Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 900mm 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
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-75
The AirTAC SAIJ80X900-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window from 825 to 900 mm during commissioning. Delivering 4523 N of push force at 0.9 MPa, it is built with a durable SUS304 stainless steel rod and utilizes PT tapered port threads.
This adjustable-stroke design eliminates the need to swap cylinders or add external stops when dialing in the retract end position. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting, while the rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 900 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 SAIJ80BX900-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×900 | 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 SAIJ80BX900-75 Is Used
Machine Setup & Changeover
Dial in the 825-900 mm travel window during line changeovers to accommodate new product lengths without physically swapping out the actuator.
Variable End Stops
Adjust the retract position on the fly to fine-tune where a diverter or pusher meets the passing product on the conveyor belt.
Long-Stroke Assembly Stations
Use the 4523 N of thrust to drive heavy carriage assemblies over a 900 mm span, making precise end-position tweaks at commissioning.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-75 the Right Cylinder?
Choose this 80 mm bore when you need substantial thrust—stepping up from a 63 mm bore increases push force from 2805 N to 4523 N at 0.9 MPa. The 75 mm adjustment range is ideal for product changeovers on a line, letting you shift the end-stop without replacing the hardware. Because the nominal stroke is 900 mm, an external guide is strongly recommended to prevent excessive side-loading on the rod and thread.
For load-holding applications without live air, note that the SAIJ rear stopper and air cushions do not function as a lock; consider an AirTAC SAIL or BSAI cylinder instead. This model is dimensionally interchangeable per ISO 15552 and features PT ports, SUS304 rod material, and a mounting set limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80BX900-75 FAQ
At an operating pressure of 0.9 MPa, this 80 mm bore double-acting cylinder generates 4523 N of push force and 4071 N of pull force. It operates at speeds between 30 and 800 mm/s.
The rear adjuster screw lets you shorten the 900 mm nominal stroke by up to 75 mm, providing an effective travel window of 825 to 900 mm. The adjuster acts only as a mechanical stop and does not lock the load without live air pressure.
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