Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 75mm 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
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-50S
The AirTAC SAIJ80X75-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 25-75 mm usable travel window. Delivering 2513 N of push force at 0.5 MPa, it is equipped with a SUS420J2 stainless steel rod for enhanced corrosion resistance and utilizes PT tapered port threads. The integrated magnet enables position sensing with CMSE reed and DMSE electronic switches.
This adjustable model allows you to dial in the exact retract end-position during commissioning without swapping hardware or adding external stops. It features variable air cushions at both ends to absorb kinetic energy, but note that the rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 75 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 SAIJ80AX75-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×75 | 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 SAIJ80AX75-50S Is Used
Machine Setup Changeover
Fine-tune the 25-75 mm travel window during product family changeovers without disassembling the machine or adding external mechanical stops.
Variable End-Stop Positioning
Dial in the exact retract position for multi-format assembly operations, relying on the 25 mm SUS420J2 rod to handle high side loads.
Packaging Line Adjustments
Adapt pusher stroke lengths on the fly for varying carton sizes, using the rear adjuster to set precise movement limits.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-50S the Right Cylinder?
Choose this 80 mm bore when an application requires substantial thrust, such as 2513 N at 0.5 MPa, but stepping down to a 63 mm bore would only provide 1559 N. The 50 mm adjustment range is ideal for product-size changeovers on a packaging line, letting operators redefine the end-stop on the fly. For load-holding without continuous air pressure, this cylinder is not suitable; you would need an external rod lock or the related SAIL or BSAI series.
To replace an ISO 15552 cylinder, match the 80 mm bore, 75 mm nominal stroke, 50 mm adjustment, PT port threads, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR styles found on other variants.
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 SAIJ80AX75-50S FAQ
The rear adjuster allows you to shorten the effective stroke by up to 50 mm from the 75 mm nominal length, creating a 25-75 mm usable travel window. It acts as a mechanical stop for end-position tuning and does not lock the load without live air pressure.
At 0.5 MPa, it provides 2513 N of push force and 2268 N of pull force. At the maximum operating pressure of 1.0 MPa, the push force reaches 513 kgf.
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