Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-75 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 SAIJ80AX400-75
The AirTAC SAIJ80X400-75 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers a robust 4523N of push force at 0.9 MPa and provides a usable travel window of 325-400mm, letting you dial back the nominal 400mm stroke by up to 75mm during commissioning.
This unit uses a SUS420J2 stainless steel piston rod (material code A) for improved corrosion resistance and features PT tapered port threads. It includes adjustable air cushions at both ends to decelerate the load, but remember the rear adjuster is a travel stop, not a lock; for load-holding without live air, use an external rod lock or SAIL cylinder.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-75 |
|---|---|
| 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 SAIJ80AX400-75
| 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 SAIJ80AX400-75 Is Used
Variable End Stops
Set precise retraction distances for different package sizes on a conveyor without physically swapping the actuator.
Machine Changeover
Fine-tune the 325-400mm travel window during product family transitions to minimize setup downtime.
Stroke Tuning
Dial in the exact end-of-stroke position during equipment commissioning to account for mechanical tolerances.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-75 the Right Cylinder?
Choose this 80mm bore when an application requires more thrust than the 63mm option (which provides 2805N push at 0.9 MPa) but less than the 100mm class. The 75mm adjustment range is ideal for production lines running mixed product sizes, allowing you to fine-tune the end position without swapping the cylinder or adding external stops. Because the nominal stroke is 400mm, an external guide is recommended to prevent excessive side-loading on the rod and thread.
To match this ISO 15552 dimensionally interchangeable cylinder, specify an 80mm bore, 400mm stroke, 75mm adjustment, PT G3/8 port, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). It omits FB, CA, CB, and CR mounts. Since no magnet is specified, it cannot use CMSE or DMSE sensors.
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 SAIJ80AX400-75 FAQ
At 0.9 MPa operating pressure, this 80mm bore cylinder provides 4523N of push force and 4068N of pull force. The maximum thrust is 513 kgf at 1.0 MPa.
The rear adjuster acts as a mechanical stop that shortens the effective travel. For this model, it creates a 325-400mm usable window, allowing you to trim the 400mm stroke by up to 75mm without moving the cylinder mounts.
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