Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-50 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 SAIJ80AX350-50
The AirTAC SAIJ80X350-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 300-350 mm usable travel window, allowing you to dial back the 350 mm nominal stroke by up to 50 mm during commissioning. Delivering 4523 N of push force at 0.9 MPa, it is built to handle demanding positioning tasks.
This SKU features a SUS420J2 stainless steel rod for enhanced corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. Remember that the rear adjuster functions strictly as a travel stop, not a load lock; it will not hold a position without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-50 |
|---|---|
| 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 SAIJ80AX350-50
| 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 SAIJ80AX350-50 Is Used
Variable End-Stop Positioning
Dial in the exact 300-350 mm travel distance during machine commissioning to accommodate varying workpiece lengths without adding external mechanical stops.
Product Changeover Systems
Quickly readjust the rear stroke screw on packaging or assembly lines when switching to a new product size, minimizing downtime and avoiding cylinder replacement.
Heavy-Duty Ejection
Leverage the 2513 N push force at 0.5 MPa to eject heavier parts, using the adjustable stroke to fine-tune the ejection distance for safe downstream handling.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-50 the Right Cylinder?
Choose this 80 mm bore when you need substantial thrust—stepping down to a 63 mm bore drops the 0.5 MPa push force to 1559 N, while moving up to a 100 mm bore increases it to 3927 N. The adjustable stroke is ideal for machine setups requiring variable end-stops or frequent product changeovers, eliminating the need to swap out a fixed-stroke SAI cylinder. To replace this ISO 15552 cylinder, match the 80 mm bore, 350 mm stroke, 50 mm adjustment, PT G3/8 port, and your desired mounting bracket (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
Because the 350 mm stroke creates a long lever arm, an external guide is highly recommended to prevent excessive side-loading on the 25 mm rod. For applications requiring true load-holding without continuous air pressure, consider the SAIL or BSAI series 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 SAIJ80AX350-50 FAQ
At 0.5 MPa, it provides 2513 N of push force and 2268 N of pull force. At the maximum operating pressure of 0.9 MPa, the push force increases to 4523 N.
The rear adjuster screw acts as a mechanical stop that allows you to shorten the effective stroke by up to 50 mm. This creates a usable travel window of 300 to 350 mm, letting you fine-tune the end position at commissioning without replacing the cylinder.
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