Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-50S 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 SAIJ80X140-50S
The AirTAC SAIJ80X140-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 90-140 mm. It delivers a robust 4523 N push force at 0.9 MPa, making it well-suited for heavier positioning tasks. The integrated magnet supports AirTAC CMSE reed and DMSE solid-state sensors housed in the dual-side barrel grooves.
The 50 mm adjustment mechanism acts as a retract-end stopper for fine-tuning end positions during commissioning without adding external stops. It is not a locking device and cannot hold a load without live air; for true fail-safe holding, consider the SAIL or BSAI series. The 25 mm carbon steel rod and M20x1.5 thread offer high rigidity, while the PT tapered ports ensure a tight pneumatic seal.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-50S |
|---|---|
| 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 SAIJ80X140-50S
| 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 SAIJ80X140-50S Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 90-140 mm window during machine setup without swapping out the entire cylinder.
Product Size Changeover
Adapt automated lines quickly to different package lengths by adjusting the 50 mm stopper on the fly.
Heavy-Duty Positioning
Leverage the 4523 N push force to move heavier jigs or fixtures into their precise working coordinates.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X140-50S the Right Cylinder?
Select this 80 mm bore when a 50 mm bore (providing 1767 N push at 0.9 MPa) lacks the power for your tooling, but a 100 mm bore (7068 N) is physically oversized. The 90-140 mm adjustable travel window is ideal for product changeovers where the exact end-of-stroke position varies. Mounting options include the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). To match this ISO 15552 replacement, verify the 140 mm stroke, 50 mm adjuster, PT G3/8 port, and the -S magnet requirement. Although the 140 mm stroke is short, always ensure proper guide support to prevent rod side-loading damage.
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 SAIJ80X140-50S FAQ
At an operating pressure of 0.9 MPa, this 80 mm bore cylinder generates a push force of 4523 N and a pull force of 2268 N.
The rear adjuster acts as a mechanical stopper, allowing you to shorten the effective stroke from 140 mm down to 90 mm. It only sets the travel end and does not lock the load without live air.
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