Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-20S 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 SAIJ80X135-20S
The AirTAC SAIJ80X135-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a robust 2513N push force at 0.5MPa and features a 25mm carbon steel rod with an M20x1.5 thread. The integrated -S magnet enables position detection using AirTAC CMSE reed or DMSE electronic sensors along the dual-side barrel grooves.
With a 135mm nominal stroke and a 20mm adjustment range, this SKU yields a usable travel window of 115-135mm. This built-in rear stopper allows you to fine-tune the retract end position during commissioning without adding external stops. The PT tapered porting is G3/8, and the extruded aluminum body supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-20S |
|---|---|
| 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 SAIJ80X135-20S
| 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 SAIJ80X135-20S Is Used
Product Changeovers
Dial in the 115-135mm retract position during format size changes on packaging lines without swapping hardware.
End-Stop Tuning
Fine-tune the final end position during machine commissioning using the rear adjuster instead of external stops.
Assembly Pressing
Delivers 2513N of thrust at 0.5MPa for pressing operations requiring precise depth control.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X135-20S the Right Cylinder?
Choose this 80mm bore when an application requires roughly 2513N of push force at 0.5MPa, or step down to a 63mm bore (1559N push) for lighter loads. The adjustable stroke is ideal for product changeovers on a line, letting you dial in the exact 115-135mm end-stop on the fly. Because the rear adjuster acts only as a travel stop and the air cushion handles deceleration, neither will hold a load without live air pressure; for true load-holding, select an AirTAC SAIL or BSAI cylinder. To match this ISO 15552 interchangeable cylinder, confirm the 135mm stroke, 20mm adjust, G3/8 PT ports, and -S magnet.
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 SAIJ80X135-20S FAQ
The rear adjuster acts as a mechanical stop that lets you trim the effective travel back by up to 20mm, creating a usable stroke window of 115-135mm. It sets the end position but does not lock the load without live air.
At 0.5MPa operating pressure, it provides 2513N of push force and 2268N of pull force. At 0.7MPa, the push force increases to 3518N.
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