Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-40
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX275-40 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 SAIJ80BX275-40
The AirTAC SAIJ80X275-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, letting you fine-tune the retract end position during commissioning. With a nominal 275 mm stroke and a 40 mm adjustment range, it provides a usable travel window of 235-275 mm, allowing precise variable end-stops without swapping the barrel or adding external stops.
This configuration omits the FB, CA, CB, and CR mountings, offering a tailored subset of ISO 15552 interfaces: Basic, FA, LB, TC, FTC, TCM1, and TCM2. The extruded aluminum barrel features dual sensor grooves, though this specific SKU lacks the internal magnet for CMSE or DMSE electronic switches. Remember that the rear adjuster acts strictly as a travel stop and works with the variable air cushions to decelerate the load; it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-40 |
|---|---|
| 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 SAIJ80BX275-40
| 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 SAIJ80BX275-40 Is Used
Product Changeover
Dial in the retract position by up to 40 mm during packaging line format changes, accommodating varying product lengths without physically swapping cylinders.
Machine Setup
Fine-tune the 235-275 mm travel window during commissioning to perfect end-of-stroke positioning, eliminating the need to bolt on external mechanical stops.
Variable End Stops
Establish precise, repeatable retract limits on automated assembly stations, using the rear adjuster to adapt the stroke to different tooling heights.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-40 the Right Cylinder?
The 40 mm adjustable stroke is ideal for machine setups requiring frequent product-size changeovers, giving you a 235-275 mm window to dial in the exact retract position. Because the stroke is 275 mm, ensure adequate external guiding to prevent excessive side loads on the rod, despite the sturdy 25 mm SUS304 rod.
If you need true load-holding without continuous live air, a plain SAIJ will not suffice since the rear adjuster is only a stop, not a lock. For those scenarios, consider the SAIL (air-released lock) or BSAI (clamp-lock) variants. To replace this cylinder per ISO 15552 interchangeability, match the 80 mm bore, 275 mm stroke, 40 mm adjustment, PT G3/8 port, and the specified mounting subset.
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 SAIJ80BX275-40 FAQ
If you increase the operating pressure to 0.7 MPa, the push force rises to 3518 N.
The rear adjuster acts as a mechanical stop that lets you trim the effective travel back from the 275 mm nominal stroke, creating a usable 235-275 mm window. It works with the air cushions to decelerate the load but does not lock or hold the position without live air pressure.
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