Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-20S 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 SAIJ80AX800-20S
The AirTAC SAIJ80X800-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 2513N push force at 0.5 MPa. It features an extruded aluminum barrel with sensor grooves on both sides and a SUS420J2 stainless steel rod. With an 800mm nominal stroke and a 20mm adjustment range, you can fine-tune the effective travel anywhere within a 780-800mm window.
This adjustable-stroke design allows precise end-position tuning during commissioning without swapping the cylinder or adding external stops. The rear screw acts as a travel stop for deceleration, not a lock, so it will not hold a load without live air. It includes a magnet for CMSE reed and DMSE electronic sensors, uses a PT tapered port, and operates at speeds of 30-800mm/s.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-20S |
|---|---|
| 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 SAIJ80AX800-20S
| 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 SAIJ80AX800-20S Is Used
Variable End-Stop Positioning
Dial in the exact retraction point within the 780-800mm window during machine commissioning to accommodate varying product lengths without external stopper blocks.
Long-Stroke Assembly Press
Leverage the 2513N push force and 800mm travel for large assembly tasks, using the fine 20mm rear adjustment to set the precise final pressing depth.
Product Changeover Diverter
Quickly re-tune the stroke on a conveyor sorting line when switching package sizes, using the rear adjuster to shift the diverting endpoint by up to 20mm.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-20S the Right Cylinder?
Choose this 80mm bore when you need higher thrust than a 63mm cylinder (which provides 1559N push at 0.5 MPa) but want to avoid the larger fluid consumption of a 100mm bore. The adjustable 780-800mm window is ideal for applications requiring exact end-stop positioning during machine setup or product changeover. Because the stroke is 800mm, the 25mm rod diameter requires external guiding to prevent excessive side-loading on the piston.
For a direct ISO 15552 replacement match, verify the 80mm bore, 800mm stroke, 20mm adjustment, PT port threads, and the -S magnet. It uses the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) but omits FB, CA, CB, and CR mounts. If your application requires true load-holding without continuous air pressure, consider an AirTAC SAIL or BSAI cylinder instead.
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 SAIJ80AX800-20S FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 20mm, providing a usable travel window of 780-800mm. This allows you to fine-tune the end position at commissioning without changing the cylinder or adding external stops.
At 0.5 MPa operating pressure, the SAIJ80X800-20-S provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
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