Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-40S 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 SAIJ80X200-40S
The AirTAC SAIJ80X200-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster and a piston magnet for position sensing. It delivers a robust 4523N push force at 0.9 MPa and features a 25mm carbon steel rod with an M20x1.5 thread. By turning the rear stopper screw, you can shorten the effective travel from its 200mm nominal length, creating a precise 160-200mm usable stroke window for exact end-position tuning.
This adjustable design eliminates the need to swap cylinders or add external mechanical stops during machine changeovers. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept AirTAC CMSE reed switches or DMSE solid-state sensors. It uses a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found on some standard ISO cylinders.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-40S |
|---|---|
| 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 SAIJ80X200-40S
| 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 SAIJ80X200-40S Is Used
Product Changeover
Dial in the 160-200mm travel window on the fly when switching product sizes on a packaging line, avoiding the downtime of physically swapping cylinders.
Machine Setup
Use the 40mm rear adjustment range to fine-tune the retract end-position during initial commissioning without adding external stopper blocks to the machine frame.
Variable End Stops
Ideal for assembly stations where the retraction point must be periodically altered to accommodate different workpiece heights while maintaining 4523N of thrust.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X200-40S the Right Cylinder?
Choose this 80mm bore when an application requires high thrust (up to 4523N push at 0.9 MPa) but still needs micro-adjustments at commissioning. If your process needs less force, stepping down to a 63mm bore provides 2805N push force; if you require significantly higher output, moving up to a 100mm bore yields 7068N. The integrated -S magnet allows for direct drop-in of DMSE electronic or CMSE reed sensors without extra brackets.
For any fixed-stroke ISO 15552 replacement, match the 80mm bore, 200mm stroke, G3/8 PT port, and the -S magnet requirement. Because the nominal stroke is 200mm, side-loading is less critical than on longer strokes, but the load should still be guided to prevent rod binding. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ80X200-40S FAQ
The rear stopper screw allows you to trim the effective travel back by up to 40mm. This creates an adjustable 160-200mm stroke window, letting you set the exact retract position without changing the cylinder.
At 0.9 MPa, it provides 4523N of push force and 2268N of pull force. The standard operating speed range for this bore size is 30-800 mm/s.
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