Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX50-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 50mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-40S
The AirTAC SAIJ80X50-40-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. The integrated magnet (-S) enables precise position detection.
This model provides a nominal 50 mm stroke that can be dialed back by up to 40 mm, creating a highly versatile 10-50 mm usable travel window. The extruded aluminum barrel includes sensor grooves on both sides, and fluid supply routes through PT G3/8 tapered ports. The rear stopper screw allows mechanics to fine-tune the retract end position during commissioning without adding external stops.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 50 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×50 | 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 SAIJ80AX50-40S Is Used
Product Changeovers
Dial in the exact 10-50 mm retract position instantly when switching between product sizes on a packaging line, avoiding mechanical rebuilds.
End-Stop Tuning
Fine-tune the final resting position during machine commissioning using the rear adjuster, ensuring perfect alignment without adding external hard stops.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX50-40S the Right Cylinder?
The adjustable 10-50 mm travel window is ideal for product-size changeovers on a line, allowing operators to set exact end positions on the fly instead of physically swapping cylinders. For load-holding without live air pressure, note that the rear adjuster functions strictly as a travel stop and not a lock; you would need an external pilot-operated check valve or a related SAIL lock cylinder for that capability.
To match this exact ISO 15552 replacement, specify: 80 mm bore, 50 mm stroke, 40 mm adjustment range, PT G3/8 ports, SUS420J2 rod material, and the -S magnet option. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the stroke is under 300 mm, side-load stress on the rod thread is minimal, though external guides are always recommended for heavy lateral loads.
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 SAIJ80AX50-40S FAQ
The rear adjuster acts as a mechanical stop that allows you to shorten the 50 mm nominal stroke by up to 40 mm. This creates a usable travel window of 10-50 mm, enabling precise end-position tuning without changing the cylinder itself.
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