Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 145mm 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
- Stroke145 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-30S
The AirTAC SAIJ80X145-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 115-145 mm usable travel window by allowing you to trim up to 30 mm from the 145 mm nominal stroke without adding external stops. In the 80 mm bore class, it delivers 3518 N of push force and 2268 N of pull force at 0.7 MPa.
This model includes a standard magnet for position sensing, supporting AirTAC CMSE reed and DMSE electronic switches fitted into the dual-side sensor grooves on the extruded aluminum barrel. It uses a PT tapered port thread and features a 25 mm carbon steel piston rod with an M20x1.5 thread, providing robust resistance to side loading. The variable air cushions at both ends work alongside the rear adjuster to decelerate the load, though neither acts as a lock to hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 145 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 SAIJ80X145-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×145 | 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 SAIJ80X145-30S Is Used
End-Position Tuning
Dial in the exact retract distance within the 115-145 mm window during machine commissioning to perfect part ejection without swapping cylinders.
Product Changeover
Quickly adjust the stroke stop on the line when introducing a new product size, saving downtime on mechanical rebuilds.
Variable End Stops
Set precise physical travel limits for heavy clamping or press operations using the 3518 N thrust and rear stopper combination.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-30S the Right Cylinder?
Select this 80 mm bore model when your application requires substantial force and exact end-position tuning during commissioning or product changeovers. If your setup demands less thrust, stepping down to a 63 mm bore yields 2182 N of push force at 0.5 MPa; if you need more power, a 100 mm bore provides 5497 N at 0.7 MPa. Choose the SAIJ adjustable-stroke format over a fixed SAI cylinder when you need a variable end-stop to fine-tune travel rather than relying on a fixed stroke.
For drop-in replacements, match the 80 mm bore, 145 mm stroke, 30 mm adjustment, PT port, and the -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the rear adjuster is a travel stop and not a clamp, use an external rod lock or pilot-operated check valve for load-holding without live pressure, or explore the SAIL or BSAI series. For any stroke of 300 mm or more, always add an external guide to support long unsupported rods.
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 SAIJ80X145-30S FAQ
At 0.7 MPa operating pressure, this 80 mm bore cylinder provides 3518 N of push force and 2268 N of pull force. It can deliver up to 4523 N of push force at 0.9 MPa.
The rear adjuster screw allows you to shorten the 145 mm nominal stroke by up to 30 mm, creating a usable travel window of 115-145 mm. The adjuster acts as a physical stop to set the end position and does not lock the load without live air pressure.
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