Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-75 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 SAIJ80BX475-75
The AirTAC SAIJ80X475-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 400 to 475 mm. Delivering 2513 N of push force at 0.5 MPa, it uses a robust 25 mm carbon steel rod with an M20x1.5 thread. This model omits the FB, CA, CB, and CR mounts, offering a streamlined set of ISO 15552 interfaces (Basic, FA, LB, TC, FTC, TCM1, TCM2) for straightforward integration.
This specific SKU is configured with a SUS304 stainless steel rod (option B) for superior corrosion resistance, along with PT tapered port threads and no integrated magnet. The built-in variable air cushions at both ends manage end-of-stroke deceleration, but remember the adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-75 |
|---|---|
| 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 SAIJ80BX475-75
| 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 SAIJ80BX475-75 Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 400-475 mm window during machine commissioning to perfect pressing or clamping depth.
Product Changeover Adjustment
Quickly adapt the cylinder stroke on automated lines when handling different product sizes, avoiding the need to physically swap out the entire actuator.
Diverter Positioning
Set precise diverting distances on conveyor systems where the exact physical stop point must be tweaked for varying package dimensions.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-75 the Right Cylinder?
Choose this 80 mm bore when an application requires more thrust than a 63 mm cylinder (which provides 1559 N push at 0.5 MPa) but does not need the massive output of a 100 mm unit (3927 N). The 75 mm adjustment range is particularly valuable for product-size changeovers on a line, allowing operators to dial in the exact end position without swapping hardware or adding external stops. For load-holding without continuous air pressure, this cylinder is insufficient; you should select a SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead.
Because the 475 mm stroke creates a long lever arm, an external guide rail is highly recommended to prevent excessive side-loading on the rod and premature seal wear. To replace an ISO 15552 cylinder of the same dimensions, match the 80 mm bore, 475 mm nominal stroke, 75 mm adjustment, PT port thread, and the specified mounting interface.
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 SAIJ80BX475-75 FAQ
At an operating pressure of 0.5 MPa, this 80 mm bore cylinder provides a push force of 2513 N and a pull force of 2268 N. At the maximum rated pressure of 1.0 MPa, it can deliver up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from its nominal 475 mm down to as little as 400 mm. This allows fine-tuning of the end position at commissioning without adding external stops, though it does not lock or hold the load without live air pressure.
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