Airtac SAIJ80 Adjustable Cylinder SAIJ80BX400-75
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX400-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 400mm 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
- Stroke400 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 SAIJ80BX400-75
The AirTAC SAIJ80X400-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end-of-travel position. With a 400 mm nominal stroke and a 75 mm adjustment range, it provides a highly flexible 325-400 mm usable travel window. The extruded aluminum barrel includes sensor grooves on both sides, and because this specific configuration uses a SUS304 stainless steel rod, it provides excellent corrosion resistance for harsh or washdown environments.
The rear adjuster acts strictly as a mechanical stop to set the retract position during commissioning or product changeovers, eliminating the need to swap out the entire cylinder or bolt on external stops. It is important to note that this adjuster is not a locking device; the cylinder cannot hold a load without continuous live air pressure. For applications requiring true load-holding, AirTAC SAIL or BSAI series cylinders are recommended instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX400-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX400-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 400 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 SAIJ80BX400-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×400 | 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 SAIJ80BX400-75 Is Used
Product Changeover Lines
Dial in the exact retract stop for varying package sizes on a conveyor without physically swapping out the pneumatic cylinder.
Machine Setup Tuning
Fine-tune the end-of-stroke position during initial commissioning to perfect a pressing operation within the 325-400 mm travel window.
Washdown Actuation
Leverage the SUS304 stainless steel rod for positioning heavy gates or doors in food processing environments requiring high thrust.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX400-75 the Right Cylinder?
Selecting this 80 mm bore model makes sense when your application requires high force and variable end-position tuning, stepping up from a 50 mm bore that only provides 825 N of pull force at 0.5 MPa. The adjustable stroke is ideal for machine setups that undergo frequent product-size changeovers, allowing operators to dial in the exact retract distance within the 325-400 mm window rather than maintaining a massive inventory of fixed-stroke SAI cylinders.
Because the 400 mm stroke is relatively long, the 25 mm rod diameter and M20x1.5 rod thread must be factored into your mechanical design; while the robust rod handles standard loads well, an external guide should be used to prevent excessive side-loading on the unsupported length. This configuration features PT tapered ports and omits the -S magnet option, meaning it will not work with CMSE or DMSE sensors out of the box. It uses the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and is dimensionally interchangeable per ISO 15552.
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 SAIJ80BX400-75 FAQ
It can deliver a maximum force of 513 kgf at 1.0 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the 400 mm nominal stroke by up to 75 mm, creating a usable travel window of 325-400 mm. It sets the end position but does not lock or hold the load without live 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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