Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-75S 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 SAIJ80AX750-75S
The AirTAC SAIJ80X750-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel anywhere within a 675 to 750 mm window. Delivering 2513 N of push force at 0.5 MPa, it provides substantial thrust for heavy positioning tasks. The integrated adjustment screw lets you dial in the exact retract end-position during commissioning without adding external stopper blocks.
This specific configuration includes a SUS420J2 stainless steel rod for superior corrosion resistance and a PT tapered port thread. It is equipped with a magnet for CMSE reed and DMSE electronic sensors, and it retains the standard SAI variable air cushions at both ends to decelerate the moving load. Note that the rear adjuster acts purely as a travel stop and does not lock the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-75S |
|---|---|
| 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 SAIJ80AX750-75S
| 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 SAIJ80AX750-75S Is Used
Variable End-Stop Machining
Fine-tune the 675 to 750 mm retract position precisely to accommodate different part lengths on a machining line without changing out the physical cylinder.
Product Changeover Diverter
Adjust the stroke on the fly during product size changeovers to properly position diverter arms on a heavy-duty conveyor handling bulk materials.
Commissioning Calibration
Dial in the exact end-position during initial machine commissioning to clear mechanical interference, saving the cost of machining custom external spacers.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-75S the Right Cylinder?
Choose this 80 mm bore when your application requires 2513 N of push force at 0.5 MPa, bridging the gap between the 63 mm bore (1559 N) and the 100 mm bore (3927 N). The adjustable stroke is highly beneficial for machine setups requiring variable end-stops or frequent product-size changeovers, negating the need to physically swap out a fixed-stroke SAI cylinder. If your process demands absolute position holding without continuous air pressure, consider the SAIL (pneumatic lock) or BSAI (clamp-lock) series instead, as the SAIJ adjuster is strictly a stop.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 750 mm stroke, 75 mm adjustment range, PT port thread, and the -S magnet requirement. Because this model features a 750 mm stroke, the 25 mm rod and M20x1.5 thread will still experience deflection under high side-loads; always utilize an external guide rail to prevent cylinder binding.
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 SAIJ80AX750-75S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. It can reach up to 4523 N of push force at its maximum 0.9 MPa operating pressure.
The rear adjuster screw allows you to shorten the 750 mm nominal stroke by up to 75 mm, creating a usable travel window of 675 to 750 mm. This stopper fine-tunes the end position but does not hold the load without live air pressure.
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