Airtac SAIJ80 Adjustable Cylinder SAIJ80AX125-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX125-20S 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 SAIJ80AX125-20S
The AirTAC SAIJ80X125-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a usable travel window of 105-125 mm, allowing you to dial back the 125 mm nominal stroke by up to 20 mm during commissioning without adding external stops.
This variant features a SUS420J2 stainless steel rod for corrosion resistance and includes a magnet for CMSE reed or DMSE electronic sensors. The rear adjuster acts purely as a mechanical stop for end-position tuning; it does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX125-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX125-20S |
|---|---|
| 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 SAIJ80AX125-20S
| 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 SAIJ80AX125-20S Is Used
End-Position Tuning
Dial in the exact 105-125 mm travel window during machine setup to perfect the stopping point without swapping out the entire cylinder.
Product Changeover
Quickly adjust the rear stopper on the line when switching to a new product size, saving downtime on mechanical modifications.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX125-20S the Right Cylinder?
The adjustable 105-125 mm travel window is ideal for product changeovers where the exact end-position needs fine-tuning on the fly, unlike a fixed-stroke SAI cylinder.
This SAIJ80X125-20-S is configured with PT tapered ports, a SUS420J2 stainless steel rod, and an -S magnet for position sensing. It supports the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the 25 mm rod diameter handles side loads well, it remains robust, though any stroke over 300 mm would still require an external guide.
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 SAIJ80AX125-20S FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from 125 mm down to 105 mm. It only sets the travel end and does not lock the load without continuous air pressure.
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Covers non-human-caused product damage.
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