Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-40S 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 SAIJ80AX350-40S
The AirTAC SAIJ80X350-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that lets you dial back the nominal 350mm travel by up to 40mm, creating a precise 310-350mm usable positioning window. Delivering 4523N of push force at 0.9MPa, it is built with a SUS420J2 stainless steel rod for corrosion resistance and includes a magnet for solid-state DMSE or reed CMSE position sensing.
Because the 350mm stroke is relatively long, the 25mm rod and M20x1.5 thread provide robust support, though an external guide remains recommended for heavy lateral loads. The extruded aluminum barrel carries sensor grooves on both sides, and the rear adjuster acts purely as a mechanical stop for end-position tuning, not a lock.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-40S |
|---|---|
| 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 SAIJ80AX350-40S
| 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 SAIJ80AX350-40S Is Used
Machine Changeover
Quickly reposition the retract end-stop by up to 40mm to accommodate different product lengths on the same line without changing the cylinder.
End-Position Tuning
Fine-tune the exact 310-350mm travel window during commissioning to perfect timing and avoid mechanical hard crashes.
Long-Stroke Forming
Leverage the 4523N push force and 350mm travel for large press or forming operations, using the adjuster to set the precise bottoming depth.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-40S the Right Cylinder?
Choose this 80mm bore when 50mm bore falls short at 1767N push at 0.9MPa, or when 100mm bore at 7068N is excessive. The 40mm adjustable range is ideal for product changeovers, letting you fine-tune the retract end position at commissioning without swapping cylinders or adding external stops. It uses PT tapered ports and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
For strokes of 350mm or more, side-load management is critical, so ensure proper external guiding. The rear adjuster and air cushions only decelerate the load, so for position holding without live air, select an SAIL or BSAI cylinder instead.
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 SAIJ80AX350-40S FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the 350mm nominal stroke by up to 40mm, providing a usable travel window of 310-350mm. It is used for fine-tuning end positions at commissioning and does not lock the load without live air.
At 0.9MPa operating pressure, the SAIJ80X350-40-S provides 4523N of push force and 2268N of pull force, with a maximum thrust of 513 kgf at 1.0MPa.
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