Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 80mm 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
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-50
The AirTAC SAIJ80X80-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 80 mm stroke that can be dialed back by up to 50 mm, creating a highly flexible 30-80 mm usable travel window for precise end-position tuning during commissioning. Delivering 2513 N of push force at 0.5 MPa, it handles demanding positioning tasks with ease.
This variant features an SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and uses PT tapered port threads (G3/8). The extruded aluminum barrel includes sensor grooves on both sides, allowing you to mount CMSE reed or DMSE electronic solid-state switches if a magnet is specified later. The rear screw acts purely as a travel stop for deceleration and does not lock the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAIJ80AX80-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SAIJ80AX80-50 Is Used
Machine Changeover
Dial in the 30-80 mm travel window during product size transitions without swapping cylinders or repositioning external hard stops.
Prototype Tooling
Perfect for R&D setups where the exact retract end-position needs iterative mechanical fine-tuning at commissioning.
Variable End Stops
Provides adjustable retract limits on assembly lines where multiple parts with varying heights are processed at the same station.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-50 the Right Cylinder?
Choose this 80 mm bore when an application requires substantial thrust, such as the 2513 N push force at 0.5 MPa, but needs less than the 3927 N offered by a 100 mm bore. The 50 mm adjustment range is exceptionally wide, making this cylinder ideal for prototype tooling or product-size changeovers where the exact end-of-stroke position varies. Unlike a fixed-stroke SAI cylinder, this model lets you fine-tune the retract distance mechanically without adding external stopper blocks.
For an exact ISO 15552 replacement, match the 80 mm bore, 80 mm nominal stroke, 50 mm adjustment code, PT port thread, and your required mounting bracket (choosing from Basic, FA, LB, TC, FTC, TCM1, or TCM2). Note that the SAIJ series omits FB, CA, CB, and CR mounts. Because the stroke is under 300 mm, side-load stress on the 25 mm rod is manageable, but an external guide remains recommended for heavy lateral loads. If the machine requires true load holding without continuous air pressure, consider the SAIL or BSAI series instead of relying on the rear stopper.
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 SAIJ80AX80-50 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 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 50 mm from the 80 mm nominal length, providing a usable travel window of 30 to 80 mm. The adjuster acts as a mechanical stop to set the end position and does not function as a lock.
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