Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-20 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 SAIJ80AX80-20
The AirTAC SAIJ80X80-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down by 20 mm, creating a usable stroke window of 60-80 mm. This built-in stopper lets you dial in the exact end position during commissioning or product changeovers without swapping out the physical cylinder or adding external stops. Delivering a robust 4523 N of push force at 0.9 MPa, it is designed for heavy-duty positioning.
This model features a SUS420J2 stainless steel rod (option A) for improved corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of position detectors. It uses PT tapered port threads (G3/8) and relies on variable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-20 |
|---|---|
| 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 SAIJ80AX80-20
| 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 SAIJ80AX80-20 Is Used
Machine Setup & Changeover
Quickly dial in the retract end position within the 60-80 mm window during machine setup or product size changes, eliminating the need to machine custom spacers.
Variable End-Stop Positioning
Fine-tune the final resting position of a tooling plate on the fly, ensuring precise alignment without physically removing the cylinder from the fixture.
Adjustable Material Pushoff
Accommodate varying package sizes on a packaging line by adjusting the stroke length to push items accurately to the next conveyor stage.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX80-20 the Right Cylinder?
Choose this 80 mm bore when you need higher force than the 63 mm class (which provides 2805 N push at 0.9 MPa) but want to avoid the larger footprint of a 100 mm cylinder. The adjustable stroke is ideal for machines that require precise end-position tuning on the fly, whereas a fixed-stroke SAI cylinder would require shimming or replacement to change the travel limit. When matching an ISO 15552 replacement, verify the 80 mm bore, 80 mm nominal stroke, 20 mm adjustment range, PT G3/8 ports, and your required mounting style. The SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ80AX80-20 FAQ
The rear of the cylinder features an external adjusting screw that acts as a mechanical stopper. For this model, you can shorten the 80 mm nominal stroke by up to 20 mm, giving you an adjustable travel window of 60 to 80 mm. Note that this adjuster is a stop, not a lock; the cylinder requires live air pressure to hold its position.
At an operating pressure of 0.9 MPa, the SAIJ80X80-20 provides a push force of 4523 N and a pull force of 4071 N. It can deliver a maximum push force of 513 kgf at 1.0 MPa.
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