Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX75-20S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-20S
The AirTAC SAIJ80X75-20-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. The integrated -20 adjustment code allows you to dial back the 75 mm nominal stroke, creating a precise 55-75 mm usable travel window for fine-tuning end positions at commissioning.
This variant features a SUS304 stainless steel rod (code B) for superior corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel provides sensor grooves on both sides, and the rear stopper allows product changeovers without adding external stops or replacing the cylinder.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-20S |
|---|---|
| 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-20S
| 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 SAIJ80BX75-20S Is Used
Variable End-Stop Tuning
Dial in the exact 55 to 75 mm retract position during machine commissioning to accommodate slight mechanical variations without machining new hard stops.
Product Size Changeover
Quickly adjust the cylinder's travel window on packaging lines when switching between different product sizes, minimizing downtime and tooling changes.
Corrosion-Resistant Actuation
Leverage the SUS304 stainless steel rod in humid or washdown manufacturing environments while maintaining standard ISO 15552 mounting interchangeability.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-20S the Right Cylinder?
The adjustable stroke is ideal for machine setups requiring a variable end-stop, letting you trim the retract position by up to 20 mm on the fly instead of swapping to a fixed-stroke SAI cylinder. Mounting options include the reduced SAIJ set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
To replace an ISO 15552 cylinder, match the 80 mm bore, 75 mm stroke, PT tapered port threads, and the -S magnet requirement. Remember that the rear adjuster functions strictly as a travel stop, not a lock; the SAIJ80X75-20-S cannot hold a load without live air pressure. For fail-safe load holding, consider an external rod lock, a pilot-operated check valve, or the AirTAC SAIL and BSAI locking cylinder series.
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 SAIJ80BX75-20S FAQ
At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 75 mm nominal stroke by up to 20 mm, providing a usable travel window of 55 to 75 mm. It only sets the end position and does not lock the load without continuous air pressure.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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