Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 800mm 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
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-50S
The AirTAC SAIJ80X800-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 750-800 mm from its 800 mm nominal stroke. Delivering 3518 N of push force at 0.7 MPa, it is built with a SUS420J2 stainless steel rod and includes a magnet for CMSE and DMSE sensors. The extruded aluminum barrel features sensor grooves on both sides for flexible switch mounting.
This model uses PT tapered ports sized at G3/8 and achieves a standard operating speed of 30-800 mm/s. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning without adding external stops; it does not lock or hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 800 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 SAIJ80AX800-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×800 | 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 SAIJ80AX800-50S Is Used
Machine Setup & Changeover
Dial in the exact retract end-stop during commissioning or product size changes, adjusting the travel window from 750 to 800 mm without physically replacing the actuator.
Variable End-Stop Positioning
Ideal for diverter arms or pushers on a packaging line that occasionally need a shortened return stroke to accommodate different carton widths.
Long-Stroke Assembly Press
Provides 3518 N of thrust at 0.7 MPa for pressing or seating components, using the rear stopper to fine-tune the final lower dead center.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-50S the Right Cylinder?
Choose this 80 mm bore cylinder when an application requires substantial thrust, such as 3518 N at 0.7 MPa, but demands less force than the 100 mm bore option which provides 5497 N. The 50 mm adjustment range is ideal for product changeovers on a line, allowing you to dial back the stroke from 800 mm to 750 mm without swapping the cylinder. For load-holding requirements without live pressure, consider the SAIL or BSAI series instead of relying on the SAIJ adjuster.
When replacing an ISO 15552 cylinder, verify the 80 mm bore, 800 mm stroke, 50 mm adjustment, G3/8 PT ports, and the -S magnet. Because this unit features an 800 mm stroke, the 25 mm rod and M20x1.5 thread carry significant side loads; an external guide rail is recommended to prevent rod sag and premature seal wear. 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 SAIJ80AX800-50S FAQ
The rear adjuster is a mechanical stop that lets you trim the effective travel back by up to 50 mm, creating a 750-800 mm usable window. It sets the end position but does not lock the load without continuous air pressure.
At a 0.7 MPa operating pressure, the SAIJ80X800-50-S generates 3518 N of push force and 2268 N of pull force. The maximum theoretical force at 1.0 MPa is 513 kgf.
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