Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-20 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 SAIJ80AX350-20
The AirTAC SAIJ80X350-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 330 to 350 mm usable travel window. Delivering 2513 N of push force at 0.5 MPa, it handles heavy positioning tasks with precision. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This variant uses a SUS420J2 stainless steel rod for enhanced corrosion resistance and features PT tapered ports. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning without adding external stops. It is not a locking device, so live air pressure is required to hold the load.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-20 |
|---|---|
| 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 SAIJ80AX350-20
| 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 SAIJ80AX350-20 Is Used
Machining End-Stop Tuning
Dial in the exact retract position of a machining fixture during commissioning without swapping cylinders or fabricating shims.
Product Size Changeover
Quickly adapt a packaging line diverter arm to accommodate varying box lengths by adjusting the 20 mm travel window.
Heavy Assembly Positioning
Leverage the 2513 N push force to move heavy subcomponents into place while fine-tuning the final resting stop.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-20 the Right Cylinder?
Choose this adjustable model over a fixed SAI cylinder when your machine setup requires variable end-stops or product-size changeovers on the fly. The 2513 N thrust at 0.5 MPa suits medium-heavy loads; step down to a 63 mm bore (1559 N) for lighter fixtures, or up to a 100 mm bore (3927 N) if your payload demands greater push force. For true load-holding without continuous air pressure, select the SAIL or BSAI series instead.
With a 350 mm stroke, the 25 mm rod and M20x1.5 thread provide robust rigidity, but an external guide is strongly recommended to prevent side-load damage over this extended travel. To match this ISO 15552 cylinder, specify an 80 mm bore, 350 mm stroke, 20 mm adjustment, PT G3/8 ports, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, 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 SAIJ80AX350-20 FAQ
At 0.5 MPa, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. If operated at 0.7 MPa, the push force increases to 3518 N.
A rear external stopper screw lets you mechanically shorten the effective travel from 350 mm down to 330 mm. This allows precise end-position tuning during setup, though it functions as a travel stop, not a lock, and requires live air to hold position.
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