Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-20S 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 SAIJ80AX750-20S
The AirTAC SAIJ80X750-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the 750 mm nominal travel back by up to 20 mm, yielding a 730-750 mm usable window for precise end-position tuning. Built with an SUS420J2 stainless steel rod (code A) and a PT tapered port thread, it delivers 4523 N of push force at 0.9 MPa. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet works seamlessly with CMSE reed and DMSE electronic solid-state switches.
Because the rear adjuster acts purely as a mechanical stop and the air cushions handle deceleration, this cylinder cannot hold a load without live air pressure. For dead-end positioning without continuous pressure, you would need a SAIL pneumatic lock or an external rod lock. The 25 mm rod and M20x1.5 thread provide a robust interface, but at 750 mm of travel, an external guide is strongly recommended to manage side loads and prevent rod deflection.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-20S |
|---|---|
| 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 SAIJ80AX750-20S
| 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 SAIJ80AX750-20S Is Used
Variable End-Stop Positioning
Dial in the exact 730-750 mm retract position during machine setup to accommodate different product lengths without installing external physical stops.
Product Line Changeover
Quickly fine-tune the end-of-stroke position on automated assembly lines when switching between product variants, reducing downtime.
Long-Stroke Clamping
Utilize the 4523 N of thrust at 0.9 MPa for heavy-duty clamping or forming tasks where the final position must be adjusted on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-20S the Right Cylinder?
Choose this 80 mm bore when your application requires substantial thrust—4523 N at 0.9 MPa—combined with the ability to fine-tune the retract end-stop during commissioning without swapping cylinders or adding external shims. If you need less force, stepping down to a 63 mm bore yields 2805 N at 0.9 MPa, while a 100 mm bore pushes 7068 N for heavier loads. The adjustable stroke is ideal for product changeovers on a line where the exact 730-750 mm end position varies slightly. When matching ISO 15552 replacements, verify the 80 mm bore, 750 mm stroke, 20 mm adjustment range, PT port, and the -S magnet requirement. Remember that the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets.
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 SAIJ80AX750-20S FAQ
This 80 mm bore cylinder provides 2513 N of push force at 0.5 MPa and 4523 N at 0.9 MPa. The pull force is 2268 N at 0.5 MPa due to the 25 mm rod displacement.
A rear adjusting screw acts as a mechanical stop, allowing you to shorten the 750 mm nominal stroke by up to 20 mm, creating a 730-750 mm usable travel window. It only sets the travel end and does not lock the load without live air pressure.
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