Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 140mm 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
- Stroke140 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-30
The AirTAC SAIJ80X140-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 140 mm stroke that can be fine-tuned backward by up to 30 mm, yielding a usable travel window of 110-140 mm. Delivering 2513 N of push force at 0.5 MPa, it handles substantial loads while maintaining an extruded aluminum barrel with sensor grooves on both sides.
Equipped with a 25 mm carbon steel rod and an M20x1.5 thread, this unit manages higher side loads than smaller bores. The rear adjuster acts purely as a mechanical stop to set the retract end position during commissioning; it does not hold the load without live air pressure. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 140 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 SAIJ80X140-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×140 | 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 SAIJ80X140-30 Is Used
Machine Changeover
Dial in the 110-140 mm travel window during product size changes without replacing the cylinder or bolting on external stops.
End-Position Tuning
Fine-tune the retract end position at commissioning using the rear adjuster to perfectly align tooling or fixtures.
Assembly Stations
Provide variable end stops for pressing or clamping tasks where the exact travel distance requires field adjustment.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-30 the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (982 N push at 0.5 MPa) is insufficient, but before stepping up to a 100 mm bore (3927 N push at 0.5 MPa). The 30 mm adjustment range is ideal for product changeovers, allowing you to dial in the exact end-stop without swapping hardware or adding external stops. For fixed travel, a standard SAI cylinder is simpler.
Configuration: 80 mm bore, 140 mm stroke, 30 mm adjustment, PT tapered ports, no magnet. Since the stroke is under 300 mm, side-load stress is moderate, but long unsupported rods still need an external guide. The rear screw and air cushions decelerate travel but will not lock the load; for true load-holding without live pressure, use an SAIL or BSAI cylinder.
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 SAIJ80X140-30 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. It can reach up to 4523 N push at 0.9 MPa.
The rear adjuster screw lets you shorten the 140 mm nominal stroke by up to 30 mm, creating a 110-140 mm usable travel window. This mechanical stop sets the end position but does not lock the load without live air.
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