Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 300mm 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
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-30
The AirTAC SAIJ80X300-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 270 to 300 mm, allowing you to dial back the nominal stroke by up to 30 mm during commissioning without adding external stops. Operating at 0.5 MPa, it delivers 2513 N of push force and 2268 N of pull force.
This 80 mm bore unit uses a G3/8 port and a 25 mm carbon steel rod with an M20x1.5 thread, providing robust side-load resistance. It features a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and dual-sided sensor grooves. Note that the rear adjuster acts only as a travel stop; it does not lock the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 300 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 SAIJ80X300-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SAIJ80X300-30 Is Used
Product Changeover
Dial in the exact 270 to 300 mm end-stop needed when switching a packaging line to a different carton size without swapping the cylinder.
Machine Setup
Fine-tune the retract position during commissioning to align a 2513 N press tool precisely, avoiding the need for external stopper blocks.
Variable End Stops
Adjust the travel window on automated assembly equipment to accommodate varying part widths on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X300-30 the Right Cylinder?
Choose this 80 mm bore model when your application requires higher thrust than the 63 mm bore (which provides 1559 N push at 0.5 MPa) but does not need the full 3927 N output of a 100 mm cylinder. The adjustable 270-300 mm window is ideal for product changeovers or fine-tuning end positions, whereas a fixed SAI cylinder locks you into a single 300 mm travel. If you need to hold a load without continuous air pressure, the rear adjuster will not suffice; consider an AirTAC SAIL or BSAI locking cylinder instead.
Because the 300 mm stroke is relatively long, an external guide is recommended to prevent excessive rod deflection and premature seal wear. To replace this unit with another ISO 15552 cylinder, match the 80 mm bore, 300 mm stroke, 30 mm adjustment, PT G3/8 port, and standard carbon steel rod.
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 SAIJ80X300-30 FAQ
The rear adjuster screw lets you shorten the effective travel by up to 30 mm, creating a 270-300 mm usable window. It acts as a mechanical stop to fine-tune the end position and does not lock the load without live air.
At 0.5 MPa, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At the maximum operating pressure of 1.0 MPa, the push force reaches 4523 N.
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