Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-40 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 SAIJ80BX900-40
The AirTAC SAIJ80X900-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 900 mm travel by up to 40 mm. This yields a precise 860-900 mm usable window for fine-tuning the retract position without swapping hardware. It delivers robust thrust, pushing with 2513 N and pulling with 2268 N at 0.5 MPa, making it suitable for heavy loads.
This unit features a SUS304 stainless steel rod for superior corrosion resistance and operates within a 30-800 mm/s speed range. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-40 |
|---|---|
| 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 SAIJ80BX900-40
| 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 SAIJ80BX900-40 Is Used
Product Changeover
Dial in the 860-900 mm retract position during line format changes to accommodate different product lengths without adding external stopper blocks.
Heavy Material Handling
Leverage the 2513 N push force at 0.5 MPa to move heavy pallets or workpieces, relying on the SUS304 rod for durability in harsh environments.
Machine Setup Calibration
Fine-tune the end-of-stroke position during initial commissioning to perfectly time machine operations, avoiding the need to physically swap cylinders.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX900-40 the Right Cylinder?
Select this 80 mm bore when an application requires high force, such as the 3518 N push at 0.7 MPa, combined with variable end-stop positioning. If your setup needs less force, stepping down to a 63 mm bore offers 1559 N at 0.5 MPa. The 40 mm adjustment is ideal for product changeovers, letting you shift the retract end-position at commissioning rather than installing external stops. Because the 900 mm stroke is long, an external guide is recommended to manage side loads.
The rear screw acts purely as a travel stop and works alongside the standard air cushions to decelerate the load, but it does not hold the load without live air. For dead-air load holding, consider the SAIL (lock) or BSAI (clamp-lock) series. This SAIJ variant uses PT tapered ports, a SUS304 rod, and no magnet, ensuring dimensionally interchangeable per ISO 15552 mounting.
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 SAIJ80BX900-40 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides a push force of 2513 N and a pull force of 2268 N. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster acts as a stopper that trims the effective travel. For this 900 mm stroke model, you can shorten the stroke by up to 40 mm, creating an adjustable 860-900 mm travel window. It is a stop, not a lock, and requires live air to hold position.
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