Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-30S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke85 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-30S
The AirTAC SAIJ80X85-30-S is a double-acting, single-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 30 mm, giving operators a 55-85 mm usable travel window for precise end-position tuning during commissioning. In the 80 mm bore class, it delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, operating at speeds of 30-800 mm/s.
This variant features a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and because this SKU includes a magnet (-S), it directly supports AirTAC CMSE reed and DMSE electronic solid-state switches. The SAIJ mounting interface covers Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-30S |
|---|---|
| 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 | 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 SAIJ80AX85-30S
| 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 SAIJ80AX85-30S Is Used
Product Changeover
Dial in the 55-85 mm travel window during packaging format changes to accommodate different carton sizes without replacing hardware.
End-Stop Calibration
Fine-tune the retract end-position precisely during machine commissioning using the rear adjuster rather than adding external stops.
Variable Positioning
Set custom retraction points on the fly for multi-model assembly lines requiring flexible but high-force (2513 N) actuation.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX85-30S the Right Cylinder?
Choose this 80 mm bore when an application requires high thrust (2513 N push at 0.5 MPa) but demands on-the-fly end-stop variability without swapping cylinders or adding external stops. If your process needs less force, stepping down to a 63 mm bore yields 1559 N push at 0.5 MPa. The rear adjuster on this model acts strictly as a travel stop to fine-tune the 55-85 mm window; it does not hold the load without live air. For true load-holding without continuous pressure, select the SAIL (air-released lock) or BSAI (clamp-lock) series instead.
To match this ISO 15552 cylinder for a replacement, specify an 80 mm bore, 85 mm nominal stroke, 30 mm adjustment range, PT tapered ports, and the -S magnet option. Although the 85 mm stroke is relatively short, the 25 mm rod and M20x1.5 rod thread provide robust side-load capacity, though any long unsupported travel still requires an external guide.
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 SAIJ80AX85-30S 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 the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster acts as a mechanical stop that lets you shorten the 85 mm nominal stroke by up to 30 mm, creating a 55-85 mm usable travel window. It only sets the travel end and does not hold the load without live air.
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