Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-10
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-10 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 SAIJ80AX850-10
The AirTAC SAIJ80X850-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 850 mm travel by up to 10 mm for a precise 840 to 850 mm usable window. Delivering 2513 N of push force at 0.5 MPa, this 80 mm bore actuator features a SUS420J2 stainless steel rod for superior corrosion resistance and a PT tapered port thread for a reliable metal-to-metal seal.
The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting, while the variable air cushions at both ends manage deceleration over the long stroke. Because the rear adjuster acts strictly as a mechanical stop to set the end position, it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-10 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-10 |
|---|---|
| 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 SAIJ80AX850-10
| 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 SAIJ80AX850-10 Is Used
Machine Setup Tuning
Dial in the exact 840 to 850 mm end position during initial commissioning without machining custom spacers or changing the actuator.
Product Size Changeover
Quickly adjust the stroke stop by up to 10 mm when a production line switches to a slightly different package or part length.
Long-Stroke Assembly
Handle heavy workpiece positioning with 2513 N of thrust at 0.5 MPa, using the rear stopper to fine-tune the final approach distance.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-10 the Right Cylinder?
Choose this 80 mm bore if your application requires more thrust than the 50 mm bore (which provides 982 N push at 0.5 MPa) but less than the 100 mm class (3927 N). The 10 mm adjustment range is ideal for fine-tuning the end-of-stroke position during machine commissioning or product changeover, eliminating the need to swap cylinders or bolt on external stops. For load-holding without continuous air pressure, consider the SAIL or BSAI series instead.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 850 mm stroke, PT ports, and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). With an 850 mm stroke, the 25 mm rod diameter carries good side-load capacity, but an external guide is strongly recommended to prevent rod deflection and premature seal wear.
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 SAIJ80AX850-10 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder produces 2513 N of push force and 2268 N of pull force. It can deliver up to 4523 N of push force at its maximum 0.9 MPa rating.
The rear adjuster screw acts as a mechanical stop that shortens the effective travel from the 850 mm nominal stroke down to a minimum of 840 mm. This creates a 10 mm tuning window for setting the exact end position without removing the cylinder.
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