Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-75S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX125-75S 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 SAIJ80BX125-75S
The AirTAC SAIJ80X125-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 50-125 mm. It delivers a robust 2268 N pull force at 0.5 MPa, making it well-suited for heavy positioning tasks. The barrel is extruded aluminum, not a tie-rod design, ensuring a rigid yet lightweight structure.
This specific SKU is configured with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing. The rear adjuster acts purely as a travel stop to fine-tune the end position during commissioning; it is not a lock and will not hold the load without live air pressure. For load-holding without pressure, consider the SAIL or BSAI series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-75S |
|---|---|
| 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 SAIJ80BX125-75S
| 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 SAIJ80BX125-75S Is Used
Variable End-Stop Positioning
Dial in the exact retract distance between 50 and 125 mm during machine setup to accommodate different material thicknesses without external stopper blocks.
Product Changeover
Quickly readjust the stroke window on packaging lines when switching to a new product size, reducing downtime and eliminating the need to bolt on custom spacers.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-75S the Right Cylinder?
Choose this adjustable-stroke cylinder when your fixture requires variable end-stops or frequent product changeovers without physically swapping the barrel. If you need less force, stepping down to the 50 mm bore yields 825 N of pull at 0.5 MPa; if your application demands higher thrust, the 100 mm bore provides 3681 N. This model uses a PT tapered G3/8 port and supports mounting accessories Basic, FA, LB, TC, FTC, TCM1, and TCM2. To replace an ISO 15552 cylinder, match the 80 mm bore, 125 mm stroke, 75 mm adjuster, PT G3/8 port, and -S magnet.
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 SAIJ80BX125-75S FAQ
The rear adjusting screw lets you mechanically shorten the nominal 125 mm stroke by up to 75 mm, providing an effective travel window of 50-125 mm. This allows you to fine-tune the retract end-position at commissioning without changing the cylinder.
At 0.7 MPa, the push force increases to 3518 N.
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Covers non-human-caused product damage.
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