Airtac SAIJ80 Adjustable Cylinder SAIJ80BX180-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX180-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 180mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- 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 SAIJ80 Adjustable Cylinder SAIJ80BX180-20S
The AirTAC SAIJ80X180-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 180 mm travel by up to 20 mm. This creates a precise 160-180 mm usable window, enabling exact end-position tuning at commissioning without adding external stops.
This SKU ships with a SUS304 stainless steel piston rod for superior corrosion resistance and includes a magnet for position sensing. You can mount CMSE reed or DMSE electronic switches directly into the dual-side sensor grooves. The PT tapered port threads (G3/8) and integrated adjustable air cushions at both ends ensure reliable operation and smooth deceleration across the 30-800 mm/s speed range.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX180-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX180-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 180 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX180-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×180 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX180-20S Is Used
Machine Setup Calibration
Dial in the exact 160-180 mm end-position during commissioning to perfect a pressing operation without machining custom spacers.
Product Size Changeovers
Quickly shorten the retract distance on a packaging line when switching to a smaller carton size, using the 20 mm adjustment window.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX180-20S the Right Cylinder?
The adjustable stroke is chosen over a fixed SAI cylinder when you need a variable end-stop to accommodate product changeovers or fine-tune a machine setup without swapping hardware. For strokes of 300 mm or more, you would need an external guide to prevent rod side-loading, though this 180 mm unit manages moderate loads well via its 25 mm rod diameter.
When matching this for an ISO 15552 replacement, verify the 80 mm bore, 180 mm stroke, 20 mm adjustment range, PT G3/8 port, and the -S magnet option. Remember that the rear adjuster is a travel stop, not a lock; this cylinder will not hold its load without live air pressure. For fail-safe load holding, consider an AirTAC SAIL or BSAI series cylinder instead.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX180-20S FAQ
If you increase the operating pressure to 0.7 MPa, the push force rises to 3518 N.
The rear adjuster screw lets you shorten the effective stroke from the nominal 180 mm down to 160 mm. This creates a 160-180 mm travel window, allowing you to fine-tune the retract end-position at commissioning without replacing the cylinder.
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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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