Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 75mm 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
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-50S
The AirTAC SAIJ80X75-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N of push force at 0.5MPa and features a 25mm SUS304 stainless steel rod. Because of the 50mm adjustment code on this 75mm nominal stroke, you can dial the effective travel back to anywhere in a 25-75mm window during commissioning without swapping hardware.
This variant includes a magnet for CMSE reed and DMSE electronic sensors, utilizing the dual sensor grooves machined into the extruded aluminum barrel. The rod and ports are PT tapered thread, and the mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2. Remember that the rear adjuster acts only as a travel stop; it will not hold a load without live air.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 75 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 SAIJ80BX75-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×75 | 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 SAIJ80BX75-50S Is Used
Product Changeovers
Dial in the exact end-of-stroke position for different package sizes on a conveyor without physically replacing the cylinder or adding external stops.
Machine Setup
Fine-tune the 25-75mm travel window during initial commissioning to perfect the pressing or clamping force against the workpiece.
Variable End Stops
Use the rear adjuster screw to safely shorten the effective stroke on the fly for diverse assembly operations requiring different reach distances.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-50S the Right Cylinder?
Choose this 80mm bore when an application requires more thrust than a 63mm cylinder (which provides 1559N push at 0.5MPa) but has tight spatial limits. The 50mm adjustment range is particularly useful for product-size changeovers on a packaging line, allowing operators to set variable end stops on the fly rather than machining external stopper blocks. If the machine cycle requires the load to be held securely without continuous air pressure, a standard SAIJ is insufficient; you should step up to an SAIL air-released lock cylinder or a BSAI clamp-lock model. To match this ISO 15552 interchangeable cylinder exactly, specify the 80mm bore, 75mm stroke, 50mm adjustment, PT port thread, SUS304 rod, and the -S magnet.
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 SAIJ80BX75-50S FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the 75mm nominal stroke by up to 50mm, providing a usable travel window of 25-75mm. It only sets the travel end and does not lock or hold the load without live air pressure.
At 0.5MPa operating pressure, it provides 2513N of push force and 2268N of pull force. At 0.7MPa, the push force increases to 3518N.
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