Airtac SDAD Double Rod Slim Cylinder SDAD20X45S
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD20X45S is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø20mm bore, 45mm 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
- Stroke45 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 SDAD20X45S
The AirTAC SDAD20X45S is a compact double-acting cylinder featuring an 8 mm piston rod exiting both ends of its riveted body. Because the rod occupies each chamber, the annular area stays identical, yielding an equal push and pull force of 131.9 N at 0.5 MPa. This symmetry prevents twisting and ensures stable motion for delicate mechanisms.
Equipped with a built-in magnet (-S), it supports AirTAC reed or electronic switches for position sensing. The short body design saves axial mounting depth, while fixed NBR bumpers absorb end-of-stroke shock. Operating at 30-500 mm/s, it handles a safe working load of roughly 79 N or a 6.7 kg vertical lift with a 2:1 margin.
Airtac SDAD Double Rod Slim Cylinder SDAD20X45S Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD20X45S |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø20 mm |
| Stroke | 45 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 SDAD20X45S
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 20 | Bore size in mm. |
| ×45 | 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 SDAD20X45S Is Used
Gripper Jaw Sync
Drives opposing gripper fingers with identical 131.9 N force in both directions, ensuring parallel clamping without twist.
Dual-End Pick & Place
Mounts a vacuum pickup on one rod end and a cam dog on the other, using the through-rod to maintain precise linear tracking.
Transfer Pusher
Shifts lightweight parts along a guide rail, relying on the equal extend and retract dynamics to prevent binding in tight spaces.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD20X45S the Right Cylinder?
When sizing this unit, note the SDAD16 provides 86.4 N at 0.5 MPa, whereas the SDAD25 offers 206.2 N. The 20 mm bore hits a middle ground at 131.9 N. The through-rod geometry lets you mount a tool on one side and a sensor dog on the opposite end, resisting rotation. This configuration includes the M5x0.8 port, female M4x0.7 rod threads, and the -S magnet.
Remember that a standard cylinder drifts when air is lost or a valve centers, as the fixed bumper only decelerates near stroke end rather than locking. For 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 SDAD20X45S FAQ
The double-rod design provides equal force in both directions: 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.
Yes, the 8 mm through-rod protrudes from both sides, allowing you to drive a tool on one end and trigger a reed or electronic switch on the other while resisting rotational twist.
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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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