Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 290mm 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
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-50S
The AirTAC SAIJ80X290-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 3518N of push force at 0.7MPa, featuring a 25mm piston rod and a G3/8 port. A standout feature is its 50mm adjustment range, which creates a usable travel window of 240-290mm. This allows you to fine-tune the retract end-position at commissioning without swapping out the cylinder or adding external stops.
This specific SKU is configured with a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance, PT tapered ports, and an integrated magnet (-S) for position sensing. The extruded aluminum barrel includes sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic switches. It utilizes a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 290 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 SAIJ80AX290-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×290 | 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 SAIJ80AX290-50S Is Used
Variable End-Stop Positioning
Dial in the exact retract distance between 240 and 290mm during machine setup to accommodate varying product sizes without changing hardware.
Product Changeover Systems
Quickly adjust the stroke length on packaging or sorting lines when switching between different package dimensions.
Heavy-Duty Assembly Presses
Leverage 3518N of push force at 0.7MPa for pressing components, using the rear stopper to fine-tune the final pressing depth.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-50S the Right Cylinder?
Selecting this 80mm bore makes sense when your application requires substantial force but demands flexible end-stops for product changeovers. If you need less force, stepping down to a 63mm bore yields 2182N at 0.5MPa, whereas moving up to a 100mm bore provides 5497N at 0.7MPa. Choose this adjustable SAIJ over a fixed-stroke SAI when you need on-the-fly end-position tuning. Remember that the rear adjuster acts only as a travel stop and deceleration aid; it does not hold the load without live air. For true load-holding without pressure, consider the SAIL or BSAI series.
Because the 290mm stroke approaches the mid-to-high range for an 80mm bore, the 25mm rod and M20x1.5 thread provide strong support, but an external guide is recommended for heavy lateral loads. When replacing an ISO 15552 cylinder, match the 80mm bore, 290mm nominal stroke, 50mm adjustment, G3/8 PT ports, and the desired mounting bracket.
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 SAIJ80AX290-50S FAQ
This 80mm bore double-acting cylinder generates 2513N of push force and 2268N of pull force at 0.5MPa. At 0.7MPa, it delivers 3518N of push force.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 290mm nominal stroke down to as little as 240mm. It decelerates the travel end but does not lock the load without live air pressure.
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