Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 750mm 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
- Stroke750 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-40S
The AirTAC SAIJ80X750-40-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, delivering a robust 2513N pull force at 0.5 MPa. It features a SUS420J2 stainless steel rod and a built-in magnet for CMSE reed and DMSE electronic sensors. The integrated rear stopper allows you to fine-tune the travel window from 710 to 750 mm without swapping out the entire unit.
Because the 750 mm stroke is substantial, the 25mm piston rod and M20x1.5 thread provide necessary rigidity, though an external guide is recommended to prevent side-loading damage. This adjustable design saves time during machine commissioning by letting you dial in the exact retract position on the fly.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 750 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 SAIJ80AX750-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×750 | 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 SAIJ80AX750-40S Is Used
Machine Changeover
Quickly fine-tune the 710-750mm retract end-position during product size changes without replacing the cylinder or adding external stops.
Long-Stroke Assembly
Handles heavy pushing tasks with 2513N pull force, using the rear screw to dial in the exact clamping distance on long-travel machinery.
Sensor-Ready Positioning
The -S magnet works with DMSE solid-state sensors to track the adjustable travel window accurately in automated assembly lines.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-40S the Right Cylinder?
Choose this 80mm bore when your application requires more thrust than a 63mm bore (which provides 1402N pull at 0.5 MPa) but less than the massive 3681N pull of a 100mm bore. The adjustable 40mm end-stop is ideal for product changeovers where the exact retract position varies slightly. Unlike a fixed-stroke SAI cylinder, this model lets you trim the travel back up to 40 mm mechanically.
For a drop-in ISO 15552 replacement, match the 80mm bore, 750mm stroke, PT tapered port threads, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. Remember that the rear adjuster is a travel stop, not a lock; for true load-holding without live air pressure, use an external rod lock or consider the SAIL or BSAI series.
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 SAIJ80AX750-40S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At the maximum 1.0 MPa, it can deliver up to 513 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from 750 mm down to 710 mm. It sets the travel end-point but does not hold the load without live air pressure.
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