Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 800mm 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
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-75S
The AirTAC SAIJ80X800-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 4523N of push force at 0.9 MPa. It features an extruded aluminum barrel with sensor grooves on both sides and a SUS420J2 stainless steel rod. By incorporating a magnetic piston (-S), it enables precise position detection using AirTAC CMSE reed or DMSE electronic solid-state switches.
This model provides an 800mm nominal stroke with a 75mm adjustment range, yielding a usable travel window of 725-800mm. This built-in rear stopper allows you to fine-tune the retract end position during commissioning without adding external stops. The PT tapered port threads ensure a tight pneumatic seal, while the generous 800mm travel handles extensive linear positioning tasks.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 800 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 SAIJ80AX800-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×800 | 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 SAIJ80AX800-75S Is Used
Variable End-Stop Positioning
Dial in the retract position anywhere within the 725-800mm window during machine setup to accommodate different product lengths without swapping hardware.
Long-Stroke Diverting
Utilize the 800mm travel to push heavy items across wide transfer lines, relying on the 4523N push force at 0.9 MPa for reliable actuation.
Product Size Changeovers
Quickly adjust the rear stopper by up to 75mm to handle multi-format packaging runs, ensuring precise end-position tuning at commissioning.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-75S the Right Cylinder?
Selecting this 80mm bore makes sense when your application requires the 2513N pull force at 0.5 MPa and a highly adjustable end-stop within a long 725-800mm travel window. If your changeover requirements demand less force, stepping down to a 63mm bore offers 1559N push at 0.5 MPa. Conversely, heavier loads requiring more thrust would necessitate moving up to a 100mm bore with its 3927N push at 0.5 MPa. The integrated adjuster is strictly a travel stop for deceleration and positioning, not a locking mechanism; this cylinder cannot hold a load without live air pressure. For dead-load holding, consider an AirTAC SAIL or BSAI cylinder.
Because this cylinder features an 800mm stroke, the extended rod is susceptible to side-loading forces. An external guide rail should be installed to prevent premature seal wear and rod bending. This SKU is dimensionally interchangeable per ISO 15552 mounting interfaces and utilizes a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). It operates efficiently at speeds between 30-800mm/s and uses a G3/8 port.
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 SAIJ80AX800-75S FAQ
At 0.5 MPa, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.9 MPa, the push force increases to 4523N.
The rear adjuster acts as an external stopper that allows you to shorten the effective stroke by up to 75mm. This creates a usable travel window of 725-800mm, enabling fine-tuning of the end position without replacing the cylinder.
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