Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-40S 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 SAIJ80AX260-40S
The AirTAC SAIJ80X260-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 2513N of push force at 0.5 MPa and features a 25mm SUS420J2 stainless steel rod with PT tapered porting. Because this SKU carries the -40 adjustment code, its external rear stopper lets you dial back the nominal 260mm travel to any effective length within a 220-260mm window. This fine-tuning happens at commissioning without adding external stops or swapping the cylinder.
The extruded aluminum barrel includes sensor grooves on both sides, and the -S magnet supports position detection via AirTAC CMSE reed or DMSE electronic solid-state switches. The rear adjuster acts purely as a travel stop to set deceleration and end-position, not as a lock. For load-holding without live air pressure, you would need a SAIL or BSAI variant instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-40S |
|---|---|
| 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 SAIJ80AX260-40S
| 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 SAIJ80AX260-40S Is Used
Product Changeover
Dial in the 220-260mm travel window during format changes on a packaging line without physically replacing the cylinder.
End-Position Tuning
Fine-tune the retract end-stop during machine commissioning to perfect the resting position of a critical workpiece.
Variable Stops
Adjust the effective stroke on the fly for a conveyor diverter arm that must handle varying package dimensions.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX260-40S the Right Cylinder?
Choose this 80mm bore when a 50mm bore (982N push at 0.5MPa) is insufficient but a 100mm bore (3927N) is oversized. The 40mm adjustment range is selected over a fixed-stroke SAI when a machine requires variable end-stops for product changeovers. To match this ISO 15552 footprint exactly, specify: 80mm bore, 260mm stroke, 40mm adjust, PT ports, SUS420J2 (A) rod, and the -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB/CA/CB/CR).
Since the 260mm stroke is substantial, the 25mm rod and M20x1.5 thread handle good side loads, but an external guide is still recommended for long unsupported travel to prevent premature wear.
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 SAIJ80AX260-40S FAQ
At 0.5 MPa it provides 2513N of push force and 2268N of pull force. The maximum operating speed is 30-800 mm/s.
The rear adjusting screw acts as a mechanical stop, allowing you to shorten the 260mm nominal stroke by up to 40mm, yielding an effective travel window of 220-260mm. It sets the end position but does not lock the load without live air.
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