Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-20S 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 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 SAIJ80AX75-20S
The AirTAC SAIJ80X75-20-S 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 heavy positioning tasks. The integrated -S magnet supports position feedback via CMSE reed or DMSE electronic sensors.
This variant uses a SUS420J2 stainless steel rod for corrosion resistance and PT tapered port threads. The rear adjuster acts purely as a mechanical stop for fine-tuning end positions during commissioning; it does not lock the load. For load-holding without live air pressure, consider the SAIL or BSAI series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-20S |
|---|---|
| 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 | 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 SAIJ80AX75-20S
| 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 SAIJ80AX75-20S Is Used
Product Changeover
Dial in the 55-75 mm travel window during line changeovers to accommodate different package sizes without replacing the cylinder.
Heavy Clamping
Leverage the 2513 N push force at 0.5 MPa to secure heavy workpieces, using the rear stop to fine-tune the clamp position.
Machine Setup
Eliminate mechanical shimming at commissioning by using the rear adjuster to set exact end-of-stroke positions instantly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-20S the Right Cylinder?
Choose this 80 mm bore when your application requires substantial thrust, such as 2513 N push or 2268 N pull at 0.5 MPa. If you need less force, stepping down to a 63 mm bore yields 1559 N push, whereas a 100 mm bore offers 3927 N. The 20 mm stroke adjuster is ideal for product changeovers, allowing you to shorten the 75 mm travel down to 55 mm without swapping hardware.
This model includes a magnet for CMSE and DMSE switches. It uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR mounts. Because the 25 mm rod handles side loads well, it remains robust, though external guides are always recommended for precise lateral stability.
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 SAIJ80AX75-20S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw allows you to mechanically shorten the 75 mm nominal stroke by up to 20 mm, creating a 55-75 mm usable travel window. This stopper only sets the end position and does not hold the load without air pressure.
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