Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 90mm 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
- Stroke90 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-40S
The AirTAC SAIJ80X90-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 90 mm travel by up to 40 mm. This creates a precise 50-90 mm usable stroke window for fine-tuning end positions during commissioning without swapping hardware. It delivers 2513 N of push force at 0.5 MPa and 3518 N at 0.7 MPa, making it robust enough for heavy manipulation tasks.
This variant features a SUS420J2 stainless steel rod (option A) for improved corrosion resistance compared to standard carbon steel. The -S magnet option enables position sensing with AirTAC CMSE reed or DMSE electronic switches fitted into the dual-side sensor grooves. It uses PT tapered port threads (G3/8) and relies on variable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 90 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 SAIJ80AX90-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×90 | 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 SAIJ80AX90-40S Is Used
Machine Setup Tuning
Dial in the exact 50-90 mm end-of-stroke position during initial commissioning to perfect a press fit without adding external stopper blocks.
Product Changeover
Quickly adjust the travel window when running a new product size on a conveyor line, reducing downtime between batches.
Heavy Clamping
Leverage the 2513 N push force at 0.5 MPa to secure heavy workpieces while using the rear screw to limit clamp travel.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-40S the Right Cylinder?
Choose this 80 mm bore when a 50 mm cylinder (982 N push at 0.5 MPa) lacks the thrust for your tooling, but a 100 mm bore (3927 N) would be excessive overkill. The 40 mm adjustment range is ideal for product changeovers on a packaging line, letting operators set variable end stops on the fly instead of machining external spacers. Because the stroke is under 300 mm, side-loading risks are lower, though the 25 mm rod diameter still handles substantial guide loads.
If your machine requires holding a load statically without continuous air pressure, note that this SAIJ rear adjuster acts only as a travel stop, not a lock. For fail-safe load holding, you would need an external pilot-operated check valve or a related AirTAC series like SAIL or BSAI. This cylinder uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and is dimensionally interchangeable with ISO 15552 cylinders, omitting the FB, CA, CB, and CR brackets.
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 SAIJ80AX90-40S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw lets you shorten the nominal 90 mm stroke by up to 40 mm, creating a 50-90 mm usable travel window. It acts as a mechanical stop to fine-tune the end position and does not lock the load without live air pressure.
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