Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 115mm 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
- Stroke115 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-30
The AirTAC SAIJ80X115-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 85 to 115 mm, allowing you to dial back the nominal 115 mm stroke by up to 30 mm. Operating at 0.5 MPa, it delivers 2513 N of push force and 2268 N of pull force, making it well-suited for medium-to-heavy actuation tasks.
This adjustable model uses a PT tapered port thread and omits the FB, CA, CB, and CR mounts found on some standard cylinders, supporting Basic, FA, LB, TC, FTC, TCM1, and TCM2 configurations. The 25 mm carbon steel rod and M20x1.5 thread provide robust resistance to side loading, while the external adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 115 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 SAIJ80X115-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×115 | 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 SAIJ80X115-30 Is Used
Machine Setup and Changeover
Fine-tune the retract end-position by up to 30 mm during commissioning or product size changes without physically replacing the cylinder or bolting on external stops.
Variable End-Stop Actuation
Dial in the exact 85 to 115 mm travel window required for positioning jigs or varying material thicknesses on automated processing lines.
Medium-Heavy Force Positioning
Leverage the 2513 N push force at 0.5 MPa to shift heavier pallets or tooling, relying on the 25 mm rod to handle the operational side loads.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-30 the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (offering 825 N pull at 0.5 MPa) lacks the thrust for your application, but a 100 mm bore (3681 N pull) would be excessive. The 30 mm rear adjuster is ideal for machine setup and product changeover, letting you fine-tune the end-of-stroke position without swapping cylinders or adding external stops. Because the stroke is 115 mm, side-load risks are minimal, but an external guide is always recommended for optimal rod bearing life. If your process requires the load to be held in place without continuous air pressure, this cylinder's stopper will not suffice; consider an AirTAC SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead. For a direct ISO 15552 replacement, match the 80 mm bore, 115 mm stroke, 30 mm adjustment, PT port, and your required mounting set.
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 SAIJ80X115-30 FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 30 mm, creating a usable travel window of 85 to 115 mm. It functions as a hard stop to set the exact end position and does not lock the load without live air pressure.
At 0.5 MPa, it provides 2513 N of push force and 2268 N of pull force. The standard speed range for this bore size is 30-800 mm/s, supported by variable air cushions at both ends.
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