Airtac SAIJ80 Adjustable Cylinder SAIJ80BX300-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX300-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 300mm 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
- Stroke300 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 SAIJ80BX300-40S
The AirTAC SAIJ80X300-40-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 260-300 mm usable travel window by allowing you to dial back the 300 mm nominal stroke up to 40 mm without adding external stops. In the 80 mm bore class, it delivers 2513 N pull force at 0.5 MPa and reaches speeds of 30-800 mm/s.
This variant features a SUS304 stainless steel rod for corrosion resistance and a built-in magnet for position sensing with CMSE reed or DMSE electronic switches. The extruded aluminum barrel includes sensor grooves on both sides. Mounting options follow the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX300-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX300-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 300 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 SAIJ80BX300-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SAIJ80BX300-40S Is Used
Product Changeover
Dial in the 260-300 mm retract end-stop during packaging line format changes without swapping cylinders or adding external mechanical stops.
Machine Setup
Fine-tune the final end position at commissioning to absorb mechanical tolerances, ensuring precise placement using the 80 mm bore's 2513 N pull force.
Variable End Stops
Adjust the travel window on the fly for automated assembly equipment requiring flexible positioning within a 40 mm range.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX300-40S the Right Cylinder?
Choose this 80 mm bore when an application requires 2513 N pull force at 0.5 MPa and precise end-position tuning during commissioning. If your process demands less force, stepping down to a 63 mm bore yields 1402 N pull. The 40 mm rear adjustment screw acts purely as a mechanical stop to fine-tune the retract position on product changeovers; it does not lock or hold the load without live air. For true fail-safe load holding, consider an external rod lock, or explore the SAIL or BSAI series.
This cylinder is dimensionally interchangeable per ISO 15552. To match this exact configuration, specify an 80 mm bore, 300 mm stroke, 40 mm adjustment, PT tapered ports, and the -S magnet option. Because the stroke is 300 mm, the 25 mm rod and M20x1.5 thread provide robust rigidity, but an external guide is recommended to prevent side-load binding on long unsupported travels.
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 SAIJ80BX300-40S 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 300 mm nominal stroke by up to 40 mm, creating a 260-300 mm usable travel window. It decelerates and sets the end position but does not lock or hold the load without continuous live air pressure.
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