Airtac SDAD Double Rod Slim Cylinder SDAD20X15SB
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD20X15SB is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø20mm bore, 15mm 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
- Stroke15 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 SDAD20X15SB
The AirTAC SDAD20X15SB is a double-acting, double-rod compact cylinder featuring a 20mm bore and 15mm stroke. Because the piston rod exits both ends, the annular area remains identical in each chamber, ensuring push force equals pull force at 131.9 N under 0.5 MPa. This symmetric output is ideal for balancing loads without tweaking pressure regulators.
Equipped with male M6x1.0 threaded rods on both ends, this variant allows direct tool mounting while the built-in magnet enables position detection. The short riveted body minimizes axial footprint, and a fixed NBR bumper absorbs end-of-stroke impacts within the 30-500 mm/s speed range.
Airtac SDAD Double Rod Slim Cylinder SDAD20X15SB Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD20X15SB |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø20 mm |
| Stroke | 15 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 SDAD20X15SB
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 20 | Bore size in mm. |
| ×15 | 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 SDAD20X15SB Is Used
Symmetrical Transfer Jaws
Drives opposing gripper jaws with equal 131.9 N force in both directions, ensuring perfectly centered part handling without mechanical bias.
Dual-End Profiling Station
Mounts a forming tool on the front male M6 rod and a cam dog on the rear, using the anti-rotation through-rod to maintain strict alignment.
Compact Film Sealing
Fits into tight machine envelopes via its short riveted body, applying uniform sealing pressure across the 15mm stroke.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD20X15SB the Right Cylinder?
When sizing this unit, compare its 131.9 N output at 0.5 MPa against adjacent bores: the SDAD16 yields 86.4 N, while the SDAD25 provides 206.2 N. For this 20mm bore, a safe working load is roughly 79 N (about 60% of the 0.5 MPa figure), allowing a vertical lift of approximately 6.7 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.
This configuration includes the -S magnet for AirTAC reed or electronic switches and the -B option for male M6x1.0 rod threads. Air enters via M5x0.8 ports. Remember that the fixed NBR bumper only decelerates the stroke end; it does not hold the load. If air pressure drops, the piston will drift, so add an external rod lock or pilot-operated check valve for secure load holding.
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 SDAD20X15SB FAQ
Because the double-rod design creates equal annular areas, force is identical in both directions: 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.
Yes. The through-rod resists twisting and exits both ends, allowing you to attach a work tool to the front male M6 thread and a dog for a reed or electronic switch on the rear.
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