Airtac SAIJ80 Adjustable Cylinder SAIJ80AX275-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX275-75S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke275 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX275-75S
The AirTAC SAIJ80X275-75-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 200-275 mm usable travel window by allowing you to dial back the 275 mm nominal stroke by up to 75 mm. This bore size delivers 2513 N of pull force at 0.5 MPa, making it well-suited for heavier actuation tasks.
This specific configuration includes an SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance. The barrel features sensor grooves on both sides, and because it includes a magnet (-S), it works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state sensors. The standard variable air cushions at both ends decelerate the load, but the rear adjuster acts only as a travel stop, not a lock.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX275-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX275-75S |
|---|---|
| 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX275-75S
| 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 SAIJ80AX275-75S Is Used
Product Changeover
Dial in the exact end-stop for different product sizes on a packaging line without physically swapping cylinders.
Commissioning Fine-Tune
Trim the effective travel window during initial machine setup to perfect the seating position of heavy actuators.
Variable End Stops
Adjust the retract distance on the fly to accommodate varying package lengths moving through a conveyor system.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX275-75S the Right Cylinder?
Choose this 80 mm bore if your application requires a thrust class around 2513 N pull at 0.5 MPa, stepping up from a 63 mm bore that provides 1402 N. The 75 mm adjustable stroke is ideal for machine setups requiring exact end-position tuning during commissioning or product changeover, saving you from swapping out a fixed-stroke SAI cylinder or adding external stops. Because the stroke is 275 mm, the 25 mm rod and M20x1.5 thread provide rigidity, but for long unsupported loads, an external guide is recommended to prevent side-load wear.
When ordering, confirm the 80 mm bore, 275 mm stroke, 75 mm adjustment, PT tapered port (G3/8), and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. This cylinder is dimensionally interchangeable per ISO 15552. Remember that the adjuster and cushions do not hold the load without live air; for true load-holding without pressure, consider an SAIL, BSAI, or an external rod lock.
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 SAIJ80AX275-75S FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from 275 mm down to as little as 200 mm. This creates a 75 mm adjustable travel window for fine-tuning the end position without changing the cylinder itself.
At an operating pressure of 0.5 MPa, the SAIJ80X275-75-S provides 2513 N of pull force and 3518 N of push force. At the maximum pressure of 1.0 MPa, it can deliver up to 513 kgf.
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