Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-50 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 SAIJ80AX75-50
The AirTAC SAIJ80X75-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to fine-tune the effective travel anywhere within a 25-75 mm window. Delivering a robust 2513 N of push force at 0.5 MPa, it handles demanding positioning tasks while utilizing a SUS420J2 stainless steel rod for enhanced durability and side-load resistance.
This model features PT tapered port threads (G3/8) and lacks a standard piston magnet, meaning it is not compatible with CMSE or DMSE position sensors out of the box. The rear adjustment screw functions purely as a mechanical stop to set the retract end-position during commissioning or product changeovers, replacing the need to physically swap cylinders or add external stops.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-50 |
|---|---|
| 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 SAIJ80AX75-50
| 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 SAIJ80AX75-50 Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 25-75 mm window during machine commissioning to perfect product handling without external stopper blocks.
Product Size Changeovers
Quickly adapt automated lines to new package dimensions by adjusting the rear screw up to 50 mm, drastically reducing changeover downtime.
Robust Positioning
Leverage the 2513 N push force at 0.5 MPa and SUS420J2 stainless rod to move heavier jigs or fixtures accurately into their working positions.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-50 the Right Cylinder?
Choose this 80 mm bore when your application requires higher thrust than a 63 mm cylinder (which provides 1559 N at 0.5 MPa) but does not need the full 3927 N push force of a 100 mm bore. The 50 mm adjustment range is ideal for machinery requiring frequent product-size changeovers, allowing operators to dial in the exact end-stop without changing the mounting layout.
Because the nominal stroke is 75 mm, the unsupported rod length remains relatively short, but for any dynamic radial loads, an external guide is still recommended to prevent binding. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure; for true pneumatic locking, consider the SAIL or BSAI series instead. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ80AX75-50 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. At the maximum pressure of 1.0 MPa, it can deliver up to 513 kgf.
The rear adjuster screw lets you mechanically shorten the nominal 75 mm stroke down to as little as 25 mm. This creates a 25-75 mm usable travel window, allowing you to set the exact retract end-position during setup without replacing the cylinder.
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