Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-100
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 850mm 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
- Stroke850 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-100
The AirTAC SAIJ80X850-100 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 750-850mm, letting you trim the effective stroke by up to 100mm during commissioning without swapping hardware.
Equipped with a SUS420J2 stainless steel rod for superior corrosion resistance, this model uses PT tapered G3/8 ports. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement, while the rear stopper acts purely as a travel end-limit, not a load-holding lock.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 850 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 SAIJ80AX850-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×850 | 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 SAIJ80AX850-100 Is Used
Variable End Stops
Dial in the exact 750-850mm retraction point during machine setup to accommodate different material lengths without mechanical retooling.
Product Changeover
Quickly adjust the rear stopper by up to 100mm on packaging lines to handle varying box sizes on the fly.
Long-Stroke Positioning
Leverage the 2513N push force at 0.5MPa for moving heavy assemblies across an 850mm span with fine-tuned end positioning.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-100 the Right Cylinder?
Choose this 80mm bore when an application requires substantial thrust, stepping up from a 63mm bore that yields 1559N push force at 0.5MPa. The 100mm adjustment range is ideal for product changeovers on a line, allowing variable end-stops without adding external stops. For holding loads without live air pressure, select a SAIL or BSAI cylinder instead, as the SAIJ adjuster is only a stop.
When replacing an ISO 15552 cylinder, match the 80mm bore, 850mm stroke, 100mm adjustment, PT G3/8 port, and mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the 850mm stroke is long, an external guide is recommended to prevent excessive side-loading on the 25mm rod. This non-magnet model operates at 30-800mm/s.
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 SAIJ80AX850-100 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 allows you to shorten the nominal 850mm stroke by up to 100mm, creating a usable travel window of 750-850mm. It functions as a mechanical stop for end-position tuning and is not a lock.
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