Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-75S 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 SAIJ80AX350-75S
The AirTAC SAIJ80X350-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 3518N push force at 0.7 MPa, utilizing a 25mm carbon steel rod and G3/8 PT tapered ports. The integrated -S magnet allows seamless position sensing with CMSE reed and DMSE electronic switches. By turning the external rear stopper screw, you can fine-tune the effective travel window anywhere between 275 and 350mm without adding external stops.
This SKU features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance in humid or splash-prone environments. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. Remember that the rear adjuster acts purely as a mechanical travel stop combined with the adjustable air cushions; it does not lock or hold the load without continuous live air pressure. For true fail-safe load holding, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-75S |
|---|---|
| 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 SAIJ80AX350-75S
| 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 SAIJ80AX350-75S Is Used
Variable End-Position Setup
Dial in the exact retraction point within the 275-350mm window during machine commissioning without physically swapping cylinders or shimming mounts.
Product Size Changeover
Quickly adapt the stroke length on a packaging line when handling different package dimensions, using the rear screw to set new travel limits.
Heavy-Duty Positioning
Leverage the 3518N push force at 0.7 MPa to move heavy pallets or fixtures, relying on the SUS420J2 rod for durability in industrial environments.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX350-75S the Right Cylinder?
Choose this 80mm bore when your application requires more thrust than the 63mm bore (which provides 2182N push at 0.7 MPa) but less than the massive 5497N push of a 100mm bore. An adjustable-stroke cylinder is selected over a fixed-stroke SAI when you need on-the-fly end-position tuning during machine commissioning or product changeovers. To replace this ISO 15552 unit, match the 80mm bore, 350mm nominal stroke, 75mm adjustment range, PT G3/8 ports, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting interfaces, and the -S magnet option.
Because the 350mm stroke is relatively long, the unsupported piston rod is susceptible to deflection and side-loading; always use an external guide rail to prevent premature seal wear. The cylinder operates at speeds from 30 to 800 mm/s. Note that neither the rear adjuster nor the air cushions function as a braking lock, so external load-holding mechanisms are required if gravity or inertia must be counteracted without live air.
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 SAIJ80AX350-75S FAQ
At an operating pressure of 0.7 MPa, this 80mm bore cylinder generates a push force of 3518N and a pull force of 2268N. The maximum thrust is 513 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from the nominal 350mm down to as little as 275mm. This provides a 75mm tuning window for precise end-position calibration without replacing the cylinder.
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