Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-50
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX140-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 140mm 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
- Stroke140 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 SAIJ80BX140-50
The AirTAC SAIJ80X140-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window down to a 90-140 mm range. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches.
This SKU is configured with a SUS304 stainless steel rod for superior corrosion resistance and a PT tapered port thread. The rear adjuster acts purely as a mechanical stop to dial in the exact end position during commissioning without adding external stops. It is not a locking mechanism, so load-holding without live air requires a SAIL or BSAI cylinder.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 140 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 SAIJ80BX140-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×140 | 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 SAIJ80BX140-50 Is Used
Machine Changeover
Dial in the 90-140 mm travel window during product size changes to set new end positions without physically swapping cylinders.
Variable End Stops
Use the rear screw to precisely tune the retract position for multi-variant tooling setups on a single fixture.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-50 the Right Cylinder?
Choose this 80 mm bore when a 50 mm stroke (yielding 825 N pull at 0.5 MPa) lacks the reach, but you need to trim the endpoint on the fly. The adjustable end-stop is ideal for product changeovers. For true fail-safe load holding, select a SAIL or BSAI cylinder instead. This 140 mm stroke is under the 300 mm side-load threshold, but the 25 mm rod and M20x1.5 thread still handle moderate lateral stress well.
To replace an ISO 15552 cylinder, match the 80 mm bore, 140 mm nominal stroke, 50 mm adjustment, PT G3/8 port, and Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting interface. Note that SAIJ omits the FB, CA, CB, and CR mounts.
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 SAIJ80BX140-50 FAQ
The rear adjuster screw lets you mechanically shorten the effective travel from 140 mm down to 90 mm. It acts as a hard stop to fine-tune the retract end position during setup, but it does not lock the load without continuous air pressure.
At the maximum 1.0 MPa pressure, the push force increases to 4523 N.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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