Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-20 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 SAIJ80AX750-20
The AirTAC SAIJ80X750-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 730-750 mm usable travel window, letting you dial back the nominal 750 mm stroke by up to 20 mm during commissioning. Delivering 2513 N of push force at 0.5 MPa, it handles heavy-duty positioning with ease.
This variant features a SUS420J2 stainless steel piston rod (code A) for enhanced corrosion resistance and a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides, ready for position feedback. The rear adjuster acts purely as a mechanical stop to set the travel endpoint and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-20 |
|---|---|
| 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 SAIJ80AX750-20
| 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 SAIJ80AX750-20 Is Used
Variable End-Stop Tuning
Dial in the exact 730-750 mm retraction point during machine commissioning without adding external physical stops.
Product Size Changeover
Quickly adapt the stroke endpoint on packaging lines when processing different product lengths.
Heavy-Duty Positioning
Leverage 2513 N of push force at 0.5 MPa to move heavy pallets or fixtures to a precise adjusted endpoint.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX750-20 the Right Cylinder?
Choose this 80 mm bore size when you need more thrust than a 63 mm cylinder (which yields 1559 N at 0.5 MPa) but less bulk than a 100 mm unit. The adjustable-stroke design is ideal for machine setups requiring variable end-stops or product changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. To match this ISO 15552 footprint exactly, specify an 80 mm bore, 750 mm stroke, 20 mm adjustment, PT port thread, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and no magnet (-S omitted).
Because the 750 mm stroke is long, the 25 mm rod diameter should be supported by an external guide to prevent excessive side-loading. For applications requiring the load to be held in place without continuous air pressure, the rear stopper here is not a lock; you should instead explore an AirTAC SAIL or BSAI clamp-lock cylinder.
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 SAIJ80AX750-20 FAQ
A rear-mounted adjusting screw lets you shorten the effective stroke by up to 20 mm, providing a usable travel window of 730 to 750 mm. This allows fine-tuning of the end position without swapping the cylinder.
At 0.5 MPa operating pressure, it provides 2513 N of push force and 2268 N of pull force. At the maximum pressure of 1.0 MPa, the push force reaches 513 kgf.
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