Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-50 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 SAIJ80BX475-50
The AirTAC SAIJ80X475-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 475 mm stroke that can be dialed back by up to 50 mm, creating a 425-475 mm usable travel window for precise end-position tuning. Delivering 2513 N of push force at 0.5 MPa, it handles robust actuation tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This configuration features a SUS304 stainless steel rod for corrosion resistance and uses PT tapered port threads (G3/8). The rear adjuster acts strictly as a mechanical stop to set the travel end; it does not hold the load without live air pressure. For position holding without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-50 |
|---|---|
| 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 SAIJ80BX475-50
| 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 SAIJ80BX475-50 Is Used
Variable End-Stop Positioning
Dial in the exact retract distance within the 425-475 mm window to accommodate different material lengths without physically relocating the cylinder.
Machine Setup & Changeover
Quickly fine-tune the end-of-stroke position during product line changeovers, eliminating the need to fabricate and bolt on custom external stops.
Product-Size Adaptation
Adjust the travel limit on the fly to handle varying package dimensions moving down a conveyor, ensuring consistent positioning before secondary processing.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX475-50 the Right Cylinder?
Choose this 80 mm bore when 50 mm bore thrust (982 N push at 0.5 MPa) is insufficient, but a 100 mm bore (3927 N at 0.5 MPa) is oversized. The 50 mm adjustment range is selected when machinery requires frequent product-size changeovers, allowing you to fine-tune the retract end position at commissioning without swapping cylinders or adding external stopper blocks. Because the 475 mm stroke is substantial, an external guide is recommended to manage side loads and prevent rod binding over long unsupported travel.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 475 mm stroke, 50 mm adjustment, PT G3/8 port, and standard mounting interface. The SAIJ uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. As no magnet is specified, this unit does not support CMSE or DMSE sensors.
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 SAIJ80BX475-50 FAQ
At 0.5 MPa operating pressure, the 80 mm bore provides 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 513 kgf.
The rear adjuster screw lets you shorten the effective stroke by up to 50 mm, providing a usable travel window of 425 to 475 mm. The adjuster functions as a mechanical stop and does not lock or hold the load without continuous air pressure.
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