Airtac SDAD Double Rod Slim Cylinder SDAD50X70SB
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD50X70SB is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø50mm bore, 70mm 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
- Stroke70 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 SDAD50X70SB
The AirTAC SDAD50X70SB is a compact double-acting cylinder featuring a 50 mm bore and 70 mm stroke. Because the piston rod exits both ends of the riveted body, the annular area remains identical on extend and retract, yielding an equal push and pull force of 824.7 N at 0.5 MPa. This symmetric thrust is ideal for balanced actuation tasks.
Equipped with a built-in magnet (-S) for reed or electronic switches, this unit also features male-thread rods (-B) measuring M18x1.5 on both ends. The short body design minimizes axial footprint, while a fixed NBR bumper decelerates the stroke ends. Operating speed spans 30-500 mm/s within a 0.15-1.0 MPa pressure range.
Airtac SDAD Double Rod Slim Cylinder SDAD50X70SB Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD50X70SB |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 70 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 SDAD50X70SB
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 50 | Bore size in mm. |
| ×70 | 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 SDAD50X70SB Is Used
Symmetric Gripper Actuation
Drives opposing gripper jaws with 824.7 N of equal force in both directions, ensuring perfectly balanced clamping pressure on delicate workpieces.
Dual-End Machining Station
Mounts a cutting tool on one male M18x1.5 rod end and a position dog on the other, leveraging the anti-rotation through-rod for precise milling operations.
Vertical Lift Platform
Raises and lowers a 42 kg payload vertically, utilizing the matched extend and retract thrust to prevent gravitational drift during descent.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD50X70SB the Right Cylinder?
When sizing this 50 mm bore, consider the neighboring options: scaling down to SDAD40 provides 527.8 N at 0.5 MPa, whereas stepping up to SDAD63 yields 1401.5 N. The computed safe working load for this model is roughly 495 N (about 60 percent of the 824.7 N figure), allowing a vertical lift of approximately 42 kg with a 2:1 safety margin.
The through-rod geometry prevents twisting and permits driving a tool on one end while mounting a dog on the opposite side. Note that a plain cylinder drifts when air is lost or the valve centers, as the fixed bumper only decelerates near stroke end; employ an external rod lock or pilot-operated check valve for load holding. This configuration includes the PT1/4 port, the -S magnet, and male M18x1.5 rod 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 SDAD50X70SB FAQ
The push and pull forces are identical because the rod occupies both chambers. It generates 824.7 N at 0.5 MPa and 1154.5 N at 0.7 MPa, with a theoretical maximum of 168 kgf at 1.0 MPa. The maximum operating pressure is 1.0 MPa.
No, the piston will drift if air is lost or the valve is centered. The fixed NBR bumper only decelerates the stroke near the end of travel and does not act as a brake. For load holding, you must install an external rod lock or a pilot-operated check valve.
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