Airtac SDAD Double Rod Slim Cylinder SDAD20X80SB
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD20X80SB is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø20mm bore, 80mm 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.
- BoreØ20 mm
- Stroke80 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod
- Rod threadM4×0.7 (F) / M6×1.0 (B)
- CushionFixed NBR bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SDAD Double Rod Slim Cylinder SDAD20X80SB
The AirTAC SDAD20X80SB is a compact double-acting cylinder featuring an 8 mm through-rod exiting both ends of its short riveted body. Because the rod occupies both chambers, the annular area is identical on extend and retract, yielding equal push and pull force of 131.9 N at 0.5 MPa. This symmetry is ideal for driving loads that must move with consistent dynamics in both directions.
Equipped with a built-in magnet (-S) for AirTAC reed or electronic switches and male M6x1.0 rod threads (-B) on both ends, this 80 mm stroke unit maximizes mounting versatility. The through-rod geometry inherently resists twisting, allowing you to attach a work tool on one side and a position dog on the opposite side simultaneously.
Airtac SDAD Double Rod Slim Cylinder SDAD20X80SB Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD20X80SB |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø20 mm |
| Stroke | 80 mm |
| Acting type | Double acting, rod both ends |
| Port size | M5×0.8 |
| Rod end thread | M4×0.7 female / M6×1.0 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 90 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 (Ø20mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 132 N |
| 0.7 MPa | 185 N |
| Max (@1.0 MPa) | 27 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 SDAD20X80SB
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 20 | Bore size in mm. |
| ×80 | 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 SDAD20X80SB Is Used
Symmetrical Transfer Chuck
Grips delicate wafers on the male M6 rod end while maintaining identical 131.9 N clamping force during both extension and retraction to prevent part damage.
Dual-End PCB Shuttle
Uses the anti-rotation through-rod to push a carrier on one side while a position dog on the opposite end triggers an electronic switch for precise 80 mm travel.
Profile Alignment Gate
Deploys a guiding flap from the short riveted body where space is restricted, relying on the fixed NBR bumper to absorb the end-of-stroke shock consistently.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD20X80SB the Right Cylinder?
When sizing this 20 mm bore model, the adjacent SDAD16 provides 86.4 N at 0.5 MPa, while stepping up to the SDAD25 offers 206.2 N. The 131.9 N output here gives a safe working load of roughly 79 N (about 60 percent of capacity) and a vertical lift capability near 6.7 kg with a 2:1 safety margin. Choose this bore if your application demands balanced force within a tight axial footprint.
The male M6x1.0 rod ends and M5x0.8 port are fixed by the bore. The through-rod prevents rotation and enables dual-end actuation, but remember a plain cylinder drifts if air pressure drops or the valve centers—the fixed NBR bumper only decelerates near stroke end. For strict load holding without live pressure, install 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 SDAD20X80SB FAQ
Because the double-rod design provides equal annular area in both directions, push and pull forces are identical: 131.9 N at 0.5 MPa and 184.7 N at 0.7 MPa. The theoretical maximum is 27 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
No, a plain cylinder drifts when air is lost or the valve is centered. The fixed NBR bumper only decelerates the piston near the stroke end and does not act as a brake. For load holding, you must add an external rod lock or a pilot-operated check valve.
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