Airtac SAIJ80 Adjustable Cylinder SAIJ80BX145-75
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX145-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 145mm 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
- Stroke145 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 SAIJ80BX145-75
The AirTAC SAIJ80X145-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 75 mm. This creates a highly flexible usable travel window of 70 to 145 mm, letting you dial in the exact retract position during commissioning without swapping hardware.
Built with a SUS304 stainless steel rod for superior corrosion resistance, this model uses a PT tapered port thread and includes variable air cushions at both ends to manage kinetic energy. The extruded aluminum barrel features sensor grooves on both sides for direct mounting of position switches. It supports a speed range of 30-800 mm/s and accepts the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting the FB, CA, CB, and CR options.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX145-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX145-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 145 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 SAIJ80BX145-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×145 | 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 SAIJ80BX145-75 Is Used
Variable End-Stop Tuning
Dial in the exact retract position from 70 to 145 mm during machine commissioning to accommodate new product dimensions without changing the cylinder.
Corrosive Environment Automation
Utilize the SUS304 stainless steel rod in washdown or corrosive manufacturing areas while relying on the adjustable stroke for flexible machine setup.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX145-75 the Right Cylinder?
Choose this 80 mm bore when you need significantly more thrust than a 63 mm cylinder (which provides 1559 N at 0.5 MPa) but want to avoid the larger footprint of a 100 mm unit. The 75 mm adjustment range is ideal for machinery that frequently handles varying product sizes, allowing operators to fine-tune the end-stop on the fly instead of adding external stops or changing a fixed-stroke SAI cylinder.
When specifying an ISO 15552 replacement, match the 80 mm bore, 145 mm stroke, PT port, and SUS304 rod material. Note that the rear adjuster acts purely as a travel stop to set the deceleration point; it does not hold the load without live air pressure. For true fail-safe load holding, consider the SAIL or BSAI series instead. Because the stroke is under 300 mm, side-load risks are minimal, though long unsupported loads should still use 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 SAIJ80BX145-75 FAQ
At 0.9 MPa, the push force increases to 4523 N.
The rear adjuster screw lets you mechanically shorten the 145 mm nominal stroke by up to 75 mm, providing a usable travel window of 70 to 145 mm to fine-tune the retract end position.
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