Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-40S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke185 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-40S
The AirTAC SAIJ80X185-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 145 to 185 mm. Fitted with a carbon steel rod and a PT tapered port, it delivers 3518 N of push force at 0.7 MPa. The extruded aluminum barrel features sensor grooves on both sides to house CMSE reed or DMSE electronic switches.
This adjustable model allows fine end-position tuning at commissioning without adding external stops. The rear adjuster functions purely as a travel stop for deceleration and does not lock the load; use SAIL or BSAI variants for fail-safe load holding without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-40S |
|---|---|
| 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 | 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 SAIJ80X185-40S
| 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 SAIJ80X185-40S Is Used
Machine Changeovers
Quickly reposition the retract stop within the 145-185 mm window to accommodate different product sizes on the same line.
Commissioning Calibration
Fine-tune the end-of-stroke position during setup without fabricating or bolting on external physical stops.
Clamping Operations
Delivers up to 4523 N of push force at 0.9 MPa for secure holding, while the stopper allows precise clamping depth control.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-40S the Right Cylinder?
Choose this 80 mm bore when an application requires more thrust than a 63 mm cylinder (1559 N at 0.5 MPa) but less than a 100 mm unit (3927 N at 0.5 MPa). The 40 mm adjustment window is ideal for product changeovers, letting you dial in the exact end-stop without swapping the cylinder. It supports a speed range of 30-800 mm/s.
To match this ISO 15552 interchangeable cylinder, specify the 80 mm bore, 185 mm stroke, 40 mm adjustment, PT port thread, and the -S magnet option. Mounting options are restricted to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the stroke is under 300 mm, side-load risks are moderate, but the 25 mm rod diameter handles standard loads well.
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 SAIJ80X185-40S FAQ
The rear adjuster acts as a mechanical stop, allowing you to shorten the effective stroke by up to 40 mm. This creates a usable travel window of 145 to 185 mm, enabling fine-tuning of the end position without replacing the cylinder.
Operating at 0.7 MPa, this 80 mm bore double-acting cylinder provides 3518 N of push force and 2268 N of pull force. At the maximum operating pressure of 1.0 MPa, it can deliver up to 513 kgf.
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