Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 260mm 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
- Stroke260 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-20
The AirTAC SAIJ80X260-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the nominal 260 mm travel back by up to 20 mm, yielding a precise 240-260 mm usable window. It delivers a robust 2513 N push force at 0.5 MPa and utilizes a G3/8 port paired with a 25 mm carbon steel rod for high side-load resilience.
This adjustable variant omits the FB, CA, CB, and CR mounts, retaining the core SAIJ mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2. The rear stopper screw acts strictly as a travel end-deceleration device and does not hold the load without live air pressure; for true load-holding, consider SAIL or BSAI types.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 260 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 SAIJ80X260-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×260 | 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 SAIJ80X260-20 Is Used
Machine Setup Tuning
Dial in the exact 240-260 mm end-position during initial commissioning without machining new external stopper blocks.
Product Size Changeover
Quickly adapt the stroke window on a packaging line when transitioning between different carton lengths.
Variable End-Stop Assembly
Use the rear adjuster to fine-tune the pressing or clamping travel end for delicate components on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-20 the Right Cylinder?
Choose this 80 mm bore when a 50 mm bore (offering 982 N push at 0.5 MPa) is insufficient, but before stepping up to a 100 mm bore (3927 N push). The adjustable 240-260 mm window is ideal for commissioning fine-tuning or product changeover, allowing you to set variable end-stops without swapping the entire cylinder or adding external stops. To match this ISO 15552 interchangeable cylinder, specify the 260 mm stroke, 20 mm adjustment, PT tapered port threads, and no magnet (-S). Because the stroke is 260 mm, ensure external guidance is used if the load generates significant bending moments on the 25 mm 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 SAIJ80X260-20 FAQ
At 0.5 MPa, the 80 mm bore provides a push force of 2513 N and a pull force of 2268 N. At the maximum operating pressure of 1.0 MPa, it achieves a push force of 5026 N.
The rear adjusting screw acts as a mechanical stopper that shortens the effective travel from the 260 mm nominal stroke, creating a 240-260 mm usable window. It sets the travel end but does not lock the load without live air pressure.
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