Airtac SAIJ80 Adjustable Cylinder SAIJ80AX30-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX30-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 30mm 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
- Stroke30 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX30-20
The AirTAC SAIJ80X30-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 30mm stroke that can be dialed back by up to 20mm, giving you a precise 10-30mm usable travel window for exact end-position tuning at commissioning. In this configuration, the 80mm bore delivers 2513N of push thrust and 2268N of pull thrust at a 0.5MPa operating pressure.
This SKU uses a SUS420J2 stainless steel rod for enhanced corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic sensors. The rear adjuster acts purely as a mechanical stop to fine-tune the travel end without swapping the cylinder, and it does not lock or hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX30-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX30-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 30 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 SAIJ80AX30-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×30 | 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 SAIJ80AX30-20 Is Used
Product Changeover
Dial in the end-stop from 30mm down to 10mm during product size transitions on the line, allowing rapid changeovers without changing the cylinder.
Clamping Force Setup
Fine-tune the clamping travel at commissioning to achieve the exact 80mm bore thrust needed without over-traveling and damaging the workpiece.
Variable End Stops
Use the rear adjuster to set a precise mechanical stop for short-stroke ejector or gating mechanisms where fixed cylinders are too rigid.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX30-20 the Right Cylinder?
Choose this 80mm bore adjustable cylinder when your application requires high force combined with variable end-stops. If your setup needs slightly less thrust, stepping down to a 63mm bore yields 1559N of push force at 0.5MPa. Conversely, moving up to a 100mm bore provides 3927N. The 20mm adjustment range is ideal for machine setups requiring product changeovers, replacing the need to bolt on external stops or swap out a fixed-stroke SAI cylinder.
Because the stroke is short at 30mm, side-loading is minimal, but always ensure the load is guided to prevent rod binding. If your machine requires true load-holding without continuous air pressure, note that this cylinder's adjuster is only a stop; you would need an external rod lock or a SAIL pneumatic lock cylinder instead. This SAIJ model shares the exact ISO 15552 mounting interface and accepts a reduced set of mounts: 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 SAIJ80AX30-20 FAQ
At 0.5MPa, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At a maximum operating pressure of 1.0MPa, the push force reaches 5026N.
The SAIJ80X30-20 has a rear adjusting screw that allows you to shorten the effective stroke by up to 20mm. This creates a usable travel window of 10-30mm, letting you fine-tune the end position at commissioning without replacing the cylinder.
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