Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-10S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-10S 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 SAIJ80BX850-10S
The AirTAC SAIJ80X850-10-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 850 mm stroke that can be dialed back by up to 10 mm, yielding a precise 840-850 mm usable travel window for exact end-position tuning. Operating at 0.9 MPa, it delivers 4523 N of push force and 2268 N of pull force, making it suitable for moving heavy loads.
This variant includes a SUS304 stainless steel rod (option B) for corrosion resistance and ships with a -S magnet for electronic DMSE or reed CMSE position sensing. The extruded aluminum barrel incorporates sensor grooves on both sides, and the rear adjuster acts purely as a travel stop to fine-tune deceleration, not as a load-holding brake.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-10S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-10S |
|---|---|
| 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 SAIJ80BX850-10S
| 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 SAIJ80BX850-10S Is Used
Product Size Changeovers
Dial in the 10 mm travel window during machine setup to accommodate varying product lengths without physically replacing the actuator.
End-Stop Calibration
Use the rear adjusting screw to fine-tune the exact retract position on an 850 mm stroke, ensuring precise machinery alignment.
Heavy Material Handling
Leverage the 4523 N push force at 0.9 MPa to shift heavy pallets or assemblies, relying on the SUS304 rod for durability.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-10S the Right Cylinder?
Choose this 80 mm bore when 50 mm (1374 N push at 0.7 MPa) is too weak but 100 mm (5497 N push at 0.7 MPa) is oversized. The 10 mm adjustable range is ideal for product changeovers, letting you shift the end stop without swapping the cylinder. Because the 850 mm stroke is long, use an external guide to prevent side-loading on the M20x1.5 rod thread. To match this ISO 15552 footprint, specify an 80 mm bore, 850 mm stroke, PT tapered ports, a Basic/LB/TC mounting set, and the -S magnet.
If your application requires the load to stay held without live air pressure, note that the SAIJ adjuster is only a stop. You must use an external pilot-operated check valve or switch to an AirTAC SAIL or BSAI clamp-lock cylinder for secure load holding.
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 SAIJ80BX850-10S FAQ
At 0.9 MPa, this 80 mm bore cylinder provides 4523 N of push force and 2268 N of pull force. It operates at speeds between 30 and 800 mm/s.
The rear adjuster allows you to shorten the 850 mm nominal stroke by up to 10 mm, creating an effective 840-850 mm travel window. It acts as a mechanical stop to tune the end position and does not lock the load without live air.
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