Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-40 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 SAIJ80AX260-40
The AirTAC SAIJ80X260-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 40 mm. This creates a usable stroke window of 220-260 mm, giving you precise end-position tuning at commissioning without needing to swap the cylinder or bolt on external stops. In the 80 mm bore class, it delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa.
This model uses a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance and features a PT tapered G3/8 port. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU is configured without a magnet for position sensing. The rear adjuster acts purely as a travel stop to set the retract end position and decelerate the load alongside the standard air cushions; it is not a lock and will not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-40 |
|---|---|
| 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 SAIJ80AX260-40
| 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 SAIJ80AX260-40 Is Used
Machine Changeover
Dial in the 220-260 mm travel window during product size changes without physically replacing the actuator or adding external stopper blocks.
End-Position Tuning
Fine-tune the retract stroke by up to 40 mm at commissioning to perfectly time the machine sequence and absorb mechanical drift.
Assembly Fixtures
Leverage the 2513 N push force and SUS420J2 stainless rod for robust, precise clamping on automated machining lines.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-40 the Right Cylinder?
Choose this 80 mm bore if your application requires around 2513 N of thrust at 0.5 MPa, or step down to a 63 mm bore (providing 1559 N) if your force requirements are lower. The adjustable stroke is ideal for machine setups requiring variable end-stops or product changeovers, whereas a fixed SAI cylinder is sufficient if the travel distance never changes. Because this is a plain SAIJ without a locking mechanism, use a SAIL or BSAI cylinder if you need fail-safe load holding without continuous air pressure.
For ISO 15552 replacement matching, ensure your setup accommodates a 260 mm stroke with a 40 mm adjustment range, a PT G3/8 port, and the SUS420J2 stainless steel rod. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR brackets. With a 25 mm rod diameter and M20x1.5 thread, this cylinder handles side loads well, but any stroke of 260 mm should still be guided externally to prevent rod binding.
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 SAIJ80AX260-40 FAQ
At 0.5 MPa operating pressure, the 80 mm bore generates 2513 N of push force and 2268 N of pull force. It can reach up to 4523 N of push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that shortens the 260 mm nominal stroke by up to 40 mm, providing a usable travel window of 220-260 mm. It sets the end position but does not lock the load without live air pressure.
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