Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 300mm 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
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-40S
The AirTAC SAIJ80X300-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N of push force at 0.5 MPa and features a 300mm nominal stroke that can be fine-tuned down by up to 40mm, creating a precise 260-300mm usable travel window. This built-in adjustability allows you to dial in the retract end position during commissioning without adding external stops.
This SKU is configured with an SUS420J2 stainless steel rod (code A) for superior corrosion resistance and a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) supports AirTAC CMSE reed and DMSE electronic solid-state switches. It utilizes a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 300 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 SAIJ80AX300-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SAIJ80AX300-40S Is Used
Product Size Changeovers
Quickly shift the 260-300mm travel window during packaging line format changes, using the rear screw to set new retract positions without replacing hardware.
Machine Setup Tuning
Fine-tune the end-of-stroke position during initial commissioning to achieve exact mechanical alignment, preventing the need for custom spacer shims.
Variable End Stops
Act as an adjustable diverter or stopper arm on a material handling conveyor, where the required physical blocking distance varies by product type.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-40S the Right Cylinder?
Choose this 80mm bore when an application requires higher thrust than a 63mm cylinder (which provides 1559N push at 0.5 MPa) but does not need the full 3927N output of a 100mm bore. The adjustable stroke is ideal for product changeovers on a line, letting you shift the end-stop by up to 40mm on the fly instead of physically swapping cylinders. Because the nominal stroke is 300mm, the 25mm piston rod and M20x1.5 rod thread will handle moderate side loads, but an external guide rail is recommended for heavy off-center loads.
For an exact ISO 15552 replacement, match the 80mm bore, 300mm stroke, 40mm adjustment, PT port thread, and the -S magnet requirement. Remember that the rear adjuster functions strictly as a travel stop and the air cushions only manage deceleration; neither will hold a load without live air pressure. For true load-holding, consider an AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinder.
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 SAIJ80AX300-40S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The rear adjuster screw allows you to shorten the effective stroke from its 300mm nominal length by up to 40mm, providing a usable travel window of 260-300mm. It acts as a mechanical stop to set the end position and does not lock the load without continuous air pressure.
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