Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 135mm 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
- Stroke135 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-30
The AirTAC SAIJ80X135-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 105-135 mm, allowing you to dial back the nominal 135 mm stroke by up to 30 mm during commissioning. Delivering a robust 3518 N push force at 0.7 MPa, it is built to handle demanding actuation tasks.
This model uses a standard carbon steel piston rod with an M20x1.5 thread, offering high structural rigidity and excellent resistance to side loads. It features PT tapered port threads (G3/8) and dual-sided sensor grooves. The rear adjuster acts purely as a mechanical stop to set the end position and is not a locking device, meaning the cylinder cannot hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 135 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 SAIJ80X135-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×135 | 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 SAIJ80X135-30 Is Used
Variable End-Stop Tuning
Dial in the exact 105-135 mm retraction point during machine commissioning to accommodate varying material thicknesses without hardware changes.
Product Changeover
Quickly adjust the stroke stop by up to 30 mm when switching the line to a different package size, minimizing downtime between production runs.
High-Force Positioning
Leverage the 2513 N push force at 0.5 MPa to move heavy fixtures into a precise working zone, relying on the rear stop for exact placement.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-30 the Right Cylinder?
Choose this 80 mm bore when your application requires more force than the 50 mm class (1374 N push at 0.7 MPa) but does not need the full output of the 100 mm option (5497 N). The 30 mm adjustment range is ideal for product changeovers on a packaging line, letting operators fine-tune the end stop without swapping cylinders or adding external stops. If your process requires true load-holding without continuous air pressure, consider the SAIL or BSAI series instead, as the SAIJ adjuster only restricts travel.
For a direct ISO 15552 replacement, match the 80 mm bore, 135 mm stroke, 30 mm adjustment, G3/8 PT ports, and standard carbon steel rod. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since this is a 135 mm stroke, ensure external guides are used if the load imposes significant lateral moments on the M20 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 SAIJ80X135-30 FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 30 mm, creating a usable travel window of 105-135 mm. It acts as a mechanical stop to fine-tune the end position and does not lock the load.
At a 0.7 MPa operating pressure, the SAIJ80X135-30 provides 3518 N of push force and 2268 N of pull force. It operates at speeds between 30 and 800 mm/s.
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