Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-40S 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 SAIJ80AX75-40S
The AirTAC SAIJ80X75-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 2513N of push force at 0.5 MPa and features a 75mm nominal stroke that can be dialed back by up to 40mm, creating a precise 35-75mm usable travel window for product changeovers.
This variant includes an SUS420J2 stainless steel rod (code A) for corrosion resistance and a built-in magnet (-S) for position sensing with CMSE reed or DMSE electronic switches. It uses PT tapered ports and retains the standard extruded aluminum barrel with sensor grooves on both sides.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-40S |
|---|---|
| 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 SAIJ80AX75-40S
| 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 SAIJ80AX75-40S Is Used
Variable End-Stop Positioning
Dial in the exact retraction point between 35 and 75mm during machine setup to accommodate different material thicknesses without external stops.
Product Size Changeover
Quickly adjust the rear stroke screw on packaging lines when switching between product sizes, saving commissioning time.
Assembly Press Toning
Fine-tune the pressing depth on assembly lines, relying on the 25mm rod and M20x1.5 thread to handle side loads during the operation.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX75-40S the Right Cylinder?
Choose this 80mm bore when an application requires around 2513N of push force at 0.5 MPa, stepping up from a 63mm bore that provides 1559N. The 40mm adjustment range is ideal for machines needing variable end-stops without swapping cylinders, though the rear screw acts only as a travel stop and does not hold the load without live air.
For exact ISO 15552 dimensional interchangeability, match the 80mm bore, 75mm stroke, PT port thread, and -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets.
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 SAIJ80AX75-40S FAQ
At 0.5 MPa, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The rear adjuster screw allows you to shorten the 75mm nominal stroke by up to 40mm, providing an effective travel window of 35 to 75mm. The adjuster functions as a mechanical stop and does not lock the load without air pressure.
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