Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-50S 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 SAIJ80AX90-50S
The AirTAC SAIJ80X90-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 90 mm nominal stroke by up to 50 mm. This yields a highly flexible 40-90 mm usable travel window for precise end-position tuning during commissioning without adding external stops. The 80 mm bore delivers 2513 N of push force at 0.5 MPa, scaling up to 4523 N at 0.9 MPa, making it well-suited for heavier actuation tasks.
This variant features an SUS420J2 stainless steel piston rod (code A) for improved corrosion resistance and ships with a magnet for position sensing. It is compatible with AirTAC CMSE reed and DMSE electronic solid-state switches that drop into the dual-side sensor grooves on the extruded aluminum barrel. The adjuster acts purely as a travel stop for deceleration and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-50S |
|---|---|
| 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 SAIJ80AX90-50S
| 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 SAIJ80AX90-50S Is Used
Product Changeover Stops
Dial in the 40-90 mm travel window during format conversions on a packaging line, setting precise retract positions for varying package sizes without swapping hardware.
Commissioning Fine-Tuning
Use the rear adjusting screw to trim the end-of-stroke position during machine setup, absorbing mechanical tolerance stacks without machining external stop blocks.
Variable End Positioning
Actuate heavy clamps or lifts where the exact retracted position needs occasional field adjustment, leveraging the 2513 N push force at 0.5 MPa to move robust tooling.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-50S the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (982 N push at 0.5 MPa) is insufficient for your load, but a 100 mm bore (3927 N at 0.5 MPa) would be excessive overkill. The adjustable stroke is selected over a fixed SAI cylinder when a machine requires frequent product-size changeovers, letting you fine-tune the retract end-stop on the fly. Because the nominal stroke is 90 mm, side-loading is minimal, but the 25 mm rod and M20x1.5 thread provide robust mechanical stability for dynamic loads.
To match this ISO 15552 interchangeable cylinder, specify bore 80, stroke 90, adjustment 50, PT tapered port thread, G3/8 air supply, and the -S magnet. Note that SAIJ uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. For applications requiring true load-holding without continuous air, consider the SAIL air-released lock or BSAI clamp-lock variants instead of relying on the rear stopper.
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 SAIJ80AX90-50S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.9 MPa, the push force increases to 4523 N.
The rear adjuster screw lets you shorten the 90 mm nominal stroke by up to 50 mm, creating a 40-90 mm usable travel window. The adjuster functions as a mechanical stop for end-position tuning and does not lock or hold the load without live air pressure.
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