Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-40 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 SAIJ80AX650-40
The AirTAC SAIJ80X650-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 2513N of push force at 0.5MPa and provides a usable travel window of 610 to 650mm, letting you dial in the exact retract position without adding external stops.
This unit uses an SUS420J2 stainless steel rod for enhanced corrosion resistance and PT tapered port threads. It supports standard SAIJ mountings including Basic, FA, LB, TC, FTC, TCM1, and TCM2, explicitly omitting FB, CA, CB, and CR brackets.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-40 |
|---|---|
| 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 SAIJ80AX650-40
| 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 SAIJ80AX650-40 Is Used
Product Changeovers
Quickly modify the retract distance by up to 40mm during packaging line format changes without replacing the cylinder.
Machine Setup
Fine-tune the end position during initial commissioning to achieve precise mechanical alignment on long-stroke assemblies.
Variable End Stops
Adjust the pusher stroke dynamically on a material handling line to accommodate different box sizes within the 610-650mm window.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-40 the Right Cylinder?
Choose this 80mm bore when the 50mm class (982N push at 0.5MPa) lacks thrust but you want to avoid the bulk of a 100mm cylinder. The 40mm adjustment window is ideal for product changeovers, allowing you to fine-tune the end-of-stroke at commissioning rather than swapping a fixed-stroke SAI cylinder.
Because the 650mm stroke is long, the 25mm rod needs an external guide to prevent excessive side-loading. The rear adjuster acts purely as a travel stop for deceleration and does not hold the load without live air; for true load-holding, consider an external rod lock or the SAIL series. To match this ISO 15552 replacement, specify PT ports, an SUS420J2 rod, and no magnet.
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 SAIJ80AX650-40 FAQ
At 0.5MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7MPa, the push force increases to 3518N.
The rear adjuster screw lets you shorten the nominal 650mm stroke by up to 40mm, creating a usable travel window of 610 to 650mm. It functions as a mechanical stop to set the end position and does not lock the load without air pressure.
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