Airtac SAIJ80 Adjustable Cylinder SAIJ80AX30-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX30-20S 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 SAIJ80AX30-20S
The AirTAC SAIJ80X30-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the nominal 30 mm travel down to a 10-30 mm usable window. It delivers 2513 N of push force at 0.5 MPa and 3518 N at 0.7 MPa. The extruded aluminum barrel includes sensor grooves on both sides, and this -S variant includes a magnet for position detection.
This SKU is built with an SUS420J2 stainless steel rod (option A) for corrosion resistance and uses PT tapered ports. The rear adjuster acts purely as a mechanical stop to fine-tune the end position during commissioning; it is not a lock and cannot hold a load without live air pressure. For load-holding without continuous air, consider the SAIL or BSAI series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX30-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX30-20S |
|---|---|
| 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 SAIJ80AX30-20S
| 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 SAIJ80AX30-20S Is Used
Machine Setup Tuning
Dial in the exact end position within the 10-30 mm window during initial commissioning without machining custom spacers.
Variable End Stops
Adjust the retract stop on the fly to accommodate minor dimensional variations in clamped parts or assemblies.
Product Changeover
Quickly reset the stroke length for different product sizes running on the same line, leveraging the 2513 N force at 0.5 MPa.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX30-20S the Right Cylinder?
Choose this 80 mm bore when an application requires heavy force across a very short, variable distance. If you need less thrust, stepping down to a 50 mm bore yields 982 N at 0.5 MPa, while a 100 mm bore provides 3927 N for heavier payloads. The integrated 20 mm adjustment screw allows precise end-stop tuning during machine setup without adding external stops or swapping out a fixed-stroke SAI cylinder.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 30 mm stroke, PT G3/8 ports, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. The 25 mm rod and M20x1.5 thread handle high side loads well, though even short-stroke applications should ensure proper mounting alignment to prevent premature seal wear.
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 SAIJ80AX30-20S FAQ
At 0.5 MPa it provides 2513 N push and 2268 N pull. At 0.7 MPa the push force increases to 3518 N.
The rear adjuster screw mechanically limits the retract travel, allowing you to shorten the 30 mm stroke by up to 20 mm, creating a 10-30 mm usable window. It functions as a stop, not a lock.
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