Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-75S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-75S
The AirTAC SAIJ80X300-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits a usable travel window of 225 to 300 mm. It delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, placing it in a robust thrust class for heavy actuation. The extruded aluminum barrel includes sensor grooves on both sides, and because this unit includes a magnet (-S), it is fully compatible with AirTAC CMSE reed and DMSE solid-state switches.
This SKU is configured with an SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and features PT tapered port threads. The rear adjuster acts strictly as a mechanical stop to fine-tune the end position; it does not lock the load without live air pressure. Mounting options utilize the standard SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-75S |
|---|---|
| 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 | 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 SAIJ80AX300-75S
| 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 SAIJ80AX300-75S Is Used
Product Changeovers
Dial in the end-stop from 225 to 300 mm during packaging format changes without bolting on external stops or replacing the cylinder.
End-Position Tuning
Fine-tune the retract position at machine commissioning to perfect pressing or clamping depth, using the rear screw to set the exact travel limit.
Variable Stops on Conveyors
Adjust the physical travel limit on the fly for diverter arms or gating mechanisms that must handle varying package sizes on a single line.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX300-75S the Right Cylinder?
Choose this 80 mm bore when an application requires more force than a 63 mm cylinder (which provides 1559 N push at 0.5 MPa) but less than the massive 3927 N output of a 100 mm unit. The adjustable stroke is selected over a fixed SAI model when manufacturing lines undergo frequent product changeovers, allowing operators to dial in the exact end-stop without swapping hardware or adding external stops. Because the nominal stroke is 300 mm, the 25 mm rod diameter and M20x1.5 rod thread provide rigidity, but an external guide is still recommended to prevent excessive side-loading on long unsupported travels.
For an exact ISO 15552 replacement, match the 80 mm bore, 300 mm nominal stroke, 75 mm adjustment range, PT port threads, and the -S magnet requirement. If the machine demands true load-holding without continuous air pressure, a plain SAIJ cannot perform this function; consider an AirTAC SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead.
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 SAIJ80AX300-75S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. The standard speed range for this bore size is 30-800 mm/s.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 300 mm nominal stroke down to 225 mm. It sets the end position but does not hold the load without live air pressure.
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