Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 125mm 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
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30
The AirTAC SAIJ80X125-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 125 mm travel to a precise 95-125 mm window. Delivering 2513 N of push force at 0.5 MPa, this extruded aluminum body integrates sensor grooves on both sides for straightforward position feedback. It features a robust 25 mm carbon steel piston rod and a PT tapered port thread.
The integrated rear stopper screw enables fine end-position tuning during commissioning without the need to swap out the entire cylinder or bolt on external stops. This adjustable-stroke variant utilizes a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR options. The rear adjuster functions strictly as a travel stop and does not lock the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 125 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 SAIJ80X125-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SAIJ80X125-30 Is Used
Machine Changeover
Quickly fine-tune the 95-125 mm travel window during product size transitions without physically replacing the cylinder or adding shims.
End-Stop Calibration
Dial in the exact retract position during commissioning to prevent mechanical crashes, utilizing the rear stopper for precise positioning.
Variable Stroke Clamping
Accommodate varying workpiece heights on an assembly line by adjusting the effective stroke back by up to 30 mm as needed.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30 the Right Cylinder?
Choose this 80 mm bore when an application demands high thrust, such as the 2268 N pull force at 0.5 MPa, but requires less travel than a 63 mm bore cylinder might provide. If you need to step down force, a 63 mm bore offers 1402 N pull at 0.5 MPa. The adjustable 95-125 mm window is ideal for product-size changeovers on a line, whereas a fixed SAI cylinder is better suited for rigid, unchanging end positions. To match this ISO 15552 footprint exactly, specify the 80 mm bore, 125 mm stroke, 30 mm adjustment, G3/8 PT ports, and your required mounting style.
Because the stroke is under 300 mm, side-load risks are minimized, though the 25 mm rod thread handles standard loads well. Remember that the rear adjuster only sets the travel end; for load-holding without live air pressure, you must employ an external rod lock or pilot-operated check valve, or select an AirTAC SAIL or BSAI model.
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 SAIJ80X125-30 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 0.9 MPa, the push force increases to 4523 N.
The rear adjuster acts as a mechanical stop, allowing you to shorten the effective stroke from the nominal 125 mm down to 95 mm. It only sets the travel end and does not hold the load without continuous air pressure.
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