Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 240mm 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
- Stroke240 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-20
The AirTAC SAIJ80X240-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 220-240 mm usable travel window, allowing you to dial back the 240 mm nominal stroke by up to 20 mm. This bore delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, making it well-suited for medium-to-heavy industrial handling.
Equipped with a SUS420J2 stainless steel rod and PT tapered ports, this unit omits the FB, CA, CB, and CR mounts, utilizing a reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). The rear adjuster acts purely as a mechanical stop for end-position tuning and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 240 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 SAIJ80AX240-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×240 | 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 SAIJ80AX240-20 Is Used
End-Position Tuning
Fine-tune the retract distance within the 220-240 mm window during commissioning to perfectly align stops without machining external spacers.
Product Changeover
Quickly adapt automated machinery for a new product size by adjusting the rear screw on the line rather than replacing the entire actuator.
Material Handling
Provides 2513 N of thrust at 0.5 MPa to push heavy pallets or trays, with variable end-stops accommodating different load lengths.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-20 the Right Cylinder?
Choose this 80 mm bore when you need higher thrust than a 63 mm cylinder (which offers 1559 N push at 0.5 MPa) but do not require the full 3927 N push of a 100 mm bore. The adjustable stroke is ideal for machine setup and product changeover, letting you fine-tune the retract end-position without swapping the cylinder or adding external stops. For load-holding without continuous air pressure, select an SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead, as the rear stopper on this model is not a brake. To match this ISO 15552 replacement, specify: 80 mm bore, 240 mm stroke, 20 mm adjustment, PT ports, and no magnet.
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 SAIJ80AX240-20 FAQ
It features a rear adjusting screw that lets you shorten the effective stroke by up to 20 mm. This creates a 220-240 mm usable travel window, allowing precise end-position tuning at commissioning without changing the cylinder.
At 0.5 MPa, it provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N.
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Covers non-human-caused product damage.
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