.
The through-rod geometry prevents twisting and permits driving a tool on one end with a dog on the opposite. Remember that a plain cylinder drifts when air is lost; use an external rod lock or pilot-operated check valve for load holding. This configuration features a 55 mm stroke, PT1/8 port, male M14x1.5 rods, and no magnet.
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 SDAD40X55B FAQ
The double-rod design provides equal force in both directions: 527.8 N at 0.5 MPa and 738.9 N at 0.7 MPa. The theoretical maximum is 108 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
No, this specific SKU lacks a piston magnet and cannot accept reed or electronic switches. You would need the -S variant for sensing, though the dual male M14x1.5 rod ends still allow external mechanical dogs.
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