Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-50 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 SAIJ80AX850-50
The AirTAC SAIJ80X850-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 2513N push force at 0.5MPa and uses a PT G3/8 port. The built-in adjustment mechanism allows you to trim the nominal 850mm stroke back by up to 50mm, creating a usable travel window of 800 to 850mm for precise end-position tuning at commissioning.
This 80mm bore actuator features an SUS420J2 stainless steel rod for corrosion resistance and carries a 36mm cushion length. It supports speeds of 30-800mm/s and accepts the reduced SAIJ mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU ships without a magnet for position detection.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-50 |
|---|---|
| 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 SAIJ80AX850-50
| 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 SAIJ80AX850-50 Is Used
Machine Setup Tuning
Dial in the exact 800 to 850mm travel window during commissioning to perfect end-of-stroke positions without machining external stoppers.
Product Size Changeover
Quickly adjust the retract end-stop by up to 50mm to accommodate varying product lengths on a packaging line.
Long-Stroke Assembly
Leverage the 2513N push force at 0.5MPa for long-travel pressing operations where the final contact position needs fine-tuning.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-50 the Right Cylinder?
Choose this 80mm bore cylinder when an application requires high thrust but demands on-site stroke variability without swapping actuators or adding external stops. If you need less force, stepping down to a 63mm bore yields 1559N push at 0.5MPa. Because the 850mm stroke is long, the 25mm rod diameter should be paired with an external guide to prevent excessive side-loading. The rear adjuster acts strictly as a travel stop, not a lock; for load-holding without live air pressure, select an SAIL or BSAI cylinder instead. To replace an ISO 15552 cylinder, match the 80mm bore, 850mm stroke, 50mm adjustment, PT G3/8 port, and your required mounting interface.
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 SAIJ80AX850-50 FAQ
At 0.5MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.9MPa, the push force increases to 4523N.
A rear external screw acts as a stopper to shorten the effective travel. For this SAIJ80X850-50 model, you can trim the 850mm nominal stroke back by up to 50mm, resulting in a usable travel range of 800 to 850mm.
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