Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-75S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX290-75S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke290 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 SAIJ80BX290-75S
The AirTAC SAIJ80X290-75-S is a double-acting ISO 15552 profile cylinder featuring a double rod and a rear stroke adjuster. By integrating a -S magnet, it supports direct mounting of AirTAC CMSE reed and DMSE electronic sensors directly into the dual-sided aluminum barrel grooves. The SUS304 (B) stainless steel rod material provides superior corrosion resistance for harsher environments.
Equipped with a 75mm adjustment mechanism, this model transforms a fixed 290mm stroke into a highly versatile 215-290mm usable travel window. This built-in rear stopper allows operators to dial in the exact retract end-position during commissioning without swapping out the cylinder or fabricating external stops. The adjuster acts strictly as a travel limiter that works in tandem with the variable air cushions, meaning it regulates deceleration rather than securing the load mechanically.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-75S |
|---|---|
| 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 | 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 SAIJ80BX290-75S
| 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 SAIJ80BX290-75S Is Used
Product Changeovers
Dial in the 215-290mm travel window during line changeovers to accommodate different package sizes without replacing the cylinder.
End-Stop Calibration
Fine-tune the retract position during machine commissioning to achieve precise mechanical alignment without external shims.
Variable Forming Stops
Adjust the rear stopper on the fly for multi-format production runs, ensuring accurate positioning across varying material lengths.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-75S the Right Cylinder?
Select this 80mm bore when an application requires substantial thrust—stepping up to the 100mm bore yields 7068N at 0.9 MPa, while dropping to a 63mm bore provides 2805N. The 75mm adjustable range is ideal for machinery requiring significant travel variance during product changeovers. Because the nominal stroke is 290mm, which approaches the threshold for long unsupported travel, an external guide is recommended to prevent excessive side-loading on the 25mm rod and M20x1.5 thread.
An adjustable stroke is chosen over a fixed SAI cylinder when exact end-position tuning is necessary at machine setup. Remember that the rear adjuster and air cushions only decelerate the travel end; they do not hold the load without live air pressure. For true load-holding in the event of pressure loss, integrate an external pilot-operated check valve or select an AirTAC SAIL or BSAI cylinder. This SAIJ model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and is dimensionally interchangeable per ISO 15552.
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 SAIJ80BX290-75S FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 75mm. This turns the standard 290mm stroke into a 215-290mm usable travel window, enabling precise end-position tuning at commissioning without needing to swap cylinders.
It operates at speeds between 30 and 800 mm/s.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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