Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-50 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 SAIJ80AX750-50
The AirTAC SAIJ80X750-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 700-750 mm usable travel window, allowing you to dial back the nominal 750 mm stroke by up to 50 mm during commissioning without adding external stops. In the 80 mm bore class, it delivers a robust 4523 N of push force at 0.9 MPa.
This unit is built with a SUS420J2 stainless steel rod for improved corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches. The rear adjuster acts purely as a travel stop to set end positions and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-50 |
|---|---|
| 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 SAIJ80AX750-50
| 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 SAIJ80AX750-50 Is Used
Variable End-Stop Positioning
Dial in the exact retract distance within the 700-750 mm window during machine setup to accommodate different material lengths without external spacers.
Product Changeover Systems
Quickly reconfigure the stroke end-position on packaging lines when switching to a new product size, using the 50 mm rear adjustment screw.
Long-Stroke Assembly Presses
Leverage the 4523 N push force and long 750 mm travel to drive large components, making fine end-position tweaks at commissioning.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-50 the Right Cylinder?
Choose this 80 mm bore cylinder when an application requires 4523 N of push force at 0.9 MPa and a variable end-stop. The 50 mm adjustment range is ideal for product changeovers on a line, letting you fine-tune the retract position on the fly instead of swapping out a fixed-stroke SAI cylinder. If your machine needs less force, stepping down to a 63 mm bore yields 2805 N. If you need true load-holding without continuous air pressure, this plain SAIJ is insufficient since its adjuster is only a stop; consider an SAIL lock or BSAI clamp-lock cylinder instead.
Because the 750 mm stroke is long and unsupported, the 25 mm rod diameter and M20x1.5 thread still require an external guide to prevent excessive side-loading. This SAIJ is dimensionally interchangeable per ISO 15552 and supports a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80AX750-50 FAQ
The rear adjuster screw acts as an external stop, letting you shorten the effective travel from 750 mm down to 700 mm. It sets the end position but does not lock or hold the load without live air pressure.
At 0.9 MPa, the SAIJ80X750-50 provides 4523 N of push force and 2268 N of pull force. The maximum thrust is 513 kgf at 1.0 MPa.
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