Airtac SAIJ80 Adjustable Cylinder SAIJ80AX475-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX475-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 475mm 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
- Stroke475 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX475-20
The AirTAC SAIJ80X475-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 455 to 475 mm, enabling precise end-position tuning during commissioning without adding external stops. The 80 mm bore generates 2513 N of pull force and 3518 N of push force at 0.7 MPa.
This variant uses an SUS420J2 stainless steel piston rod to resist corrosion, paired with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, allowing direct mounting of CMSE reed and DMSE electronic sensors if a magnet is added later. The rear adjuster acts purely as a mechanical stop and does not lock the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX475-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX475-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 475 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 SAIJ80AX475-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×475 | 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 SAIJ80AX475-20 Is Used
Machine Changeover
Dial in the 455-475 mm travel window during product size changes on a packaging line without physically swapping the cylinder.
Variable End Stops
Adjust the retract end-position precisely to push different pallet widths onto a heavy-duty conveyor system.
Assembly Press Tuning
Fine-tune the end-of-stroke contact point for a 3518 N press operation at commissioning to avoid over-travel damage.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX475-20 the Right Cylinder?
Choose this 80 mm bore when an application requires substantial thrust but exact end-positioning needs fine-tuning at setup or product changeover. If you need less force, stepping down to a 63 mm bore yields 1402 N of pull force at 0.5 MPa. Since the 475 mm stroke is relatively long, the 25 mm rod diameter handles high side loads, but an external guide rail is recommended for unsupported loads to prevent premature wear.
For drop-in interchangeability per ISO 15552 mounting dimensions, match the 80 mm bore, 475 mm stroke, 20 mm adjustment range, PT G3/8 port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting. This SAIJ variant omits the FB, CA, CB, and CR mounts. If true load-holding is required without live air, select a SAIL air-released lock or BSAI clamp-lock cylinder instead of relying on the rear stopper.
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 SAIJ80AX475-20 FAQ
At 0.7 MPa operating pressure, this 80 mm bore cylinder generates 3518 N of push force and 2513 N of pull force. The maximum push force is 4523 N at 0.9 MPa.
The rear adjuster screw allows you to shorten the effective travel by up to 20 mm, creating a usable stroke window of 455 to 475 mm. The adjuster functions as a mechanical stop to set the end position and does not lock the load when air pressure is removed.
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