Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 240mm 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
- Stroke240 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-30S
The AirTAC SAIJ80X240-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513 N push force at 0.5 MPa, stepping up to 4523 N at 0.9 MPa. The integrated -S magnet enables precise position detection using AirTAC CMSE reed or DMSE electronic solid-state switches housed within the dual-side sensor grooves on the extruded aluminum barrel.
This specific SKU provides a 240 mm nominal stroke that can be fine-tuned backward by up to 30 mm, creating a usable travel window of 210-240 mm. It features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and uses PT tapered port threads sized at G3/8. The rear adjuster acts purely as a mechanical stop to dial in end positions during commissioning, meaning it does not lock or hold the load without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 240 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 SAIJ80AX240-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×240 | 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 SAIJ80AX240-30S Is Used
Product Changeover
Dial in the 210-240 mm travel window instantly on the factory floor when shifting between product sizes, using the rear stopper to set exact retraction distances without changing the cylinder.
Machine Setup Calibration
Fine-tune the end-of-stroke position during initial commissioning to achieve precise mechanical alignment, leveraging the 30 mm adjustment range to perfect the tooling point.
Variable End Stops
Handle varying package lengths on a conveyor by adjusting the retract distance on the fly, using the 2513 N push force at 0.5 MPa to reliably push items without overtravel.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-30S the Right Cylinder?
Choose this adjustable 80 mm bore when an application demands exact end-position tuning during setup or product changeover, avoiding the need to physically swap cylinders or bolt on external stops. If your process requires less force, stepping down to a 63 mm bore yields 1559 N of push at 0.5 MPa; stepping up to a 100 mm bore provides 3927 N. For holding a load safely without live air pressure, this cylinder is insufficient since the rear screw is a stop, not a brake. You would need an external rod lock, a pilot-operated check valve, or an AirTAC SAIL (air-released lock) or BSAI (clamp-lock) variant instead.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 240 mm stroke, 30 mm adjustment range, G3/8 PT ports, and the -S magnet requirement. The SAIJ supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. Because the 240 mm stroke is moderately long, ensure external guide rails support the load to prevent excessive side-loading on the 25 mm rod and its M20x1.5 thread.
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 SAIJ80AX240-30S 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 0.9 MPa, the push force increases to 4523 N.
The rear adjuster screw allows you to shorten the 240 mm nominal stroke by up to 30 mm, providing an effective travel window of 210-240 mm. This stopper fine-tunes the end position but does not lock the load without live air pressure.
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