Airtac SAIJ80 Adjustable Cylinder SAIJ80X270-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X270-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 270mm 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
- Stroke270 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X270-75
The AirTAC SAIJ80X270-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. It features a carbon steel piston rod and PT tapered port threads. By turning the rear stopper screw, you can trim the effective travel back by up to 75 mm, creating a precise 195-270 mm usable stroke window for exact end-position tuning.
This 80 mm bore actuator uses a 25 mm rod and M20x1.5 rod thread to handle high side loads, while the extruded aluminum barrel includes sensor grooves on both sides. The adjustment mechanism acts purely as a travel stop combined with variable air cushions at both ends to decelerate the load; it does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X270-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X270-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 270 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 SAIJ80X270-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×270 | 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 SAIJ80X270-75 Is Used
Machine Changeover
Dial in the 195-270 mm travel window during product size changes without physically swapping the actuator or repositioning hard stops.
Variable End Stops
Ideal for diverter gates on conveyors where the exact retract position must be tweaked on the fly to accommodate different package sizes.
Assembly Calibration
Fine-tune the clamping reach on automated assembly lines during initial commissioning to ensure perfect part contact.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X270-75 the Right Cylinder?
Choose this adjustable-stroke model when your setup requires fine-tuning the retract end-position during commissioning or product changeovers, avoiding the need to swap cylinders or bolt on external stops. If your application needs less force, stepping down to a 63 mm bore yields 1559N at 0.5 MPa, whereas moving up to a 100 mm bore provides 3927N. Because the nominal stroke is 270 mm, an external guide is recommended to support the rod and prevent excessive side-loading over this extended travel.
To match this ISO 15552 dimensionally interchangeable cylinder, confirm the 80 mm bore, 270 mm stroke, 75 mm adjustment range, PT G3/8 port, and mounting style. SAIJ supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. As no magnet is specified, it will not work with CMSE or DMSE sensors unless a -S variant is chosen.
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 SAIJ80X270-75 FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the nominal 270 mm stroke by up to 75 mm. This provides a usable travel window of 195-270 mm, enabling precise end-position tuning at commissioning without changing the cylinder.
At 0.5 MPa operating pressure, the SAIJ80X270-75 provides 2513N of push force and 2268N of pull force. The maximum push force reaches 4523N at 0.9 MPa.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80X270-75
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.