Airtac SDAD Double Rod Slim Cylinder SDAD20X45
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD20X45 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 SDAD20X45
The AirTAC SDAD20X45 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, yielding equal push and pull force of 131.9 N at 0.5 MPa. This symmetry is essential for mechanisms requiring consistent motion in both directions.
With an 8 mm rod diameter and a 45 mm stroke, this unit saves axial mounting depth where a larger profile cylinder will not fit. The stroke ends are decelerated by a fixed NBR bumper rather than an adjustable air cushion. Note this specific SKU lacks a piston magnet and cannot support position sensing.
Airtac SDAD Double Rod Slim Cylinder SDAD20X45 Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD20X45 |
|---|---|
| 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 SDAD20X45
| 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 SDAD20X45 Is Used
Symmetric Transfer Jig
Provides 131.9 N of equal force in both directions to push and pull a transfer jig without stroke asymmetry.
Anti-Twist Guiding
The dual-end through-rod resists rotational torque, keeping a precision guiding head stable over 45 mm of travel.
Dual-End Pick & Place
Drives a gripper on the front rod while the rear rod extension actuates a mechanical dog for sequence timing.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD20X45 the Right Cylinder?
When sizing this 20 mm bore model, compare its 131.9 N output at 0.5 MPa against adjacent bores. Dropping to SDAD16 provides 86.4 N, while stepping up to SDAD25 yields 206.2 N. This makes the SDAD20X45 ideal for a safe working load around 79 N, or lifting roughly 6.7 kg vertically with a 2:1 safety margin.
The through-rod design prevents twisting and allows driving a tool on one end while mounting a dog on the opposite side. This SKU has female M4x0.7 rod threads and an M5x0.8 port. Remember that a plain cylinder drifts on air loss or valve centring; the fixed bumper only decelerates near stroke end. For load holding, specify 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 SDAD20X45 FAQ
Because the double-rod design provides equal annular area on both sides, push and pull forces are identical: 131.9 N at 0.5 MPa, 184.7 N at 0.7 MPa, and a maximum theoretical output of 27 kgf at 1.0 MPa.
No, this specific SKU does not have a piston magnet. You would need the SDAD20X45S variant to use AirTAC reed or electronic switches for position detection.
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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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Related AirTAC SDAD Cylinders
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