Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 90mm 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
- Stroke90 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-40
The AirTAC SAIJ80X90-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5MPa. By turning the external stopper screw, you can trim the nominal 90mm stroke back by up to 40mm, creating a highly adaptable 50-90mm usable travel window. This allows operators to fine-tune end positions at commissioning without swapping out the entire actuator.
This unit features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and uses PT tapered port threads with a G3/8 connection. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. While the rear adjuster and variable air cushions decelerate the piston at travel ends, neither component locks the load; position holding without live air requires a SAIL or BSAI variant.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 90 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 SAIJ80AX90-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×90 | 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 SAIJ80AX90-40 Is Used
Product Changeovers
Dial in the 50-90mm travel window during format size changes on a packaging line, using the rear screw to set new end positions without changing the cylinder.
Machine Setup
Achieve exact end-position tuning at commissioning by trimming the 90mm stroke back incrementally, avoiding the need to bolt on external physical stops.
Variable End Stops
Provide adjustable physical endpoints for assembly presses requiring up to 2513N of push force, allowing flexible stroke limits per batch.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-40 the Right Cylinder?
Choose this 80mm bore when an application demands substantial thrust, such as 2513N push or 2268N pull at 0.5MPa. If your setup requires less force, stepping down to a 63mm bore yields 1559N push force, whereas a 100mm bore provides 3927N for heavier loads. The adjustable 50-90mm travel window is ideal for machines that undergo frequent product changeovers, eliminating the need to physically swap cylinders to achieve different end-stops.
When matching an ISO 15552 replacement, verify the 80mm bore, 90mm nominal stroke, 40mm adjustment range, PT G3/8 port, and mounting style. SAIJ supports a reduced set of mounts: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Note that the 25mm piston rod and M20x1.5 thread handle side loads well, but because the stroke is relatively short at 90mm, external guides are less critical here than on longer strokes.
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 SAIJ80AX90-40 FAQ
At 0.5MPa operating pressure, this 80mm bore cylinder generates 2513N of push force and 2268N of pull force. At 0.7MPa, the push force increases to 3518N.
The rear stopper screw allows you to shorten the 90mm nominal stroke by up to 40mm, providing a usable travel window of 50-90mm. The adjuster acts as a travel stop and does not lock the load without live air pressure.
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