Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-100S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-100S 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 SAIJ80AX400-100S
The AirTAC SAIJ80X400-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 400 mm travel by up to 100 mm. This yields a usable end-position window of 300-400 mm, letting you fine-tune machine stops during commissioning without adding external physical stops or swapping the barrel. The extruded aluminum profile barrel includes sensor grooves on both sides for straightforward position detection.
Delivering 3518 N of push force at 0.7 MPa, this 80 mm bore unit is built for demanding changeover tasks. It features a SUS420J2 stainless steel rod for enhanced corrosion resistance and uses PT tapered port threads. The integrated variable air cushions at both ends manage end-of-stroke deceleration, while the rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-100S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-100S |
|---|---|
| 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 SAIJ80AX400-100S
| 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 SAIJ80AX400-100S Is Used
Variable End-Stop Tuning
Dial in the exact retraction point between 300 and 400 mm during machine setup, avoiding the need to machine custom spacers for every new product run.
Product Changeover Systems
Quickly adapt a packaging line to different carton sizes by rotating the rear adjuster screw to shift the end-of-stroke position on the fly.
Long-Stroke Assembly Presses
Leverage the 3518 N push force at 0.7 MPa to seat components over a long travel distance, fine-tuning the final clamp position without external mechanical stops.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX400-100S the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (982 N at 0.5 MPa) lacks the thrust for your tooling but a 100 mm bore (5497 N at 0.7 MPa) is physically oversized. The 100 mm adjustment range is ideal for production lines running multiple product sizes, replacing fixed-stroke SAI cylinders when you need variable end-stops. To match this ISO 15552 footprint, specify 80 mm bore, 400 mm stroke, PT G3/8 ports, Basic/FA/LB/TC/FTC/TCM1/TCM2 mountings, and the -S magnet for CMSE or DMSE sensors.
Because the 400 mm stroke is long, the 25 mm rod and M20x1.5 thread provide robustness, but an external guide rail is still recommended to prevent excessive side-loading on the piston. For applications requiring the load to be held in place without continuous air pressure, this cylinder is insufficient; the rear stop is not a brake, so you should look at the SAIL or BSAI series instead.
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 SAIJ80AX400-100S FAQ
At 0.7 MPa operating pressure, this 80 mm bore cylinder generates 3518 N of push force and 2268 N of pull force. It can deliver up to 4523 N push force at its maximum 0.9 MPa pressure.
A rear-mounted adjusting screw lets you mechanically shorten the effective stroke by up to 100 mm from the 400 mm nominal length, providing a 300-400 mm travel window. This stopper only sets the end position and deceleration; it does not lock or hold the load without live air pressure.
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