Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 550mm 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
- Stroke550 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-75
The AirTAC SAIJ80X550-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 550 mm stroke that can be fine-tuned backward, delivering a usable travel window of 475-550 mm to perfect end positions during machine setup. It delivers 3518 N of push force and 2268 N of pull force at 0.7 MPa.
This SKU utilizes a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads (G3/8). The extruded aluminum barrel includes sensor grooves on both sides, although position detection requires adding a magnet. The rear adjuster acts purely as a travel stop to set deceleration and cannot hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 550 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 SAIJ80BX550-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×550 | 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 SAIJ80BX550-75 Is Used
Product Changeover Setup
Dial in the exact retract distance from 475 to 550 mm during line changeovers to accommodate different product lengths without physically swapping cylinders.
End-Position Tuning
Fine-tune the final deceleration point at commissioning using the rear stopper, avoiding the need to bolt on external physical stops to the machine frame.
Long-Stroke Forming
Leverage the 3518 N push force at 0.7 MPa for pressing or forming tasks where the exact bottoming position varies and requires on-the-fly adjustment.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX550-75 the Right Cylinder?
Select this 80 mm bore when an application requires high thrust (3518 N push at 0.7 MPa) alongside variable end-stop positioning. If you need less force, the 63 mm bore offers 2182 N push, while stepping up to the 100 mm bore provides 5497 N. Choose this adjustable-stroke variant over a fixed SAI cylinder when you need to dial in the exact retract distance during commissioning or product changeovers without swapping the physical cylinder.
Because the 550 mm stroke is long, an external guide is recommended to prevent excessive side loading on the SUS304 rod. For load-holding without continuous air pressure, this standard cylinder is insufficient; the rear stop is not a lock, so consider an external pilot-operated check valve or the SAIL series instead. Mounting options include 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 SAIJ80BX550-75 FAQ
The rear adjuster screw allows you to trim the effective stroke by up to 75 mm. This creates a usable travel window of 475 to 550 mm, letting you set the exact retract end-position without replacing the cylinder.
At an operating pressure of 0.7 MPa, the SAIJ80X550-75 provides 3518 N of push force and 2268 N of pull force. The maximum thrust is 513 kgf at 1.0 MPa.
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