Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-75 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 SAIJ80X275-75
The AirTAC SAIJ80X275-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits you to dial back the nominal 275 mm travel by up to 75 mm. This yields a usable end-position window of 200 to 275 mm, enabling precise calibration during commissioning without swapping hardware. Delivering 2513 N of push force at 0.5 MPa, it is built for robust actuation tasks.
This 80 mm bore unit incorporates a 25 mm carbon steel rod and M20x1.5 rod thread, offering high resistance to side loads, though a 275 mm stroke still warrants an external guide for unsupported loads. It uses a PT tapered port (G3/8) and includes variable air cushions at both ends to decelerate the moving mass smoothly.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-75 |
|---|---|
| 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 SAIJ80X275-75
| 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 SAIJ80X275-75 Is Used
Machine Changeover
Rapidly reconfigure the effective stroke from 200 to 275 mm when switching between product sizes on a packaging line, eliminating the need to swap out the entire cylinder.
End-Position Tuning
Fine-tune the retract stroke during initial commissioning to dial in exact stopping distances without adding external mechanical stops or shims to the fixture.
Heavy Payload Handling
Move substantial fixtures using up to 3518 N of thrust at 0.7 MPa, relying on the 25 mm rod and M20x1.5 thread to withstand demanding industrial side loads.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-75 the Right Cylinder?
Select this 80 mm bore when your application requires a mid-range thrust of 2513 N (at 0.5 MPa) or 3518 N (at 0.7 MPa). If your push force requirements are lower, stepping down to a 63 mm bore yields 1559 N, whereas moving up to a 100 mm bore provides 3927 N. The 75 mm adjustment range is ideal for product-size changeovers on a line, allowing you to reposition the end stop quickly rather than installing fixed spacers.
For an ISO 15552 replacement match, verify the 80 mm bore, 275 mm stroke, 75 mm adjustment, PT port thread, and your required mounting accessory (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Remember that the rear adjuster functions strictly as a travel stop and does not hold the load without live air; for fail-safe load holding, consider the SAIL or BSAI series.
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 SAIJ80X275-75 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the nominal 275 mm down to 200 mm. This creates a 200-275 mm adjustable window for fine-tuning the retract end position without replacing the cylinder.
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