Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-100
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-100 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 SAIJ80BX850-100
The AirTAC SAIJ80X850-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 850 mm stroke that can be dialed back by up to 100 mm, yielding a 750-850 mm usable travel window. Delivering 3518 N of push force at 0.7 MPa, it is built with an SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads.
This extruded aluminum profile cylinder includes sensor grooves on both sides, though this specific SKU omits the magnet. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning; it does not lock the load without continuous air pressure. For load-holding requirements, an external SAIL or BSAI locking cylinder is required.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-100 |
|---|---|
| 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 SAIJ80BX850-100
| 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 SAIJ80BX850-100 Is Used
Variable Length Diverter
Adjusts the retract position of a diverter arm on a conveyor to handle different package lengths without changing the cylinder setup.
Machine Commissioning
Allows engineers to fine-tune the 750-850 mm travel window during equipment setup to achieve precise end-of-stroke positioning.
Product Size Changeover
Facilitates rapid line changeovers for varying product sizes by simply rotating the rear adjuster screw to modify the stroke end point.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX850-100 the Right Cylinder?
Select this 80 mm bore cylinder when an application requires substantial force—delivering 2513 N at 0.5 MPa—over a long 850 mm travel distance, but needs precise end-position tuning without swapping components. If less force is needed, stepping down to a 63 mm bore provides 1559 N at 0.5 MPa. Because the stroke exceeds 300 mm, the 25 mm rod diameter requires external guiding to prevent excessive side-loading and premature seal wear.
The adjustable stroke is ideal for product changeovers on a line, allowing operators to trim the travel window by up to 100 mm via the rear stopper rather than installing a fixed SAI cylinder of a different length. This model uses PT tapered ports and supports the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ80BX850-100 FAQ
At an operating pressure of 0.7 MPa, this 80 mm bore cylinder provides a push force of 3518 N and a pull force of 2268 N. At 0.5 MPa, the push force is 2513 N.
The rear adjuster allows you to shorten the effective stroke by up to 100 mm, creating a usable travel window of 750 to 850 mm. The adjuster functions as a mechanical stop and does not hold the load without live air pressure.
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