Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-40 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 SAIJ80AX75-40
The AirTAC SAIJ80X75-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to fine-tune the effective travel down to a 35-75 mm window. Delivering 2513 N of push force at 0.5 MPa, it handles robust actuation tasks while allowing precise end-position calibration during commissioning. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This variant features a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and utilizes PT tapered port threads (G3/8). The rear adjuster acts purely as a mechanical stop to set the retraction endpoint, meaning it does not hold the load without live air pressure. For applications requiring true load-holding without continuous pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-40 |
|---|---|
| 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 SAIJ80AX75-40
| 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 SAIJ80AX75-40 Is Used
Variable End-Stop Calibration
Dial in the exact retraction point within the 35-75 mm window during machine setup to accommodate varying product sizes without adding external physical stops.
Changeover Optimization
Quickly adjust the stroke on production lines handling multiple part formats, reducing downtime between batches by tuning the rear screw instead of replacing the cylinder.
Robust Actuation Control
Leverage the 2513 N push force at 0.5 MPa for heavy-duty positioning tasks while using the rear stopper to prevent overtravel and ensure consistent mechanical endpoints.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-40 the Right Cylinder?
Select this 80 mm bore cylinder when your application requires substantial force—2513 N push at 0.5 MPa—and the ability to dial in the exact end-stop without swapping hardware. If your force requirements are lower, stepping down to a 63 mm bore yields 1559 N at 0.5 MPa. The primary advantage of the SAIJ80X75-40 over a fixed SAI cylinder is eliminating the need for external shims during product changeovers. To match this exact configuration, specify an 80 mm bore, 75 mm stroke, 40 mm adjustment, PT G3/8 ports, SUS420J2 rod, and no magnet.
Because the nominal stroke of 75 mm is relatively short, side-loading is less of a concern here than with longer strokes, but an external guide is still recommended for heavy radial loads. The mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 accessories, omitting the FB, CA, CB, and CR options found in some standard sets.
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 SAIJ80AX75-40 FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 75 mm stroke by up to 40 mm, providing a usable travel window of 35 to 75 mm. It is a travel stop, not a lock, so it will not hold the load without live air pressure.
At a 0.5 MPa operating pressure, the SAIJ80X75-40 provides 2513 N of push force and 2268 N of pull force. The maximum operating pressure is 1.0 MPa.
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