Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-20 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-20
The AirTAC SAIJ80X75-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 55-75 mm usable travel window. Delivering 2513 N of push force at 0.5 MPa, it handles robust actuation while allowing precise end-position tuning during commissioning without external stops.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-20 |
|---|---|
| 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 | 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 SAIJ80BX75-20
| 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 SAIJ80BX75-20 Is Used
Machine Changeover
Fine-tune the 55-75 mm travel window rapidly during product size changes without swapping out the entire cylinder assembly.
End-Stop Calibration
Dial in the exact retraction point during initial commissioning to prevent mechanical crashes and optimize cycle timing.
Corrosive Assembly Lines
Leverage the SUS304 stainless steel rod for reliable, high-force actuation in washdown or mildly corrosive manufacturing environments.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-20 the Right Cylinder?
Choose this 80 mm bore when an application requires higher force than a 63 mm cylinder (which provides 1559 N push at 0.5 MPa) but still needs a compact 75 mm nominal stroke. The 20 mm adjustment range is ideal for dialing in exact end stops during machine setup or product changeovers. For strokes of 300 mm or longer, external guides are recommended to manage side loads, though this 75 mm stroke is well within safe limits.
When specifying a replacement, verify the 80 mm bore, 75 mm stroke, 20 mm adjustment, PT port threads, and the absence of a magnet. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ80BX75-20 FAQ
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective stroke by up to 20 mm. This creates a usable travel window of 55-75 mm, providing flexibility to set precise end positions without adding external stops.
At 0.5 MPa operating pressure, the SAIJ80X75-20 provides 2513 N of push force and 2268 N of pull force. It can reach a maximum push force of 4523 N at 0.9 MPa.
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