Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 900mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-20S
The AirTAC SAIJ80X900-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a robust 2513N push force at 0.5MPa and uses a PT tapered G3/8 port. The integrated -20mm adjustment screw allows you to fine-tune the effective travel within an 880-900mm window, perfect for dialing in exact end positions during commissioning without adding external stops.
This unit includes a -S magnet for position sensing with AirTAC CMSE reed or DMSE electronic switches. It features an SUS420J2 stainless steel rod for corrosion resistance and utilizes a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 900mm stroke is exceptionally long, an external guide is highly recommended to manage side loads and prevent rod deflection.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 900 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×900 | 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 SAIJ80AX900-20S Is Used
Long-Stroke Assembly Press
Provides 2513N of thrust at 0.5MPa for pressing components over a 900mm travel, using the 20mm adjuster to set precise final bottoming depth.
Variable Package Diverter
Handles large cartons on a sorting line, using the 880-900mm adjustable window to instantly reposition the divert endpoint during product changeovers.
Heavy Material Lift
Lifts heavy pallets using the 25mm rod, while the external rear stopper safely tunes the exact lower resting position without needing physical shims.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX900-20S the Right Cylinder?
Choose this 80mm bore when a 50mm bore (982N at 0.5MPa) lacks the thrust for heavy moving masses, but a 100mm bore (3927N at 0.5MPa) is physically oversized. The adjustable stroke is ideal for production lines running varying product sizes, allowing operators to shift the end-stop by up to 20mm on the fly rather than swapping the entire cylinder. When replacing an ISO 15552 unit, match the 80mm bore, 900mm stroke, 20mm adjustment, PT G3/8 port, and -S magnet requirements.
Remember that the rear adjuster functions strictly as a mechanical travel stop, not a lock. The cylinder cannot hold its position or bear load without live air pressure; for true load-holding, select 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 SAIJ80AX900-20S FAQ
At 0.5MPa operating pressure, this 80mm bore cylinder generates 2513N of push force and 2268N of pull force. At 0.7MPa, the push force increases to 3518N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the 900mm nominal stroke down to 880mm. This provides a 20mm tuning window for exact end-position setup without replacing the cylinder.
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