Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-20 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 SAIJ80AX260-20
The AirTAC SAIJ80X260-20 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 2513N of push force at 0.5MPa and features a 260mm nominal stroke that can be fine-tuned down by up to 20mm, creating a precise 240-260mm usable travel window. This allows you to dial in the exact retract end position during commissioning without swapping out the cylinder or adding external stops.
This configuration utilizes a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and PT tapered port threads on its G3/8 ports. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic switches if a magnet is added later. The rear screw acts purely as a travel stop to set deceleration alongside the standard air cushions, so it will not hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-20 |
|---|---|
| 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 SAIJ80AX260-20
| 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 SAIJ80AX260-20 Is Used
Product Changeover
Quickly adjust the 240-260mm travel window on packaging lines to accommodate different carton sizes without changing the cylinder.
End-Position Tuning
Fine-tune the retract stop during machine commissioning to achieve exact seating forces without machining external spacers.
Variable End Stops
Ideal for automated assembly stations where the rear stopper must be tweaked periodically to handle varying part dimensions.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-20 the Right Cylinder?
Select this 80mm bore when a 50mm bore (982N push at 0.5MPa) is insufficient but you want to avoid stepping up to a 100mm bore (3927N). The adjustable 240-260mm travel window is ideal for machine setups requiring product changeovers or variable end-stops, offering more setup flexibility than a fixed-stroke SAI cylinder. To match this ISO 15552 replacement exactly, specify bore 80, stroke 260, adjust 20, PT port thread, and your required mounting bracket from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2).
Because the 260mm stroke is substantial, the 25mm rod should still be guided externally to prevent excessive side-loading. Remember that the rear adjuster is a stop, not a lock; for load-holding without live air, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ80AX260-20 FAQ
At 0.5MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. It can reach up to 4523N push force at 0.9MPa.
The rear adjuster screw allows you to shorten the 260mm nominal stroke by up to 20mm, providing a usable travel window of 240-260mm. It acts as a mechanical stop to set the end position and does not lock the load without air pressure.
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