Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 155mm 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
- Stroke155 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-30
The AirTAC SAIJ80X155-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 155 mm nominal travel by up to 30 mm. This yields a precise 125-155 mm usable stroke window, ideal for fine-tuning end positions during commissioning without swapping out the entire unit. It delivers a robust 2513 N push force at 0.5 MPa, making it suitable for heavy-duty positioning tasks.
This model features a carbon steel piston rod with an M20x1.5 male thread, providing a durable mounting interface for high side-load resilience. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement, while the PT tapered port threads ensure a secure, leak-free pneumatic connection. Air cushions at both ends manage deceleration, though the rear stopper and cushions do not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 155 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 SAIJ80X155-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×155 | 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 SAIJ80X155-30 Is Used
Machine Changeover
Quickly reconfigure the 125-155 mm travel window during product size changeovers on a packaging line without replacing hardware.
End-Position Tuning
Fine-tune the exact retraction point during initial commissioning to perfect the seating pressure of heavy 2513 N assemblies.
Variable End Stops
Establish adaptable physical stops for automated material handling equipment that processes multiple part lengths.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-30 the Right Cylinder?
Select this 80 mm bore cylinder when an application requires substantial thrust—delivering 2513 N push and 2268 N pull at 0.5 MPa—alongside variable end-stop positioning. If your setup demands less force, stepping down to a 63 mm bore yields 1559 N, whereas upgrading to a 100 mm bore provides 3927 N. The adjustable-stroke design is chosen over a fixed SAI cylinder when machine formats change frequently, allowing operators to reposition the travel limit on the fly instead of adding external mechanical stops.
When matching this ISO 15552 interchangeable cylinder for a retrofit, verify the 155 mm stroke, 30 mm adjustment range, G3/8 port size, and PT thread type. Because it lacks a magnet, it does not support CMSE or DMSE sensors without modification. Remember that the rear adjuster is a travel stop, not a locking device; for load-holding without live air, consider an AirTAC SAIL or BSAI cylinder. Since the stroke is under 300 mm, standard mounting options like Basic, FA, LB, TC, FTC, TCM1, and TCM2 provide sufficient support without needing external guides.
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 SAIJ80X155-30 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 force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the 155 mm nominal stroke down to as little as 125 mm. This creates a 125-155 mm usable window for precise end-position tuning without altering the cylinder mount.
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