Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-50 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 SAIJ80AX400-50
The AirTAC SAIJ80X400-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers a robust 2513N push force at 0.5 MPa, utilizing a 25mm piston rod and G3/8 PT tapered ports. The integrated adjustment screw allows you to trim the nominal 400mm stroke back by up to 50mm, creating a precise 350-400mm usable travel window without changing the cylinder body.
This adjustable travel is ideal for fine-tuning end positions during machine commissioning or product changeovers. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. Constructed with an SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance, it operates at speeds of 30-800mm/s and features variable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-50 |
|---|---|
| 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 SAIJ80AX400-50
| 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 SAIJ80AX400-50 Is Used
Machine Changeover
Dial in the 350-400mm stroke window instantly when switching product sizes on a packaging line, avoiding the need to physically swap out cylinders or reposition hard stops.
End-Position Tuning
Fine-tune the exact retraction point during machine commissioning using the rear screw, ensuring perfect alignment of heavy 80mm bore tooling without mechanical shimming.
Variable Diverter Stroke
Adjust the pusher reach on a sorting conveyor by up to 50mm to handle different package depths, relying on the 2513N force to move items reliably.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-50 the Right Cylinder?
Select this 80mm bore cylinder when an application requires substantial thrust—such as the 2513N push or 2268N pull at 0.5 MPa—combined with variable end-stop positioning. If your setup needs less force, stepping down to a 63mm bore yields 1559N push force, whereas moving up to a 100mm bore provides 3927N. The SAIJ80X400-50 is chosen over a fixed-stroke SAI cylinder when you need on-the-fly stroke trimming during commissioning rather than relying on external stops. Because the 400mm stroke is relatively long, an external guide is recommended to prevent excessive side-loading on the rod. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider an external rod lock or the SAIL series. This model is dimensionally interchangeable per ISO 15552 and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ80AX400-50 FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the 400mm nominal stroke by up to 50mm, providing a usable travel window of 350-400mm. It sets the end position and works with the air cushion to decelerate the load, but it does not lock the position without continuous air pressure.
At a 0.5 MPa operating pressure, the SAIJ80X400-50 provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
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