Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 475mm 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
- Stroke475 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-50S
The AirTAC SAIJ80X475-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 425 to 475 mm. Delivering a robust 4523 N push force at 0.9 MPa, this 80 mm bore actuator handles demanding positioning tasks. The integrated -S magnet enables position feedback via AirTAC CMSE reed or DMSE electronic sensors housed in the dual-side barrel grooves.
This model features a SUS304 stainless steel rod for superior corrosion resistance and carries a G3/8 port. The rear stopper mechanism allows precise end-position tuning during commissioning without adding external stops. Remember that this adjuster acts solely as a travel limit and does not hold the load without continuous air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 475 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 SAIJ80BX475-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×475 | 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 SAIJ80BX475-50S Is Used
Product Changeover
Dial in the exact 425 to 475 mm retract distance during format size changes without physically replacing the actuator or bolting on external stopper blocks.
Machine Setup Tuning
Fine-tune the end-of-stroke position at commissioning to achieve precise mechanical alignment, utilizing the 2513 N pull force at 0.5 MPa to verify tooling clearance.
Variable End Stops
Adjust the rear stopper screw to accommodate varying material lengths on a processing line, relying on the robust 80 mm profile barrel for heavy-duty cycling.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-50S the Right Cylinder?
Select this 80 mm bore actuator when an application requires substantial force, stepping up from the 63 mm bore that yields 2805 N push at 0.9 MPa. The 50 mm adjustment window is ideal for product changeovers, allowing operators to dial in the exact retract distance on the fly instead of swapping a fixed-stroke SAI cylinder. For load-holding without live air pressure, this standard adjuster will not suffice; consider an AirTAC SAIL or BSAI locking cylinder instead.
Because this 475 mm stroke exceeds 300 mm, the 25 mm diameter SUS304 rod will experience amplified leverage under lateral stress, meaning an external guide rail is necessary to prevent premature seal wear. To ensure seamless ISO 15552 mounting interchangeability, verify the PT port thread, select from Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounts, and confirm the -S magnet requirement.
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 SAIJ80BX475-50S FAQ
At 0.9 MPa operating pressure, this 80 mm bore cylinder provides a push force of 4523 N and a pull force of 3681 N. It achieves a maximum push force of 513 kgf at 1.0 MPa.
The rear adjuster acts as a mechanical stop that shortens the nominal 475 mm stroke by up to 50 mm, creating a 425 to 475 mm usable travel window. It sets the end position but does not lock or hold the load without continuous air pressure.
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