Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-50S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX275-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 275mm 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
- Stroke275 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 SAIJ80BX275-50S
The AirTAC SAIJ80X275-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 225 to 275 mm. An integrated magnet enables position detection with AirTAC CMSE reed or DMSE electronic sensors.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. The rear stopper allows precise end-position tuning during commissioning without adding external stops, though it acts only as a travel limit and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 275 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 SAIJ80BX275-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×275 | 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 SAIJ80BX275-50S Is Used
Product Changeover
Dial in the exact 225 to 275 mm end-position during production line format changes without swapping hardware.
Machine Setup
Fine-tune the rear stopper during initial commissioning to perfectly align heavy pushing forces up to 2513 N.
Variable End Stops
Adjust the travel limit mechanically on the fly for multi-format packaging equipment requiring precise stopping.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-50S the Right Cylinder?
The 50 mm adjustment range is ideal for machinery requiring frequent product-size changeovers, allowing operators to dial in the exact end-stop mechanically rather than swapping out a fixed-stroke SAI cylinder. For load-holding without continuous air pressure, a SAIL pneumatic lock or external rod lock is required, as the SAIJ adjuster is strictly a travel stop.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 275 mm stroke, 50 mm adjustment, PT port threads, and the -S magnet requirement. The SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the stroke exceeds 300 mm is not applicable here, but always ensure external guiding for long unsupported loads to prevent side-load wear on the M20x1.5 rod thread.
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 SAIJ80BX275-50S FAQ
At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective travel from the 275 mm nominal stroke down to 225 mm. It sets the end position but does not lock the load without live air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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