Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX85-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 85mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke85 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-20S
The AirTAC SAIJ80X85-20-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 85 mm stroke that can be dialed back by up to 20 mm, yielding a precise 65-85 mm usable travel window for fine-tuning end positions at commissioning.
This variant features a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel integrates sensor grooves on both sides, and the G3/8 PT tapered ports ensure high flow for its 30-800 mm/s speed range.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 85 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×85 | 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 SAIJ80AX85-20S Is Used
End-Position Tuning
Dial in the exact 65-85 mm travel window during machine commissioning to perfect pressing or clamping depth without machining new spacers.
Product Changeover
Quickly adapt the stroke end-stop on packaging lines when switching to different carton sizes or product widths.
Variable Assembly Stops
Set precise retraction points for robotic pick-and-place assemblies where multiple end positions are required from a single actuator.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-20S the Right Cylinder?
If you need less force, stepping down to a 63 mm bore yields 1559 N at 0.5 MPa; if you need more, a 100 mm bore provides 3927 N. Because the stroke is under 300 mm, side-load risks are moderate, but the M20x1.5 rod thread still requires external guiding for heavy lateral loads.
Choose the adjustable SAIJ over a fixed SAI cylinder when machine setups involve varying product sizes or require precise end-stop tuning without adding external stops. Remember that the rear adjuster acts only as a travel stop, not a lock; the SAIJ does not hold loads without live air. For true load-holding, consider the SAIL or BSAI series. To match this ISO 15552 footprint, specify an 80 mm bore, 85 mm stroke, 20 mm adjustment, G3/8 PT ports, SUS420J2 rod, and a magnet for CMSE/DMSE switches. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80AX85-20S FAQ
At 0.7 MPa, the push force increases to 3518 N.
The rear adjusting screw acts as a mechanical stop that allows you to shorten the 85 mm nominal stroke by up to 20 mm. This creates a usable travel window of 65-85 mm, enabling fine-tuning of the retract end position without replacing the cylinder.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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