Airtac SAIJ80 Adjustable Cylinder SAIJ80AX125-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX125-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 125mm 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
- Stroke125 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 SAIJ80AX125-40S
The AirTAC SAIJ80X125-40-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. Because of the 40mm adjustment range, this 125mm nominal stroke unit provides a usable travel window of 85-125mm, allowing precise end-position tuning at commissioning without adding external stops.
This variant includes a SUS420J2 stainless steel rod for improved corrosion resistance and a magnet for position sensing. It utilizes PT tapered ports and offers a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) while omitting FB and rear pivot options. The rear adjuster acts purely as a travel stop to fine-tune deceleration, not as a load-holding lock.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX125-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX125-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 125 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 SAIJ80AX125-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SAIJ80AX125-40S Is Used
Machine Changeover
Dial in the 85-125mm travel window during product-size changeovers without physically swapping the cylinder or bolting on new external stops.
Sensor Integration
The integrated magnet pairs with DMSE solid-state sensors in the dual-side barrel grooves to confirm the adjusted end-position with high precision.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX125-40S the Right Cylinder?
Choose this 80mm bore adjustable cylinder when your application requires fine-tuning the retract end-position on the fly, such as during product-size changeovers on a line. If you need less force, stepping down to a 63mm bore yields 1559N at 0.5 MPa; if higher force is required, moving up to a 100mm bore provides 3927N.
For an exact ISO 15552 replacement match, verify the 125mm stroke, 40mm adjustment code, PT port thread, and the -S magnet option. The included magnet works seamlessly with AirTAC CMSE reed and DMSE electronic sensors. Remember that the rear adjuster only sets the travel end; it cannot hold a load without live air, so for fail-safe load holding, consider the SAIL or BSAI series 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 SAIJ80AX125-40S FAQ
The rear adjuster screw allows you to shorten the 125mm nominal stroke by up to 40mm. This creates an adjustable usable travel window of 85-125mm, enabling fine-tuning of the end-position at commissioning without replacing the cylinder.
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