Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 80mm 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
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-20S
The AirTAC SAIJ80X80-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers a robust 3518N push force at 0.7 MPa, making it suited for heavy-duty positioning tasks. The integrated -S magnet supports position sensing via CMSE reed or DMSE electronic switches fitted into the dual-side sensor grooves.
With a nominal 80 mm stroke and a 20 mm adjustment range, the usable travel window is 60-80 mm. This built-in adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning without adding external stops. The piston rod is SUS420J2 stainless steel, and the unit uses PT tapered ports.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAIJ80AX80-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SAIJ80AX80-20S Is Used
Machine Changeover
Dial in the 60-80 mm travel window during product size changes to set new retract stops without physically swapping cylinders on the line.
Fixture Clamping
Provides 3518N clamping force at 0.7 MPa while allowing operators to fine-tune the exact clamping depth at commissioning.
Assembly Station Setup
Ideal for dialing in the exact end-of-stroke position for pressing or locating parts, ensuring perfect alignment without external stop blocks.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-20S the Right Cylinder?
Choose this 80 mm bore when an application requires substantial thrust, such as 2513N push force at 0.5 MPa, but needs precise end-position tuning. If the full 80 mm stroke is unnecessary, you could step down to a 63 mm bore offering 2182N at 0.7 MPa, but this SAIJ model lets you dial back the travel to a 60-80 mm window without swapping the cylinder body.
The rear adjuster sets the travel end and relies on the variable air cushion for deceleration, but it does not hold the load without live air pressure. For true load-holding, consider the SAIL or BSAI series. Mounting options include 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 SAIJ80AX80-20S FAQ
At 0.7 MPa, this 80 mm bore cylinder provides 3518N of push force and 2268N of pull force. At 0.5 MPa, it delivers 2513N push and 2268N pull.
The rear adjuster screw lets you shorten the 80 mm nominal stroke by up to 20 mm, creating a 60-80 mm usable travel window. It functions as a mechanical stop for end-position tuning and is not a lock.
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