Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 290mm 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
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-20
The AirTAC SAIJ80X290-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 270 to 290 mm, allowing you to dial back the nominal 290 mm stroke by up to 20 mm during commissioning. Delivering a robust 4523N of push force at 0.9 MPa, it handles heavy actuation tasks with ease.
This model incorporates a 25 mm carbon steel rod and M20x1.5 thread, offering high side-load resistance, though the 290 mm length still benefits from an external guide. The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE electronic switches. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 290 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 SAIJ80X290-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×290 | 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 SAIJ80X290-20 Is Used
Machine Changeover
Fine-tune the end position up to 20 mm when switching production runs, avoiding the need to physically swap out cylinders or reconfigure fixed stops.
Variable End Positioning
Dial in the exact retract distance within the 270-290 mm window to accommodate slight variations in part dimensions on an automated line.
Product Diversion
Adjust the stroke length on the fly to handle different package sizes on a conveyor system, ensuring accurate sorting and routing.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-20 the Right Cylinder?
Choose this 80 mm bore when you need more thrust than a 63 mm cylinder provides, which yields 2805N of push force at 0.9 MPa. The adjustable stroke is ideal for product changeovers or variable end-stops, letting you fine-tune positioning without swapping the cylinder or bolting on external stops. The rear screw acts purely 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. To replace an ISO 15552 unit, match the 80 mm bore, 290 mm stroke, PT G3/8 port, and mounting interface.
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 SAIJ80X290-20 FAQ
At 0.9 MPa operating pressure, this 80 mm bore cylinder generates 4523N of push force and 4070N of pull force. At 0.5 MPa, it provides 2513N push and 2268N pull.
A rear adjuster screw allows you to shorten the effective stroke by up to 20 mm, creating a usable travel window of 270 to 290 mm. This stopper only limits the travel end and does not lock or hold the load without continuous air pressure.
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