Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 500mm 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
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-75
The AirTAC SAIJ80X500-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to fine-tune the effective travel down to 425 mm from the 500 mm nominal stroke. Delivering a robust 4523 N of push force at 0.9 MPa, it is built with a SUS304 stainless steel rod for corrosion resistance and uses PT tapered ports.
The rear adjuster functions purely as a mechanical stop to dial in end positions during commissioning or product changeovers, meaning it will not hold the load without live air pressure. This extruded aluminum profile barrel includes sensor grooves on both sides, and its G3/8 porting ensures adequate flow for its 30-800 mm/s operating speed range.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 500 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 SAIJ80BX500-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×500 | 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 SAIJ80BX500-75 Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 425-500 mm window during machine setup without adding external stopper blocks.
Product Size Changeover
Quickly adapt long-stroke automation lines to different part lengths by adjusting the rear screw rather than replacing the cylinder.
High-Force Positioning
Leverage the 4523 N push force for heavy-duty handling tasks while maintaining precise control over the final end-of-stroke position.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX500-75 the Right Cylinder?
Choose this 80 mm bore when an application requires high thrust (up to 4523 N push at 0.9 MPa) alongside a flexible 425-500 mm travel window, stepping up from a 63 mm bore that provides 2805 N. Because the 500 mm stroke is long and unsupported, adding an external guide is recommended to prevent rod side-loading damage, even with the sturdy M20x1.5 rod thread.
The adjustable stroke is ideal for machinery requiring frequent product-size changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. If your process demands true load-holding without continuous air pressure, this cylinder is not a lock; you would need to specify an SAIL or BSAI model, or integrate an external rod lock.
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 SAIJ80BX500-75 FAQ
At an operating pressure of 0.9 MPa, this 80 mm bore double-acting cylinder generates a push force of 4523 N and a pull force of 2268 N.
The rear adjuster acts as a mechanical stop that lets you shorten the 500 mm nominal stroke by up to 75 mm, providing a usable travel window of 425-500 mm. It sets the end position but does not lock or hold the load without live air pressure.
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