Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-50S 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 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 SAIJ80X275-50S
The AirTAC SAIJ80X275-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 275 mm stroke that can be dialed back by up to 50 mm, yielding a precise 225-275 mm usable travel window for product changeovers. Delivering 3518 N of push force at 0.7 MPa, it handles robust industrial motion. The integrated magnet (-S) supports position sensing via CMSE reed or DMSE electronic switches.
This extruded aluminum profile cylinder omits tie-rod construction and features a 25 mm carbon steel rod with an M20x1.5 thread. The rear adjuster acts purely as a mechanical stop to set the end position and does not hold the load without live air pressure. For load-holding requirements, external pilot-operated check valves or an AirTAC BSAI clamp-lock cylinder are required.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-50S |
|---|---|
| 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 | 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 SAIJ80X275-50S
| 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 SAIJ80X275-50S Is Used
Machine Changeover
Dial in the exact end-stop from 275 mm down to 225 mm when switching product sizes on a packaging line, eliminating the need to swap actuators.
Assembly Pressing
Provides 3518 N of thrust at 0.7 MPa for pressing bearings or pins, with fine rear-screw tuning to set the precise depth without adding external stops.
Diversion Gates
Adjusts the stroke window on the fly to position sorting flaps accurately along a conveyor belt as lane widths change.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-50S the Right Cylinder?
Select this 80 mm bore actuator when your application requires 3518 N of thrust at 0.7 MPa, but you need the flexibility to trim the travel down to 225 mm during commissioning. If your force requirements are lower, stepping down to a 63 mm bore yields 2182 N at 0.5 MPa; if higher, a 100 mm bore provides 5497 N at 0.7 MPa. Because the 275 mm stroke exceeds 250 mm, an external guide is recommended to prevent excessive side-loading on the 25 mm rod.
This SAIJ model is dimensionally interchangeable per ISO 15552 and uses a PT tapered G3/8 port. It supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2. To replace an existing ISO 15552 cylinder, match the 80 mm bore, 275 mm stroke, 50 mm adjustment, G3/8 port, and -S magnet specification.
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 SAIJ80X275-50S FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from 275 mm down to 225 mm. It sets the end position but does not lock the load without live air pressure.
At 0.7 MPa operating pressure, it provides 3518 N of push force and 2268 N of pull force. It can reach a maximum of 513 kgf at 1.0 MPa.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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