Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 650mm 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
- Stroke650 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-30
The AirTAC SAIJ80X650-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 620 to 650 mm usable travel window, letting you dial back the nominal stroke by up to 30 mm during commissioning. The extruded aluminum barrel features sensor grooves on both sides, though this specific configuration omits the internal magnet.
Delivering 4523 N of push force at 0.9 MPa, this 80 mm bore unit uses a PT tapered port and an SUS420J2 stainless steel piston rod. The rear adjuster acts purely as a mechanical stop to set the end position; it does not lock the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 650 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 SAIJ80AX650-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×650 | 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 SAIJ80AX650-30 Is Used
Variable End-Stop Setup
Fine-tune the retraction point by up to 30 mm during machine commissioning without adding external physical stops.
Product Changeover
Quickly adjust the 620-650 mm travel window to accommodate different product sizes on a single production line.
Long-Stroke Assembly
Use the 4523 N push force for long-travel pressing or lifting tasks where exact end-position calibration is critical.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-30 the Right Cylinder?
Choose this 80 mm bore when you need 4523 N of thrust at 0.9 MPa and a 620-650 mm stroke window for fine-tuning end positions. If your application requires less force, stepping down to a 63 mm bore yields 2805 N at 0.9 MPa. Conversely, a 100 mm bore provides 7068 N for heavier loads.
The adjustable stroke is ideal for variable end-stops and product changeover without swapping cylinders. Because the 650 mm stroke is long, the 25 mm rod diameter will still require an external guide to handle side loads. This SAIJ configuration uses PT ports and omits the -S magnet. It supports a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80AX650-30 FAQ
At 0.9 MPa operating pressure, this 80 mm bore cylinder delivers 4523 N of push force and 2268 N of pull force. It reaches a maximum of 513 kgf at 1.0 MPa.
The rear adjuster screw lets you shorten the 650 mm nominal stroke by up to 30 mm, creating a 620-650 mm travel window. It functions as a travel stop and does not hold the load without continuous air pressure.
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