Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 400mm 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
- Stroke400 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-75S
The AirTAC SAIJ80X400-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 325-400 mm usable travel window by allowing you to dial back the 400 mm nominal stroke by up to 75 mm during commissioning. Delivering 2513 N of push force at 0.5 MPa, it handles substantial actuation tasks with precision.
This unit includes a -S magnet for position sensing with CMSE reed and DMSE electronic switches. The rod is constructed from SUS420J2 stainless steel for corrosion resistance, and air connections use PT tapered threads. The extruded aluminum barrel integrates sensor grooves on both sides, and the mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 400 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 SAIJ80AX400-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×400 | 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 SAIJ80AX400-75S Is Used
Product Changeover Tuning
Dial in the 325-400 mm travel window on the fly to accommodate different carton lengths without physically replacing the cylinder.
End-Stop Calibration
Use the 75 mm rear adjuster to precisely set the retract position during machine setup, avoiding the need for external mechanical stops.
Material Handling
Leverage 2513 N of push force at 0.5 MPa to move heavy pallets, using the DMSE sensor to confirm end-of-stroke arrival.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-75S the Right Cylinder?
Choose this 80 mm bore when 50 mm (982 N at 0.5 MPa) is insufficient but 100 mm (3927 N) would be oversized. The 75 mm adjustment range is ideal for product changeovers, letting you fine-tune the end position without swapping the cylinder or adding external stops. At 400 mm of travel, the M20x1.5 rod thread and 25 mm rod diameter provide rigidity, but an external guide is recommended for heavy side loads.
For drop-in ISO 15552 interchangeability, match the 80 mm bore, 400 mm stroke, PT port threads, and -S magnet. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider the SAIL or BSAI series instead of relying on the cushion.
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 SAIJ80AX400-75S FAQ
The rear adjuster allows you to shorten the effective stroke by up to 75 mm, providing a usable travel window of 325 to 400 mm. It acts as a mechanical stop to fine-tune the end position without changing the cylinder itself.
At 0.5 MPa operating pressure, it provides 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, the push force reaches 513 kgf.
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