Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 80mm 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
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-75S
The AirTAC SAIJ80X80-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 5 to 80 mm. Delivering a push force of 2513 N at 0.5 MPa, it handles demanding actuation tasks while allowing precise end-position tuning during commissioning without swapping out the unit. The extruded aluminum barrel features sensor grooves on both sides.
This specific SKU incorporates a SUS304 stainless steel rod for superior corrosion resistance and features a built-in magnet compatible with AirTAC CMSE reed and DMSE electronic sensors. The rear screw acts purely as a travel stop for deceleration and positioning, meaning it cannot hold a load without continuous live air pressure. For load-holding requirements, consider an external rod lock or the SAIL series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAIJ80BX80-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SAIJ80BX80-75S Is Used
Variable End-Stop Positioning
Ideal for assembly stations requiring frequent adjustments to the final end position, using the 75 mm adjustment window to accommodate multiple product lengths without mechanical rebuilds.
Product Changeover Diverter
Provides a fast 5 to 80 mm travel window to reposition conveyor diverters or pushers during packaging line size changeovers, ensuring rapid format resets.
Corrosive Environment Actuation
The SUS304 stainless steel rod makes this 2513 N thrust cylinder well-suited for food processing or chemical plants where moisture and washdowns would degrade standard carbon steel rods.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX80-75S the Right Cylinder?
Select this 80 mm bore cylinder when an application requires substantial force, stepping up from the 50 mm bore which provides 982 N of push force at 0.5 MPa. The adjustable stroke is ideal for product-size changeovers on a line, allowing operators to dial in the exact end-stop without adding external stops. When specifying a replacement, ensure you match the 80 mm bore, 80 mm stroke, 75 mm adjustment, PT G3/8 port, and the -S magnet requirement. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because the 25 mm rod and M20x1.5 thread provide robust side-load capacity, this cylinder handles moderate bending moments well. However, even with a sturdy rod, any application approaching the maximum stroke limits should utilize an external guide rail to prevent premature seal wear. The operating speed ranges from 30 to 800 mm/s.
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 SAIJ80BX80-75S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder generates a push force of 2513 N and a pull force of 2268 N. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster allows you to trim the effective travel back by up to 75 mm from the nominal 80 mm stroke, creating a usable window of 5 to 80 mm. It functions as a mechanical stop and does not lock the load without live air pressure.
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