Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX275-40S 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 SAIJ80BX275-40S
The AirTAC SAIJ80X275-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down to a 235-275 mm window.
This variant uses a SUS304 stainless steel rod for corrosion resistance and includes a magnet for CMSE reed or DMSE electronic sensors. The rear screw acts purely as a mechanical stop to dial in end positions during commissioning without adding external stops; it does not lock the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-40S |
|---|---|
| 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 SAIJ80BX275-40S
| 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 SAIJ80BX275-40S Is Used
Machine Changeover
Dial in the 235-275 mm travel window during product size changes without physically swapping cylinders or repositioning external hard stops.
End-Position Tuning
Fine-tune the retract end-position at commissioning to absorb mechanical tolerances and achieve exact placement of heavy 2513 N loads.
Assembly Line Indexing
Use the integrated DMSE electronic sensors and rear stopper to precisely set the stroke for automated assembly actuators.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-40S the Right Cylinder?
Choose this 80 mm bore when you need more thrust than a 63 mm cylinder (1559 N at 0.5 MPa) but want to avoid the larger footprint of a 100 mm bore. The 40 mm adjustment range is perfect for product changeovers on a line, letting you shift the end-stop without swapping the cylinder. For strokes of 275 mm or more, the 25 mm rod handles side loads well, but an external guide is still recommended for unsupported loads.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 275 mm stroke, 40 mm adjuster, PT port thread, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting. If your application requires the load to be held without live air, use a SAIL or BSAI lock cylinder instead, as this adjuster only sets the travel end.
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 SAIJ80BX275-40S FAQ
At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw lets you shorten the 275 mm nominal stroke by up to 40 mm, providing a usable travel window of 235-275 mm. It functions as a mechanical stop for end-position tuning and does not lock the load.
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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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