Airtac SDAD Double Rod Slim Cylinder SDAD20X20SB
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD20X20SB is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø20mm bore, 20mm 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
- Stroke20 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 SDAD20X20SB
The AirTAC SDAD20X20SB is a compact double-acting cylinder featuring a through-rod that exits both ends of its riveted body. Because the rod occupies both chambers, the annular area is identical in each direction, giving you exactly 131.9 N of push and pull force at 0.5 MPa. This symmetric output is ideal for balancing loads without tweaking pressure regulators.
Equipped with a male M6x1.0 thread on both rod ends and a built-in piston magnet, this unit saves axial mounting depth while supporting reed or electronic switches. The fixed NBR bumper decelerates the stroke end, and the 8 mm rod resists twisting during operation.
Airtac SDAD Double Rod Slim Cylinder SDAD20X20SB Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD20X20SB |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 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 SDAD20X20SB
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 20 | Bore size in mm. |
| ×20 | 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 SDAD20X20SB Is Used
Symmetric Transfer
Drives a pick-and-place arm with equal 131.9 N force extending and retracting, preventing load imbalance during rapid part transfers.
Anti-Twist Guiding
Handles a precision indexing jig where the dual 8 mm rods resist rotational torque better than a single-rod actuator.
Dual-End Tooling
Mounts a forming tool on the front male thread while a dog triggers a reed switch on the rear rod for compact sequencing.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD20X20SB the Right Cylinder?
When sizing this 20 mm bore, compare its 131.9 N output at 0.5 MPa against the smaller SDAD16 at 86.4 N and the larger SDAD25 at 206.2 N. This yields a safe working load around 79 N, or a vertical lift capacity of roughly 6.7 kg with a 2:1 safety margin. The through-rod geometry prevents rotation and lets you mount a tool on one end while tracking position with a switch on the opposite side.
Remember that a standard cylinder drifts when air is lost or the valve centers, as the fixed bumper only decelerates near the stroke end rather than locking the load. For secure load holding without live pressure, install an external rod lock or pilot-operated check valve. This specific configuration includes the S magnet for sensing and the B option for male M6x1.0 rod threads, operating on an M5x0.8 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 SDAD20X20SB FAQ
Because it is a double-rod cylinder, the push and pull forces are equal: 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.
Yes, the through-rod design allows you to attach a tool via the male M6x1.0 thread on one end and mount a sensor dog on the opposite end. The built-in S magnet enables tracking with AirTAC reed or electronic switches.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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