Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 200mm 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
- Stroke200 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-20
The AirTAC SAIJ80X200-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 2513N push force at 0.5 MPa. It features a 25mm carbon steel piston rod and PT G3/8 tapered ports. By integrating an external adjusting stopper at the rear, this unit allows you to trim the effective travel back by up to 20mm, creating a precise 180-200mm usable stroke window without changing the cylinder body.
This adjuster acts purely as a mechanical travel stop to fine-tune the retract end position during commissioning or product changeover; it does not lock or hold the load without live air. The extruded aluminum barrel includes sensor grooves on both sides for easy switch mounting. Mounting options are a specific subset of the standard SAI series, including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR configurations.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 200 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 SAIJ80X200-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×200 | 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 SAIJ80X200-20 Is Used
Machine Changeover
Dial in the 180-200mm travel window during product size changes to set new retract endpoints without physically swapping the actuator.
End-Position Tuning
Fine-tune the final retract position during machine commissioning using the rear stopper to absorb mechanical tolerances perfectly.
Variable End Stops
Provide adjustable mechanical stops for automated tooling that requires slight positional shifts between different production runs.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-20 the Right Cylinder?
Choose this 80mm bore when an application requires more force than a 63mm cylinder (which provides 1559N push at 0.5 MPa) but does not need the full 3927N output of a 100mm unit. The adjustable stroke is ideal for setups requiring variable end-stops or fine end-position tuning at commissioning, saving the hassle of swapping cylinders or adding external stops. For load-holding without continuous live air pressure, this plain SAIJ is insufficient as the rear adjuster is only a stop, not a lock; consider an AirTAC SAIL or BSAI cylinder instead. To match this ISO 15552 interchangeable cylinder exactly, confirm the 200mm nominal stroke, 20mm adjustment, PT G3/8 port, and mounting style.
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 SAIJ80X200-20 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The rear adjusting screw acts as a mechanical stop, allowing you to shorten the 200mm nominal stroke by up to 20mm. This creates a usable travel window of 180-200mm for fine-tuning the retract position at commissioning.
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