Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 350mm 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
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-20S
The AirTAC SAIJ80X350-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 2513N push force at 0.5 MPa, making it well-suited for heavier actuation tasks. The built-in -20 mm adjustment screw allows you to fine-tune the usable travel window down from a 350 mm nominal stroke to anywhere between 330 and 350 mm.
This model includes a magnet (-S) for electronic DMSE solid-state or CMSE reed sensors, which seat cleanly into the dual-side sensor grooves on the extruded aluminum barrel. It features a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance, PT tapered ports, and adjustable air cushions at both ends to soften end-of-stroke impacts.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 350 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 SAIJ80AX350-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×350 | 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 SAIJ80AX350-20S Is Used
Product Changeover
Dial in the exact 330-350 mm end-position during production line format changes without swapping out the entire actuator.
Variable End-Stop Diverter
Adjust the stroke length on the fly to accommodate different package sizes moving down a packaging or sorting conveyor line.
Machine Setup Tuning
Fine-tune the retract end-position during initial machine commissioning to perfectly time the mechanical sequence without external stops.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-20S the Right Cylinder?
Select this 80 mm bore when an application requires higher thrust than a 63 mm cylinder (which provides 1559N push at 0.5 MPa) but does not need the full 3927N output of a 100 mm unit. The adjustable stroke is chosen over a fixed SAI cylinder when you need variable end-stops for product size changeovers, allowing precise end-position tuning at commissioning without adding external physical stops.
Because the 350 mm stroke is substantial, the 25 mm rod and M20x1.5 thread provide rigidity, but an external guide is still recommended to prevent side-loading damage on long unsupported travels. Note that the rear adjuster acts only as a travel stop and deceleration boundary; it does not hold the load without live air pressure. For true fail-safe load holding, consider an external rod lock or the AirTAC BSAI clamp-lock series. This unit is dimensionally interchangeable per ISO 15552 and uses a mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80AX350-20S FAQ
At 0.5 MPa it provides 2513N push and 2268N pull force. At 0.7 MPa the push force is 3518N. The operational speed range is 30-800 mm/s.
The rear adjuster screw lets you shorten the 350 mm nominal stroke by up to 20 mm, creating a usable travel window of 330-350 mm. The adjuster acts as a mechanical stop for end-position tuning and does not lock or hold the load without continuous air pressure.
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