Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-30S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX275-30S 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 SAIJ80BX275-30S
The AirTAC SAIJ80X275-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 275 mm nominal stroke by up to 30 mm. This creates a precise 245-275 mm usable travel window, perfect for fine-tuning end positions during commissioning without swapping out the unit. It delivers robust thrust, pushing 4523 N at 0.9 MPa, and features a SUS304 stainless steel rod for superior corrosion resistance.
This model includes a built-in magnet (-S) for position sensing with AirTAC CMSE reed or DMSE electronic switches mounted in the dual-side sensor grooves. Fluid ports are PT tapered thread (G3/8), and the extruded aluminum barrel houses adjustable air cushions at both ends to decelerate the payload smoothly.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-30S |
|---|---|
| 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 SAIJ80BX275-30S
| 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 SAIJ80BX275-30S Is Used
Machine Changeover
Dial in the 245-275 mm travel window during product size transitions without physically replacing the cylinder or adding external mechanical stops.
End-Position Tuning
Use the 30 mm rear adjuster to fine-tune the retract stroke precisely during commissioning, absorbing mechanical tolerances in the fixture.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX275-30S the Right Cylinder?
Choose this 80 mm bore when your application requires substantial force—stepping down to a 63 mm bore drops the 0.5 MPa push thrust to 1559 N, while this size provides 2513 N at the same pressure. The adjustable stroke is ideal for product changeovers on a line, letting you shift the end-stop by up to 30 mm on the fly. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air pressure. For fail-safe load holding, consider an external rod lock or the AirTAC SAIL series.
With a 275 mm stroke, this cylinder requires an external guide to prevent excessive side-loading on the SUS304 rod and M20x1.5 thread. It is dimensionally interchangeable per ISO 15552 and uses a specific mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ80BX275-30S FAQ
It can deliver a maximum push of 513 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 275 mm nominal stroke by up to 30 mm, providing an effective travel window of 245 to 275 mm. It only sets the end position and does not lock the load without air pressure.
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Genuine AirTAC parts produced by AirTAC factory.
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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