Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX185-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 185mm 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
- Stroke185 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 SAIJ80AX185-40S
The AirTAC SAIJ80X185-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the effective travel back by up to 40 mm. This creates a usable stroke window of 145-185 mm, allowing you to dial in the exact retract end position at commissioning without adding external stops. It delivers a robust 2513 N pull force at 0.5 MPa, making it well-suited for heavy positioning tasks.
This specific configuration includes a SUS420J2 stainless steel rod (code A) for superior corrosion resistance and a PT tapered port thread. The extruded aluminum barrel features sensor grooves on both sides, and the integrated magnet (-S) is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches for precise position feedback.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 185 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 SAIJ80AX185-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×185 | 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 SAIJ80AX185-40S Is Used
Machine Changeover
Quickly reconfigure the retract end-stop for different product sizes on a packaging line without replacing the cylinder or bolting on external mechanical stops.
End-Position Tuning
Fine-tune the 145-185 mm travel window during machine commissioning to perfect the seating or clamping position of heavy assemblies.
Variable Stops
Adjust the retract distance on the fly for diverter arms or gating mechanisms that must handle varying package dimensions.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-40S the Right Cylinder?
Choose this 80 mm bore model when your application requires 2513 N of pull force at 0.5 MPa and a variable retract end-stop. If you need less force, the 63 mm bore offers 1402 N pull; if you need more, the 100 mm bore provides 3681 N. The adjustable 145-185 mm travel window is ideal for product changeovers on a line, letting you fine-tune the stroke without swapping the cylinder. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR.
Because the 185 mm stroke is under 300 mm, side-load stress on the 25 mm rod is moderate, though long unsupported loads still require an external guide. Remember that the rear adjuster acts only as a travel stop and the air cushions handle deceleration; neither holds the load without live air. For fail-safe load holding, use a SAIL (air-released lock) or BSAI (clamp-lock) cylinder, or fit an external pilot-operated check valve.
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 SAIJ80AX185-40S FAQ
The rear adjuster screw lets you shorten the 185 mm nominal stroke by up to 40 mm, providing a usable travel window of 145-185 mm. It acts as a mechanical stop to set the end position and does not lock the load without live air pressure.
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