Airtac SDAD Double Rod Slim Cylinder SDAD20X50SB
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD20X50SB is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø20mm bore, 50mm 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
- Stroke50 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 SDAD20X50SB
The AirTAC SDAD20X50SB is a compact double-acting cylinder featuring a through-rod that exits both ends of the riveted body. Because the rod occupies both chambers, the annular area is identical on extend and retract, 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 built-in magnet (-S) for AirTAC reed or electronic switches, the unit occupies minimal axial footprint. The -B option specifies male M6x1.0 rod threads on both ends, allowing you to mount a fixture on one side and a position dog on the opposite end. A fixed NBR bumper absorbs end-of-stroke impact inside the 30-500 mm/s speed range.
Airtac SDAD Double Rod Slim Cylinder SDAD20X50SB Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD20X50SB |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø20 mm |
| Stroke | 50 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 SDAD20X50SB
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 20 | Bore size in mm. |
| ×50 | 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 SDAD20X50SB Is Used
Symmetric Transfer Arms
Drives a dual-sided transfer arm where the equal 131.9 N extend and retract forces prevent imbalanced acceleration on the return trip.
Twin-Spindle Tooling
Mounts a machining head on one male M6 rod end while a dog affixed to the opposite end trips an electronic switch for precise stroke confirmation.
Balanced Vertical Lifters
Lifts a 6.7 kg electronics tray using the anti-rotation through-rod to keep the platform perfectly level without external guides.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD20X50SB the Right Cylinder?
When sizing this 20 mm bore, compare its 131.9 N output at 0.5 MPa against the smaller SDAD16 (86.4 N) and larger SDAD25 (206.2 N). This makes the SDAD20X50SB the right choice for medium-light pick-and-place tasks. A safe working load is roughly 79 N (about 60 percent of the 0.5 MPa figure), yielding a vertical lift capacity near 6.7 kg with a 2:1 safety margin.
The through-rod geometry resists twisting during fast cycling. Remember that the fixed NBR bumper only decelerates the stroke end; it will not hold a load if air pressure drops. For vertical load holding without live pressure, add an external rod lock or pilot-operated check valve. This configuration includes the M5x0.8 port, male M6x1.0 rods at both ends, and the piston 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 SDAD20X50SB FAQ
The push and pull forces are equal because the rod exits both ends. It generates 131.9 N at 0.5 MPa, 184.7 N at 0.7 MPa, and a theoretical maximum of 27 kgf at 1.0 MPa. The maximum operating pressure is 1.0 MPa.
Yes. The double-rod design allows you to attach a work fixture to one male M6x1.0 threaded end while using the opposite end to trigger a reed or electronic switch via the built-in magnet, keeping your sensing hardware completely separate from the work area.
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1-Year Warranty
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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