Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-40 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 SAIJ80X260-40
The AirTAC SAIJ80X260-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. By turning the external stopper screw, you can trim the nominal 260mm travel back by up to 40mm, creating a precise 220-260mm usable positioning window. This allows you to dial in the exact retract end-position during commissioning without swapping out the actuator or adding external stops.
The bore utilizes a G3/8 port and a robust 25mm carbon steel rod with an M20x1.5 thread, providing excellent resistance against side loads. As an extruded aluminum profile cylinder, it features sensor grooves on both sides for CMSE or DMSE switches, though this specific SKU is configured without a magnet. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-40 |
|---|---|
| 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 SAIJ80X260-40
| 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 SAIJ80X260-40 Is Used
Product Changeover
Quickly modify the retract distance within the 220-260mm window to accommodate different product lengths on a packaging line without changing cylinders.
Commissioning Calibration
Fine-tune the exact end-stop position during machine setup to prevent crashes, using the rear screw rather than adding external mechanical stops.
Variable End Positioning
Dial in the precise retract distance for material handling equipment, taking advantage of the 2513N thrust to push varying loads to adjusted endpoints.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-40 the Right Cylinder?
Choose this 80mm bore when you need higher thrust than a 63mm cylinder (which provides 1559N push at 0.5 MPa) but want to avoid the bulk of a 100mm unit. The adjustable stroke is ideal for machine setups requiring product-size changeovers, letting you set variable end-stops on the fly. Because the 260mm stroke exceeds 300mm is false, but for any long-stroke setup, ensuring an external guide supports the load is still best practice to protect the rod seals.
When specifying a replacement, verify the 260mm stroke, 40mm adjustment range, PT tapered port threads, and the correct mounting bracket. Remember that the rear adjuster acts only as a travel stop, not a lock; the SAIJ cannot hold a load without live air pressure. For true load-holding, consider the SAIL or BSAI series instead.
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 SAIJ80X260-40 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The rear adjuster screw allows you to shorten the effective stroke by up to 40mm from the nominal 260mm, providing a usable travel window of 220-260mm. It functions as a mechanical stop and does not lock the load without continuous air pressure.
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