Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-75S 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 SAIJ80AX650-75S
The AirTAC SAIJ80X650-75-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 575 to 650 mm, allowing you to dial back the end position by up to 75 mm during commissioning without adding external stops. Delivering a robust 2268 N pull force at 0.5 MPa, it handles heavy linear loads with precision.
This variant includes a SUS420J2 stainless steel rod for superior corrosion resistance and a magnetic piston for position detection. It supports AirTAC CMSE reed and DMSE electronic sensors via the dual-side sensor grooves. The rear adjuster acts purely as a travel stop to fine-tune deceleration, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-75S |
|---|---|
| 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 SAIJ80AX650-75S
| 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 SAIJ80AX650-75S Is Used
Product Changeover
Rapidly re-tune the 575-650 mm retract stop when switching machinery to handle a different pallet or package size.
Variable End Stops
Dial in the exact clamping distance on the fly without physically swapping out the entire actuator.
Machine Setup
Fine-tune the final end position during initial commissioning to perfect timing and avoid mechanical hard crashes.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-75S the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (offering 825 N pull at 0.5 MPa) is insufficient, but a 100 mm bore (3681 N pull) would be oversized. The 75 mm adjustment range is ideal for production lines running mixed product sizes, letting operators reposition the retract end-stop rapidly. For load-holding without live air, select a SAIL pneumatic lock or BSAI clamp-lock cylinder instead of relying on the adjuster.
Because the 650 mm stroke is substantial, the 25 mm rod and M20x1.5 thread still require an external guide to prevent side-loading damage. To match this ISO 15552 footprint, specify an 80 mm bore, 650 mm nominal stroke, 75 mm adjustment, PT tapered G3/8 ports, and a -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ80AX650-75S FAQ
At a 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. It operates efficiently at speeds between 30 and 800 mm/s.
The rear adjuster lets you shorten the 650 mm nominal stroke by up to 75 mm, creating a 575 to 650 mm usable travel window. It functions as a hard stop for end-position tuning and does not lock the load without live air.
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